/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -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-c90d42b [2020-09-24 14:57:28,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:57:28,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:57:28,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:57:28,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:57:28,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:57:28,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:57:28,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:57:28,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:57:28,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:57:28,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:57:28,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:57:28,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:57:28,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:57:28,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:57:28,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:57:28,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:57:28,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:57:28,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:57:28,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:57:28,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:57:28,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:57:28,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:57:28,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:57:28,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:57:28,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:57:28,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:57:28,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:57:28,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:57:28,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:57:28,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:57:28,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:57:28,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:57:28,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:57:28,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:57:28,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:57:28,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:57:28,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:57:28,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:57:28,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:57:28,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:57:28,131 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 [2020-09-24 14:57:28,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:57:28,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:57:28,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:57:28,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:57:28,161 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:57:28,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:57:28,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:57:28,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:57:28,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:57:28,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:57:28,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:57:28,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:57:28,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:57:28,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:57:28,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:57:28,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:57:28,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:57:28,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:57:28,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:57:28,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:57:28,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:57:28,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:57:28,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:57:28,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:57:28,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:57:28,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:57:28,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:57:28,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:57:28,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:57:28,166 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:57:28,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:57:28,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:57:28,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:57:28,681 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:57:28,682 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:57:28,683 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-24 14:57:28,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b131753b5/fd17a2fa9f7c42068b81ca089dfc8fbc/FLAG618634779 [2020-09-24 14:57:29,395 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:57:29,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-24 14:57:29,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b131753b5/fd17a2fa9f7c42068b81ca089dfc8fbc/FLAG618634779 [2020-09-24 14:57:29,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b131753b5/fd17a2fa9f7c42068b81ca089dfc8fbc [2020-09-24 14:57:29,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:57:29,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:57:29,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:29,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:57:29,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:57:29,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:29" (1/1) ... [2020-09-24 14:57:29,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b599924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:29, skipping insertion in model container [2020-09-24 14:57:29,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:29" (1/1) ... [2020-09-24 14:57:29,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:57:29,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:57:30,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:30,206 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:57:30,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:30,448 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:57:30,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30 WrapperNode [2020-09-24 14:57:30,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:30,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:57:30,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:57:30,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:57:30,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (1/1) ... [2020-09-24 14:57:30,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:57:30,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:57:30,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:57:30,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:57:30,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (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 [2020-09-24 14:57:30,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:57:30,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:57:30,608 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-09-24 14:57:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-09-24 14:57:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-09-24 14:57:30,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:57:30,610 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-09-24 14:57:30,611 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-09-24 14:57:30,611 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-09-24 14:57:30,611 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-09-24 14:57:30,612 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-09-24 14:57:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-09-24 14:57:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-09-24 