/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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-d623d84 [2020-07-21 19:50:58,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:50:58,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:50:58,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:50:58,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:50:58,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:50:58,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:50:58,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:50:58,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:50:58,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:50:58,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:50:58,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:50:58,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:50:58,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:50:58,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:50:58,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:50:58,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:50:58,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:50:58,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:50:58,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:50:58,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:50:58,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:50:58,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:50:58,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:50:58,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 19:50:58,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 19:50:58,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 19:50:58,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 19:50:58,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 19:50:58,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 19:50:58,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 19:50:58,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 19:50:58,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 19:50:58,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 19:50:58,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 19:50:58,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 19:50:58,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 19:50:58,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 19:50:58,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:50:58,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:50:58,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:50:58,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 19:50:59,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:50:59,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:50:59,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:50:59,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:50:59,047 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:50:59,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:50:59,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:50:59,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:50:59,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:50:59,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:50:59,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:50:59,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:50:59,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:50:59,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:50:59,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:50:59,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:50:59,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:50:59,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:50:59,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:50:59,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:50:59,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:50:59,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:50:59,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:50:59,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:50:59,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:50:59,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:50:59,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:50:59,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:50:59,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:50:59,054 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 19:50:59,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:50:59,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:50:59,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:50:59,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:50:59,402 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:50:59,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-21 19:50:59,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a51bb26b/9b02bca0efda424e90f10dbfb87f1106/FLAG0472af32a [2020-07-21 19:51:00,041 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:51:00,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-21 19:51:00,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a51bb26b/9b02bca0efda424e90f10dbfb87f1106/FLAG0472af32a [2020-07-21 19:51:00,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a51bb26b/9b02bca0efda424e90f10dbfb87f1106 [2020-07-21 19:51:00,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:51:00,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:51:00,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:51:00,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:51:00,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:51:00,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:51:00" (1/1) ... [2020-07-21 19:51:00,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55fc409a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00, skipping insertion in model container [2020-07-21 19:51:00,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:51:00" (1/1) ... [2020-07-21 19:51:00,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:51:00,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:51:00,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:51:00,807 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:51:00,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:51:00,993 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:51:00,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00 WrapperNode [2020-07-21 19:51:00,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:51:00,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:51:00,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:51:00,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:51:01,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00" (1/1) ... [2020-07-21 19:51:01,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00" (1/1) ... [2020-07-21 19:51:01,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00" (1/1) ... [2020-07-21 19:51:01,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00" (1/1) ... [2020-07-21 19:51:01,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00" (1/1) ... [2020-07-21 19:51:01,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00" (1/1) ... [2020-07-21 19:51:01,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00" (1/1) ... [2020-07-21 19:51:01,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:51:01,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:51:01,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:51:01,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:51:01,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:51:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:51:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:51:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-07-21 19:51:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-07-21 19:51:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-07-21 19:51:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:51:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-07-21 19:51:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-07-21 19:51:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-07-21 19:51:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-07-21 19:51:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-07-21 19:51:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-07-21 19:51:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-07-21 19:51:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-07-21 19:51:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-07-21 19:51:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-07-21 19:51:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-07-21 19:51:01,128 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-07-21 19:51:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:51:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 19:51:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 19:51:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-21 19:51:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-07-21 19:51:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-07-21 19:51:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-07-21 19:51:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-07-21 19:51:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-07-21 19:51:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-07-21 19:51:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-07-21 19:51:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-07-21 19:51:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-07-21 19:51:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-07-21 19:51:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-07-21 19:51:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-07-21 19:51:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-07-21 19:51:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-07-21 19:51:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:51:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-07-21 19:51:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:51:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:51:01,365 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 19:51:01,430 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-07-21 19:51:01,430 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-07-21 19:51:01,457 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 19:51:01,662 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-07-21 19:51:01,663 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-07-21 19:51:01,673 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 19:51:01,747 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-21 19:51:01,747 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-21 19:51:01,757 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 19:51:01,819 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-21 19:51:01,820 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-21 19:51:01,931 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 19:51:01,956 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-07-21 19:51:01,957 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-07-21 19:51:01,990 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 19:51:02,110 