14:57:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-09-24 14:57:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-09-24 14:57:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-09-24 14:57:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-09-24 14:57:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-09-24 14:57:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:57:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 14:57:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:57:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 14:57:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-09-24 14:57:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-09-24 14:57:30,616 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-09-24 14:57:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-09-24 14:57:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-09-24 14:57:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-09-24 14:57:30,617 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-09-24 14:57:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-09-24 14:57:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-09-24 14:57:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-09-24 14:57:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-09-24 14:57:30,618 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-09-24 14:57:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-09-24 14:57:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-09-24 14:57:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:57:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-09-24 14:57:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:57:30,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:57:30,936 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:31,030 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-09-24 14:57:31,031 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-09-24 14:57:31,066 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:31,224 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-09-24 14:57:31,225 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-09-24 14:57:31,227 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:31,310 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-24 14:57:31,311 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-24 14:57:31,320 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:31,372 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-24 14:57:31,373 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-24 14:57:31,537 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:31,565 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-09-24 14:57:31,566 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-09-24 14:57:31,612 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 14:57:31,756 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-09-24 14:57:31,757 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-09-24 14:57:31,783 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:57:31,783 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 14:57:31,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:31 BoogieIcfgContainer [2020-09-24 14:57:31,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:57:31,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:57:31,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:57:31,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:57:31,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:29" (1/3) ... [2020-09-24 14:57:31,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad9c678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:31, skipping insertion in model container [2020-09-24 14:57:31,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:30" (2/3) ... [2020-09-24 14:57:31,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad9c678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:31, skipping insertion in model container [2020-09-24 14:57:31,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:31" (3/3) ... [2020-09-24 14:57:31,804 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-09-24 14:57:31,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:57:31,830 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:57:31,855 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:57:31,891 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:57:31,892 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:57:31,892 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:57:31,892 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:57:31,892 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:57:31,892 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:57:31,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:57:31,893 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:57:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states. [2020-09-24 14:57:31,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 14:57:31,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:31,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:31,947 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:31,958 INFO L82 PathProgramCache]: Analyzing trace with hash 738723625, now seen corresponding path program 1 times [2020-09-24 14:57:31,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:31,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919300899] [2020-09-24 14:57:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:32,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:57:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:32,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919300899] [2020-09-24 14:57:32,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:32,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:57:32,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209587144] [2020-09-24 14:57:32,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:57:32,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:32,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:57:32,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:57:32,505 INFO L87 Difference]: Start difference. First operand 667 states. Second operand 5 states. [2020-09-24 14:57:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:34,561 INFO L93 Difference]: Finished difference Result 1037 states and 1248 transitions. [2020-09-24 14:57:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 14:57:34,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-24 14:57:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:34,590 INFO L225 Difference]: With dead ends: 1037 [2020-09-24 14:57:34,590 INFO L226 Difference]: Without dead ends: 709 [2020-09-24 14:57:34,600 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 [2020-09-24 14:57:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-09-24 14:57:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 655. [2020-09-24 14:57:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-09-24 14:57:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 750 transitions. [2020-09-24 14:57:34,719 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 750 transitions. Word has length 85 [2020-09-24 14:57:34,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:34,720 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 750 transitions. [2020-09-24 14:57:34,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:57:34,721 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 750 transitions. [2020-09-24 14:57:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 14:57:34,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:34,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:34,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:57:34,727 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:34,727 INFO L82 PathProgramCache]: Analyzing trace with hash -242240865, now seen corresponding path program 1 times [2020-09-24 14:57:34,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:34,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799242660] [2020-09-24 14:57:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:57:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:57:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:35,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799242660] [2020-09-24 14:57:35,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:35,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:57:35,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260171945] [2020-09-24 14:57:35,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:57:35,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:35,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:57:35,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:57:35,236 INFO L87 Difference]: Start difference. First operand 655 states and 750 transitions. Second operand 6 states. [2020-09-24 14:57:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:37,320 INFO L93 Difference]: Finished difference Result 976 states and 1131 transitions. [2020-09-24 14:57:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 14:57:37,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-24 14:57:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:37,328 INFO L225 Difference]: With dead ends: 976 [2020-09-24 14:57:37,328 INFO L226 Difference]: Without dead ends: 885 [2020-09-24 14:57:37,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:57:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-09-24 14:57:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 806. [2020-09-24 14:57:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-24 14:57:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 917 transitions. [2020-09-24 14:57:37,405 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 917 transitions. Word has length 136 [2020-09-24 14:57:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:37,406 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 917 transitions. [2020-09-24 14:57:37,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:57:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 917 transitions. [2020-09-24 14:57:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 14:57:37,422 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:37,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:37,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:57:37,425 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:37,426 INFO L82 PathProgramCache]: Analyzing trace with hash 864276638, now seen corresponding path program 1 times [2020-09-24 14:57:37,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:37,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323705796] [2020-09-24 14:57:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:57:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:57:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:37,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323705796] [2020-09-24 14:57:37,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:37,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:57:37,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014797981] [2020-09-24 14:57:37,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:57:37,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:37,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:57:37,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:57:37,778 INFO L87 Difference]: Start difference. First operand 806 states and 917 transitions. Second operand 6 states. [2020-09-24 14:57:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:39,366 INFO L93 Difference]: Finished difference Result 1133 states and 1293 transitions. [2020-09-24 14:57:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 14:57:39,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-24 14:57:39,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:39,374 INFO L225 Difference]: With dead ends: 1133 [2020-09-24 14:57:39,375 INFO L226 Difference]: Without dead ends: 907 [2020-09-24 14:57:39,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-24 14:57:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-09-24 14:57:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 881. [2020-09-24 14:57:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-24 14:57:39,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1003 transitions. [2020-09-24 14:57:39,442 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1003 transitions. Word has length 158 [2020-09-24 14:57:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:39,445 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1003 transitions. [2020-09-24 14:57:39,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:57:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1003 transitions. [2020-09-24 14:57:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 14:57:39,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:39,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:39,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:57:39,451 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:39,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:39,452 INFO L82 PathProgramCache]: Analyzing trace with hash 153469469, now seen corresponding path program 1 times [2020-09-24 14:57:39,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:39,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076883558] [2020-09-24 14:57:39,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:57:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:57:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:39,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076883558] [2020-09-24 14:57:39,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:39,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:57:39,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984800758] [2020-09-24 14:57:39,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:57:39,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:39,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:57:39,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:57:39,714 INFO L87 Difference]: Start difference. First operand 881 states and 1003 transitions. Second operand 6 states. [2020-09-24 14:57:41,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:41,468 INFO L93 Difference]: Finished difference Result 885 states and 1006 transitions. [2020-09-24 14:57:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 14:57:41,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-24 14:57:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:41,476 INFO L225 Difference]: With dead ends: 885 [2020-09-24 14:57:41,476 INFO L226 Difference]: Without dead ends: 881 [2020-09-24 14:57:41,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:57:41,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-09-24 14:57:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 880. [2020-09-24 14:57:41,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-24 14:57:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1000 transitions. [2020-09-24 14:57:41,515 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1000 transitions. Word has length 162 [2020-09-24 14:57:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:41,516 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1000 transitions. [2020-09-24 14:57:41,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:57:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1000 transitions. [2020-09-24 14:57:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 14:57:41,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:41,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:41,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:57:41,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:41,521 INFO L82 PathProgramCache]: Analyzing trace with hash 198218449, now seen corresponding path program 1 times [2020-09-24 