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-07-21 19:51:02,110 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-07-21 19:51:02,132 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:51:02,133 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 19:51:02,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:51:02 BoogieIcfgContainer [2020-07-21 19:51:02,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:51:02,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:51:02,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:51:02,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:51:02,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:51:00" (1/3) ... [2020-07-21 19:51:02,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:51:02, skipping insertion in model container [2020-07-21 19:51:02,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:51:00" (2/3) ... [2020-07-21 19:51:02,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:51:02, skipping insertion in model container [2020-07-21 19:51:02,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:51:02" (3/3) ... [2020-07-21 19:51:02,152 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-07-21 19:51:02,167 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:51:02,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:51:02,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:51:02,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:51:02,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:51:02,233 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:51:02,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:51:02,234 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:51:02,234 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:51:02,234 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:51:02,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:51:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-07-21 19:51:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 19:51:02,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:02,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:02,280 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:02,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-07-21 19:51:02,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:02,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908525131] [2020-07-21 19:51:02,303 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:02,469 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:51:02,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:02,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 19:51:02,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:02,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:02,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908525131] [2020-07-21 19:51:02,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:02,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:51:02,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540863173] [2020-07-21 19:51:02,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:51:02,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:02,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:51:02,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:02,586 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 3 states. [2020-07-21 19:51:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:02,712 INFO L93 Difference]: Finished difference Result 390 states and 586 transitions. [2020-07-21 19:51:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:51:02,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-21 19:51:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:02,736 INFO L225 Difference]: With dead ends: 390 [2020-07-21 19:51:02,737 INFO L226 Difference]: Without dead ends: 231 [2020-07-21 19:51:02,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-07-21 19:51:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-07-21 19:51:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-21 19:51:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-07-21 19:51:02,845 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-07-21 19:51:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:02,846 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-07-21 19:51:02,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:51:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-07-21 19:51:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 19:51:02,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:02,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:03,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:03,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:03,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-07-21 19:51:03,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:03,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718177256] [2020-07-21 19:51:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:03,182 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:51:03,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:03,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 19:51:03,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:03,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:03,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718177256] [2020-07-21 19:51:03,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:03,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:51:03,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788833138] [2020-07-21 19:51:03,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:51:03,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:03,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:51:03,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:03,207 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 3 states. [2020-07-21 19:51:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:03,410 INFO L93 Difference]: Finished difference Result 375 states and 514 transitions. [2020-07-21 19:51:03,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:51:03,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-21 19:51:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:03,415 INFO L225 Difference]: With dead ends: 375 [2020-07-21 19:51:03,415 INFO L226 Difference]: Without dead ends: 314 [2020-07-21 19:51:03,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-21 19:51:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 298. [2020-07-21 19:51:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-07-21 19:51:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 408 transitions. [2020-07-21 19:51:03,453 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 408 transitions. Word has length 28 [2020-07-21 19:51:03,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:03,453 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 408 transitions. [2020-07-21 19:51:03,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:51:03,454 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 408 transitions. [2020-07-21 19:51:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 19:51:03,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:03,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:03,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:03,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:03,672 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-07-21 19:51:03,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:03,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878532469] [2020-07-21 19:51:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:03,819 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:51:03,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:03,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 19:51:03,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:03,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:03,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878532469] [2020-07-21 19:51:03,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:03,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:51:03,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602048446] [2020-07-21 19:51:03,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:51:03,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:03,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:51:03,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:03,862 INFO L87 Difference]: Start difference. First operand 298 states and 408 transitions. Second operand 3 states. [2020-07-21 19:51:03,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:03,944 INFO L93 Difference]: Finished difference Result 481 states and 640 transitions. [2020-07-21 19:51:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:51:03,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-21 19:51:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:03,955 INFO L225 Difference]: With dead ends: 481 [2020-07-21 19:51:03,956 INFO L226 Difference]: Without dead ends: 362 [2020-07-21 19:51:03,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-07-21 19:51:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 338. [2020-07-21 19:51:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-21 19:51:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 459 transitions. [2020-07-21 19:51:04,023 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 459 transitions. Word has length 28 [2020-07-21 19:51:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:04,024 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 459 transitions. [2020-07-21 19:51:04,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:51:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 459 transitions. [2020-07-21 19:51:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 19:51:04,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:04,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:04,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:04,248 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-07-21 19:51:04,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:04,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494980365] [2020-07-21 19:51:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:04,404 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:04,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:04,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 19:51:04,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:04,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:04,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494980365] [2020-07-21 19:51:04,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:04,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:51:04,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981793819] [2020-07-21 19:51:04,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:51:04,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:04,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:51:04,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:04,431 INFO L87 Difference]: Start difference. First operand 338 states and 459 transitions. Second operand 3 states. [2020-07-21 19:51:04,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:04,537 