14:57:41,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:41,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067396895] [2020-09-24 14:57:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:57:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:57:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 14:57:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 14:57:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 14:57:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:41,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067396895] [2020-09-24 14:57:41,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:41,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 14:57:41,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029107727] [2020-09-24 14:57:41,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:57:41,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:41,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:57:41,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:57:41,943 INFO L87 Difference]: Start difference. First operand 880 states and 1000 transitions. Second operand 8 states. [2020-09-24 14:57:43,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:43,941 INFO L93 Difference]: Finished difference Result 892 states and 1015 transitions. [2020-09-24 14:57:43,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 14:57:43,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-09-24 14:57:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:43,948 INFO L225 Difference]: With dead ends: 892 [2020-09-24 14:57:43,948 INFO L226 Difference]: Without dead ends: 876 [2020-09-24 14:57:43,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:57:43,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-09-24 14:57:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 821. [2020-09-24 14:57:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-09-24 14:57:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 936 transitions. [2020-09-24 14:57:44,010 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 936 transitions. Word has length 192 [2020-09-24 14:57:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:44,011 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 936 transitions. [2020-09-24 14:57:44,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:57:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 936 transitions. [2020-09-24 14:57:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 14:57:44,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:44,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:44,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:57:44,019 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:44,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1857862353, now seen corresponding path program 1 times [2020-09-24 14:57:44,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:44,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876014524] [2020-09-24 14:57:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:57:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:57:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 14:57:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 14:57:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 14:57:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:44,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876014524] [2020-09-24 14:57:44,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:44,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:57:44,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585992434] [2020-09-24 14:57:44,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:57:44,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:44,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:57:44,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:57:44,520 INFO L87 Difference]: Start difference. First operand 821 states and 936 transitions. Second operand 11 states. [2020-09-24 14:57:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:47,705 INFO L93 Difference]: Finished difference Result 944 states and 1075 transitions. [2020-09-24 14:57:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:57:47,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2020-09-24 14:57:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:47,718 INFO L225 Difference]: With dead ends: 944 [2020-09-24 14:57:47,718 INFO L226 Difference]: Without dead ends: 938 [2020-09-24 14:57:47,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-09-24 14:57:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-09-24 14:57:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 880. [2020-09-24 14:57:47,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-24 14:57:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 997 transitions. [2020-09-24 14:57:47,761 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 997 transitions. Word has length 193 [2020-09-24 14:57:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:47,762 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 997 transitions. [2020-09-24 14:57:47,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:57:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 997 transitions. [2020-09-24 14:57:47,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 14:57:47,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:47,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:47,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:57:47,767 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:47,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1657532014, now seen corresponding path program 1 times [2020-09-24 14:57:47,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:47,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618302580] [2020-09-24 14:57:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:47,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:47,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:57:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:47,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:57:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:48,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 14:57:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:48,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 14:57:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:48,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 14:57:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:48,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618302580] [2020-09-24 14:57:48,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:48,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 14:57:48,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273982791] [2020-09-24 14:57:48,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 14:57:48,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:48,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 14:57:48,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-24 14:57:48,317 INFO L87 Difference]: Start difference. First operand 880 states and 997 transitions. Second operand 15 states. [2020-09-24 14:57:49,304 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-09-24 14:57:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:51,615 INFO L93 Difference]: Finished difference Result 1002 states and 1127 transitions. [2020-09-24 14:57:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 14:57:51,615 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 194 [2020-09-24 14:57:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:51,622 INFO L225 Difference]: With dead ends: 1002 [2020-09-24 14:57:51,622 INFO L226 Difference]: Without dead ends: 928 [2020-09-24 14:57:51,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 14:57:51,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-09-24 14:57:51,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 823. [2020-09-24 14:57:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-09-24 14:57:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 931 transitions. [2020-09-24 14:57:51,675 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 931 transitions. Word has length 194 [2020-09-24 14:57:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:51,675 INFO L479 AbstractCegarLoop]: Abstraction has 823 states and 931 transitions. [2020-09-24 14:57:51,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 14:57:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 931 transitions. [2020-09-24 14:57:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 14:57:51,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:51,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:51,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:57:51,679 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:51,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:51,680 INFO L82 PathProgramCache]: Analyzing trace with hash -132300136, now seen corresponding path program 1 times [2020-09-24 14:57:51,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:51,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517040682] [2020-09-24 14:57:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:57:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:51,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:57:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 14:57:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:52,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 14:57:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 14:57:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:52,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517040682] [2020-09-24 14:57:52,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:52,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 14:57:52,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028120582] [2020-09-24 14:57:52,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 14:57:52,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:52,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 14:57:52,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:57:52,274 INFO L87 Difference]: Start difference. First operand 823 states and 931 transitions. Second operand 17 states. [2020-09-24 14:57:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:57,022 INFO L93 Difference]: Finished difference Result 845 states and 955 transitions. [2020-09-24 14:57:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 14:57:57,022 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 195 [2020-09-24 14:57:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:57,027 INFO L225 Difference]: With dead ends: 845 [2020-09-24 14:57:57,027 INFO L226 Difference]: Without dead ends: 828 [2020-09-24 14:57:57,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-09-24 14:57:57,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-24 14:57:57,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 819. [2020-09-24 14:57:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-09-24 14:57:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 925 transitions. [2020-09-24 14:57:57,064 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 925 transitions. Word has length 195 [2020-09-24 14:57:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:57,065 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 925 transitions. [2020-09-24 14:57:57,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 14:57:57,065 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 925 transitions. [2020-09-24 14:57:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 14:57:57,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:57,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:57,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:57:57,070 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash -853263794, now seen corresponding path program 1 times [2020-09-24 14:57:57,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:57,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283013940] [2020-09-24 14:57:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:57:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:57:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 14:57:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 14:57:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 14:57:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:57,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283013940] [2020-09-24 14:57:57,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 14:57:57,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143489321] [2020-09-24 14:57:57,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 14:57:57,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 14:57:57,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:57:57,640 INFO L87 Difference]: Start difference. First operand 819 states and 925 transitions. Second operand 17 states. [2020-09-24 14:58:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:02,466 INFO L93 Difference]: Finished difference Result 841 states and 949 transitions. [2020-09-24 14:58:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 14:58:02,467 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 190 [2020-09-24 14:58:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:02,472 INFO L225 Difference]: With dead ends: 841 [2020-09-24 14:58:02,473 INFO L226 Difference]: Without dead ends: 798 [2020-09-24 14:58:02,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-09-24 14:58:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2020-09-24 14:58:02,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 789. [2020-09-24 14:58:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-09-24 14:58:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 890 transitions. [2020-09-24 14:58:02,508 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 890 transitions. Word has length 190 [2020-09-24 14:58:02,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:02,509 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 890 transitions. [2020-09-24 14:58:02,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 14:58:02,509 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 890 transitions. [2020-09-24 14:58:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 14:58:02,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:02,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:02,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:58:02,513 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:02,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:02,514 INFO L82 PathProgramCache]: Analyzing trace with hash -443732248, now seen corresponding path program 1 times [2020-09-24 14:58:02,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:02,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328239021] [2020-09-24 14:58:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:02,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:58:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:58:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 14:58:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:02,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-24 14:58:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:02,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328239021] [2020-09-24 14:58:02,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:02,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 14:58:02,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612145220] [2020-09-24 14:58:02,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 14:58:02,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:02,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 14:58:02,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-24 14:58:02,924 INFO L87 Difference]: Start difference. First operand 789 states and 890 transitions. Second operand 13 states. [2020-09-24 14:58:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:06,509 INFO L93 Difference]: Finished difference Result 811 states and 914 transitions. [2020-09-24 14:58:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:58:06,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 193 [2020-09-24 14:58:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:06,514 INFO L225 Difference]: With dead ends: 811 [2020-09-24 14:58:06,514 INFO L226 Difference]: Without dead ends: 714 [2020-09-24 14:58:06,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:58:06,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-09-24 14:58:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 705. [2020-09-24 14:58:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-09-24 14:58:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 796 transitions. [2020-09-24 14:58:06,542 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 796 transitions. Word has length 193 [2020-09-24 14:58:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:06,542 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 796 transitions. [2020-09-24 14:58:06,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 14:58:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 796 transitions. [2020-09-24 14:58:06,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 14:58:06,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:06,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:06,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:58:06,546 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:06,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:06,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1742770590, now seen corresponding path program 1 times [2020-09-24 14:58:06,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:06,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076409813] [2020-09-24 14:58:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:06,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:06,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:58:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:58:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:06,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 14:58:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:06,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076409813] [2020-09-24 14:58:06,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:06,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 14:58:06,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35053254] [2020-09-24 14:58:06,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:58:06,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:06,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:58:06,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:58:06,835 INFO L87 Difference]: Start difference. First operand 705 states and 796 transitions. Second operand 8 states. [2020-09-24 14:58:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:08,427 INFO L93 Difference]: Finished difference Result 760 states and 853 transitions. [2020-09-24 14:58:08,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 14:58:08,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-09-24 14:58:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:08,432 INFO L225 Difference]: With dead ends: 760 [2020-09-24 14:58:08,432 INFO L226 Difference]: Without dead ends: 652 [2020-09-24 14:58:08,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 14:58:08,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-09-24 14:58:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 624. [2020-09-24 14:58:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-09-24 14:58:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 698 transitions. [2020-09-24 14:58:08,457 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 698 transitions. Word has length 197 [2020-09-24 14:58:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:08,458 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 698 transitions. [2020-09-24 14:58:08,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:58:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 698 transitions. [2020-09-24 14:58:08,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-24 14:58:08,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:08,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:08,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:58:08,461 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash -759676943, now seen corresponding path program 1 times [2020-09-24 14:58:08,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:08,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154551278] [2020-09-24 14:58:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:58:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:58:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:08,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 14:58:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:08,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:58:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:08,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154551278] [2020-09-24 14:58:08,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:08,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 14:58:08,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083818592] [2020-09-24 14:58:08,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:58:08,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:08,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:58:08,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:58:08,881 INFO L87 Difference]: Start difference. First operand 624 states and 698 transitions. Second operand 14 states. [2020-09-24 14:58:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:12,280 INFO L93 Difference]: Finished difference Result 652 states and 728 transitions. [2020-09-24 14:58:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:58:12,280 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-09-24 14:58:12,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:12,285 INFO L225 Difference]: With dead ends: 652 [2020-09-24 14:58:12,285 INFO L226 Difference]: Without dead ends: 620 [2020-09-24 14:58:12,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-09-24 14:58:12,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-09-24 14:58:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 611. [2020-09-24 14:58:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-24 14:58:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 683 transitions. [2020-09-24 14:58:12,311 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 683 transitions. Word has length 204 [2020-09-24 14:58:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:12,312 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 683 transitions. [2020-09-24 14:58:12,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 14:58:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 683 transitions. [2020-09-24 14:58:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 14:58:12,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:12,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:12,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 14:58:12,315 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:12,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:12,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1349540408, now seen corresponding path program 1 times [2020-09-24 14:58:12,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:12,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522871781] [2020-09-24 14:58:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:12,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:12,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:58:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:58:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:12,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 14:58:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 14:58:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:12,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522871781] [2020-09-24 14:58:12,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:12,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 14:58:12,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792583212] [2020-09-24 14:58:12,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 14:58:12,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:12,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 14:58:12,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-09-24 14:58:12,731 INFO L87 Difference]: Start difference. First operand 611 states and 683 transitions. Second operand 13 states. [2020-09-24 14:58:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:15,679 INFO L93 Difference]: Finished difference Result 932 states and 1052 transitions. [2020-09-24 14:58:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 14:58:15,680 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2020-09-24 14:58:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:15,684 INFO L225 Difference]: With dead ends: 932 [2020-09-24 14:58:15,684 INFO L226 Difference]: Without dead ends: 793 [2020-09-24 14:58:15,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-09-24 14:58:15,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-09-24 14:58:15,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 625. [2020-09-24 14:58:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-09-24 14:58:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 701 transitions. [2020-09-24 14:58:15,713 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 701 transitions. Word has length 205 [2020-09-24 14:58:15,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:15,714 INFO L479 AbstractCegarLoop]: Abstraction has 625 states and 701 transitions. [2020-09-24 14:58:15,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 14:58:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 701 transitions. [2020-09-24 14:58:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 14:58:15,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:15,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:15,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 14:58:15,717 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:15,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:15,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1202059503, now seen corresponding path program 1 times [2020-09-24 14:58:15,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:15,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655799328] [2020-09-24 14:58:15,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:15,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:15,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:58:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:15,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:58:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:15,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-24 14:58:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:16,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 14:58:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:16,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655799328] [2020-09-24 14:58:16,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:16,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 14:58:16,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732158283] [2020-09-24 14:58:16,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:58:16,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:16,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:58:16,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:58:16,094 INFO L87 Difference]: Start difference. First operand 625 states and 701 transitions. Second operand 14 states. [2020-09-24 14:58:18,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:18,591 INFO L93 Difference]: Finished difference Result 653 states and 731 transitions. [2020-09-24 14:58:18,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:58:18,592 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 205 [2020-09-24 14:58:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:18,596 INFO L225 Difference]: With dead ends: 653 [2020-09-24 14:58:18,596 INFO L226 Difference]: Without dead ends: 604 [2020-09-24 14:58:18,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-09-24 14:58:18,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-09-24 14:58:18,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 595. [2020-09-24 14:58:18,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-09-24 14:58:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 650 transitions. [2020-09-24 14:58:18,624 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 650 transitions. Word has length 205 [2020-09-24 14:58:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:18,624 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 650 transitions. [2020-09-24 14:58:18,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 14:58:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 650 transitions. [2020-09-24 14:58:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 14:58:18,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:18,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:18,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 14:58:18,627 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:18,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1820990330, now seen corresponding path program 1 times [2020-09-24 14:58:18,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:18,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987559327] [2020-09-24 14:58:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:18,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 14:58:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 14:58:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-24 14:58:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 14:58:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-24 14:58:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:18,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987559327] [2020-09-24 14:58:18,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:18,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 14:58:18,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75724327] [2020-09-24 14:58:18,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:58:18,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:18,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:58:18,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:58:18,899 INFO L87 Difference]: Start difference. First operand 595 states and 650 transitions. Second operand 8 states. [2020-09-24 14:58:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:19,936 INFO L93 Difference]: Finished difference Result 718 states and 790 transitions. [2020-09-24 14:58:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 14:58:19,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-24 14:58:19,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:19,940 INFO L225 Difference]: With dead ends: 718 [2020-09-24 14:58:19,941 INFO L226 Difference]: Without dead ends: 622 [2020-09-24 14:58:19,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:58:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-09-24 14:58:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 591. [2020-09-24 14:58:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-24 14:58:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 643 transitions. [2020-09-24 14:58:19,967 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 643 transitions. Word has length 213 [2020-09-24 14:58:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:19,967 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 643 transitions. [2020-09-24 14:58:19,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:58:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 643 transitions. [2020-09-24 14:58:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 14:58:19,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:19,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:19,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 14:58:19,970 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:19,971 INFO L82 PathProgramCache]: Analyzing trace with hash 468800160, now seen corresponding path program 1 times [2020-09-24 14:58:19,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:19,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025677341] [2020-09-24 14:58:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:58:20,021 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:58:20,021 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:58:20,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 14:58:20,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:58:20 BoogieIcfgContainer [2020-09-24 14:58:20,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:58:20,064 INFO L168 Benchmark]: Toolchain (without parser) took 50332.64 ms. Allocated memory was 145.8 MB in the beginning and 660.6 MB in the end (delta: 514.9 MB). Free memory was 99.1 MB in the beginning and 467.8 MB in the end (delta: -368.7 MB). Peak memory consumption was 146.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:20,065 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:58:20,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.08 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 98.5 MB in the beginning and 174.5 MB in the end (delta: -76.0 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:20,067 INFO L168 Benchmark]: Boogie Preprocessor took 75.07 ms. Allocated memory is still 201.9 MB. Free memory was 174.5 MB in the beginning and 171.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:20,068 INFO L168 Benchmark]: RCFGBuilder took 1269.22 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 171.1 MB in the beginning and 186.7 MB in the end (delta: -15.6 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:20,068 INFO L168 Benchmark]: TraceAbstraction took 48267.03 ms. Allocated memory was 232.8 MB in the beginning and 660.6 MB in the end (delta: 427.8 MB). Free memory was 186.7 MB in the beginning and 467.8 MB in the end (delta: -281.2 MB). Peak memory consumption was 146.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:20,072 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.08 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 98.5 MB in the beginning and 174.5 MB in the end (delta: -76.0 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.07 ms. Allocated memory is still 201.9 MB. Free memory was 174.5 MB in the beginning and 171.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1269.22 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 171.1 MB in the beginning and 186.7 MB in the end (delta: -15.6 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48267.03 ms. Allocated memory was 232.8 MB in the beginning and 660.6 MB in the end (delta: 427.8 MB). Free memory was 186.7 MB in the beginning and 467.8 MB in the end (delta: -281.2 MB). Peak memory consumption was 146.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; [L292] int status ; [L293] int irp = __VERIFIER_nondet_int() ; [L294] int pirp ; [L295] int pirp__IoStatus__Status ; [L296] int irp_choice = __VERIFIER_nondet_int() ; [L297] int devobj = __VERIFIER_nondet_int() ; [L298] int __cil_tmp8 ; [L300] KernelMode = 0 [L301] Executive = 0 [L302] DevicePowerState = 1 [L303] s = 0 [L304] UNLOADED = 0 [L305] NP = 0 [L306] DC = 0 [L307] SKIP1 = 0 [L308] SKIP2 = 0 [L309] MPR1 = 0 [L310] MPR3 = 0 [L311] IPC = 0 [L312] pended = 0 [L313] compFptr = 0 [L314] compRegistered = 0 [L315] lowerDriverReturn = 0 [L316] setEventCalled = 0 [L317] customIrp = 0 [L318] myStatus = 0 [L322] status = 0 [L323] pirp = irp [L324] CALL _BLAST_init() [L59] UNLOADED = 0 [L60] NP = 1 [L61] DC = 2 [L62] SKIP1 = 3 [L63] SKIP2 = 4 [L64] MPR1 = 5 [L65] MPR3 = 6 [L66] IPC = 7 [L67] s = UNLOADED [L68] pended = 0 [L69] compFptr = 0 [L70] compRegistered = 0 [L71] lowerDriverReturn = 0 [L72] setEventCalled = 0 [L73] customIrp = 0 [L324] RET _BLAST_init() [L326] COND TRUE status >= 0 [L327] s = NP [L328] customIrp = 0 [L329] setEventCalled = customIrp [L330] lowerDriverReturn = setEventCalled [L331] compRegistered = lowerDriverReturn [L332] pended = compRegistered [L333] pirp__IoStatus__Status = 0 [L334] myStatus = 0 [L335] COND FALSE !(irp_choice == 0) [L340] CALL stub_driver_init() [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 [L340] RET stub_driver_init() [L343] COND FALSE !(status < 0) [L347] int tmp_ndt_1; [L348] tmp_ndt_1 = __VERIFIER_nondet_int() [L349] COND FALSE !(tmp_ndt_1 == 0) [L352] int tmp_ndt_2; [L353] tmp_ndt_2 = __VERIFIER_nondet_int() [L354] COND FALSE !(tmp_ndt_2 == 1) [L357] int tmp_ndt_3; [L358] tmp_ndt_3 = __VERIFIER_nondet_int() [L359] COND TRUE tmp_ndt_3 == 3 [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) [L78] int devExt ; [L79] int irpStack ; [L80] int status ; [L81] int event = __VERIFIER_nondet_int() ; [L82] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L83] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L84] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L85] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L86] int devExt__Started ; [L87] int devExt__Removed ; [L88] int devExt__SurpriseRemoved ; [L89] int Irp__IoStatus__Status ; [L90] int Irp__IoStatus__Information ; [L91] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L92] int irpSp ; [L93] int nextIrpSp ; [L94] int nextIrpSp__Control ; [L95] int irpSp___0 ; [L96] int irpSp__Context ; [L97] int irpSp__Control ; [L98] long __cil_tmp23 ; [L101] status = 0 [L102] devExt = DeviceObject__DeviceExtension [L103] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L104] COND FALSE !(irpStack__MinorFunction == 0) [L107] COND FALSE !(irpStack__MinorFunction == 23) [L110] COND TRUE irpStack__MinorFunction == 2 [L234] devExt__Removed = 1 [L235] COND TRUE s == NP [L236] s = SKIP1 [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; [L487] COND FALSE !(\read(compRegistered)) [L500] int tmp_ndt_6; [L501] tmp_ndt_6 = __VERIFIER_nondet_int() [L502] COND FALSE !(tmp_ndt_6 == 0) [L505] int tmp_ndt_7; [L506] tmp_ndt_7 = __VERIFIER_nondet_int() [L507] COND TRUE tmp_ndt_7 == 1 [L516] returnVal2 = -1073741823 [L526] COND FALSE !(s == NP) [L530] COND FALSE !(s == MPR1) [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 [L549] return (returnVal2); [L245] RET IofCallDriver(devExt__TopOfStack, Irp) [L246] status = 0 [L288] return (status); [L386] RET, EXPR KbFilter_PnP(devobj, pirp) [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) [L418] COND FALSE !(pended == 1) [L426] COND TRUE s != UNLOADED [L427] COND TRUE status != -1 [L428] COND FALSE !(s != SKIP2) [L438] COND FALSE !(pended == 1) [L445] COND FALSE !(s == DC) [L450] COND TRUE status != lowerDriverReturn [L451] CALL errorFn() [L1011] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 667 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.1s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 40.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9634 SDtfs, 16554 SDslu, 18781 SDs, 0 SdLazy, 31793 SolverSat, 1310 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=881occurred 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: 0.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 650 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2932 NumberOfCodeBlocks, 2932 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2707 ConstructedInterpolants, 0 QuantifiedInterpolants, 1176389 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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...