INFO L93 Difference]: Finished difference Result 341 states and 461 transitions. [2020-07-21 19:51:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:51:04,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-21 19:51:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:04,541 INFO L225 Difference]: With dead ends: 341 [2020-07-21 19:51:04,542 INFO L226 Difference]: Without dead ends: 337 [2020-07-21 19:51:04,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:04,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-21 19:51:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-07-21 19:51:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-21 19:51:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 456 transitions. [2020-07-21 19:51:04,564 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 456 transitions. Word has length 38 [2020-07-21 19:51:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:04,564 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 456 transitions. [2020-07-21 19:51:04,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:51:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 456 transitions. [2020-07-21 19:51:04,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 19:51:04,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:04,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:04,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:04,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:04,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:04,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-07-21 19:51:04,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:04,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788244086] [2020-07-21 19:51:04,785 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:04,946 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:04,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:04,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 19:51:04,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:05,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:05,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788244086] [2020-07-21 19:51:05,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:05,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 19:51:05,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147533849] [2020-07-21 19:51:05,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 19:51:05,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:05,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 19:51:05,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 19:51:05,009 INFO L87 Difference]: Start difference. First operand 337 states and 456 transitions. Second operand 5 states. [2020-07-21 19:51:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:05,380 INFO L93 Difference]: Finished difference Result 491 states and 654 transitions. [2020-07-21 19:51:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 19:51:05,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-07-21 19:51:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:05,385 INFO L225 Difference]: With dead ends: 491 [2020-07-21 19:51:05,385 INFO L226 Difference]: Without dead ends: 406 [2020-07-21 19:51:05,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 19:51:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-07-21 19:51:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 355. [2020-07-21 19:51:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-07-21 19:51:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 478 transitions. [2020-07-21 19:51:05,411 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 478 transitions. Word has length 46 [2020-07-21 19:51:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:05,411 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 478 transitions. [2020-07-21 19:51:05,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 19:51:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 478 transitions. [2020-07-21 19:51:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 19:51:05,415 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:05,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:05,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:05,630 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:05,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:05,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1876426227, now seen corresponding path program 1 times [2020-07-21 19:51:05,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:05,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736866092] [2020-07-21 19:51:05,633 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:05,758 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:05,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:05,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 19:51:05,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:05,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:05,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736866092] [2020-07-21 19:51:05,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:05,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:51:05,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664417011] [2020-07-21 19:51:05,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:51:05,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:05,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:51:05,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:05,785 INFO L87 Difference]: Start difference. First operand 355 states and 478 transitions. Second operand 3 states. [2020-07-21 19:51:05,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:05,814 INFO L93 Difference]: Finished difference Result 405 states and 534 transitions. [2020-07-21 19:51:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:51:05,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-21 19:51:05,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:05,818 INFO L225 Difference]: With dead ends: 405 [2020-07-21 19:51:05,819 INFO L226 Difference]: Without dead ends: 338 [2020-07-21 19:51:05,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:05,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-07-21 19:51:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 314. [2020-07-21 19:51:05,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-07-21 19:51:05,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 419 transitions. [2020-07-21 19:51:05,840 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 419 transitions. Word has length 46 [2020-07-21 19:51:05,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:05,840 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 419 transitions. [2020-07-21 19:51:05,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:51:05,840 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 419 transitions. [2020-07-21 19:51:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 19:51:05,842 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:05,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:06,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:06,057 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:06,057 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-07-21 19:51:06,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:06,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970166421] [2020-07-21 19:51:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:06,208 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:06,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:06,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 19:51:06,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:06,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:06,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970166421] [2020-07-21 19:51:06,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:06,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:51:06,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746363881] [2020-07-21 19:51:06,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:51:06,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:06,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:51:06,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:06,234 INFO L87 Difference]: Start difference. First operand 314 states and 419 transitions. Second operand 3 states. [2020-07-21 19:51:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:06,264 INFO L93 Difference]: Finished difference Result 326 states and 434 transitions. [2020-07-21 19:51:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:51:06,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-07-21 19:51:06,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:06,268 INFO L225 Difference]: With dead ends: 326 [2020-07-21 19:51:06,268 INFO L226 Difference]: Without dead ends: 310 [2020-07-21 19:51:06,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-07-21 19:51:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 280. [2020-07-21 19:51:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-07-21 19:51:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 377 transitions. [2020-07-21 19:51:06,286 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 377 transitions. Word has length 45 [2020-07-21 19:51:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:06,287 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 377 transitions. [2020-07-21 19:51:06,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:51:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 377 transitions. [2020-07-21 19:51:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 19:51:06,289 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:06,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:06,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:06,504 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:06,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:06,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-07-21 19:51:06,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:06,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614170987] [2020-07-21 19:51:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:06,630 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:06,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:06,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 19:51:06,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:06,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:06,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614170987] [2020-07-21 19:51:06,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:06,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:51:06,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593730733] [2020-07-21 19:51:06,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:51:06,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:06,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:51:06,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:06,657 INFO L87 Difference]: Start difference. First operand 280 states and 377 transitions. Second operand 3 states. [2020-07-21 19:51:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:06,745 INFO L93 Difference]: Finished difference Result 300 states and 398 transitions. [2020-07-21 19:51:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:51:06,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-21 19:51:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:06,748 INFO L225 Difference]: With dead ends: 300 [2020-07-21 19:51:06,749 INFO L226 Difference]: Without dead ends: 258 [2020-07-21 19:51:06,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-21 19:51:06,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-07-21 19:51:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-07-21 19:51:06,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 339 transitions. [2020-07-21 19:51:06,775 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 339 transitions. Word has length 46 [2020-07-21 19:51:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:06,776 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 339 transitions. [2020-07-21 19:51:06,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:51:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 339 transitions. [2020-07-21 19:51:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 19:51:06,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:06,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:06,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:06,993 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:06,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-07-21 19:51:06,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:06,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804253707] [2020-07-21 19:51:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:07,092 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:51:07,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:07,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 19:51:07,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:07,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:07,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804253707] [2020-07-21 19:51:07,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:07,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 19:51:07,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274523357] [2020-07-21 19:51:07,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 19:51:07,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:07,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 19:51:07,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:07,117 INFO L87 Difference]: Start difference. First operand 258 states and 339 transitions. Second operand 3 states. [2020-07-21 19:51:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:07,178 INFO L93 Difference]: Finished difference Result 286 states and 372 transitions. [2020-07-21 19:51:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 19:51:07,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-21 19:51:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:07,182 INFO L225 Difference]: With dead ends: 286 [2020-07-21 19:51:07,182 INFO L226 Difference]: Without dead ends: 256 [2020-07-21 19:51:07,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 19:51:07,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-21 19:51:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-07-21 19:51:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-21 19:51:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 335 transitions. [2020-07-21 19:51:07,206 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 335 transitions. Word has length 53 [2020-07-21 19:51:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:07,208 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 335 transitions. [2020-07-21 19:51:07,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 19:51:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 335 transitions. [2020-07-21 19:51:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 19:51:07,211 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:07,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:07,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:07,424 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:07,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:07,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-07-21 19:51:07,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:07,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665167550] [2020-07-21 19:51:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:07,518 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:51:07,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:07,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 19:51:07,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:07,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:07,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665167550] [2020-07-21 19:51:07,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:07,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 19:51:07,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460428002] [2020-07-21 19:51:07,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 19:51:07,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:07,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 19:51:07,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 19:51:07,618 INFO L87 Difference]: Start difference. First operand 256 states and 335 transitions. Second operand 6 states. [2020-07-21 19:51:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:07,987 INFO L93 Difference]: Finished difference Result 297 states and 381 transitions. [2020-07-21 19:51:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 19:51:07,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-21 19:51:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:07,991 INFO L225 Difference]: With dead ends: 297 [2020-07-21 19:51:07,991 INFO L226 Difference]: Without dead ends: 256 [2020-07-21 19:51:07,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 19:51:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-21 19:51:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-07-21 19:51:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-21 19:51:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 333 transitions. [2020-07-21 19:51:08,009 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 333 transitions. Word has length 51 [2020-07-21 19:51:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:08,009 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 333 transitions. [2020-07-21 19:51:08,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 19:51:08,009 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 333 transitions. [2020-07-21 19:51:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 19:51:08,011 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:08,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:08,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:08,219 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:08,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:08,219 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-07-21 19:51:08,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:08,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51315854] [2020-07-21 19:51:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:08,342 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:08,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:08,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 19:51:08,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:08,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:08,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51315854] [2020-07-21 19:51:08,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:08,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 19:51:08,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113758120] [2020-07-21 19:51:08,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 19:51:08,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:08,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 19:51:08,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-21 19:51:08,401 INFO L87 Difference]: Start difference. First operand 256 states and 333 transitions. Second operand 8 states. [2020-07-21 19:51:08,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:08,532 INFO L93 Difference]: Finished difference Result 268 states and 345 transitions. [2020-07-21 19:51:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 19:51:08,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-21 19:51:08,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:08,535 INFO L225 Difference]: With dead ends: 268 [2020-07-21 19:51:08,536 INFO L226 Difference]: Without dead ends: 227 [2020-07-21 19:51:08,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-21 19:51:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-07-21 19:51:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-07-21 19:51:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-21 19:51:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 294 transitions. [2020-07-21 19:51:08,551 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 294 transitions. Word has length 53 [2020-07-21 19:51:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:08,551 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 294 transitions. [2020-07-21 19:51:08,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 19:51:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 294 transitions. [2020-07-21 19:51:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-21 19:51:08,553 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:08,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:08,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:08,767 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:08,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-07-21 19:51:08,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:08,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487330999] [2020-07-21 19:51:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:08,918 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:08,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:08,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 19:51:08,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:08,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:08,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487330999] [2020-07-21 19:51:08,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:08,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 19:51:08,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591732691] [2020-07-21 19:51:08,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 19:51:09,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:09,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 19:51:09,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 19:51:09,001 INFO L87 Difference]: Start difference. First operand 227 states and 294 transitions. Second operand 9 states. [2020-07-21 19:51:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:09,203 INFO L93 Difference]: Finished difference Result 243 states and 310 transitions. [2020-07-21 19:51:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 19:51:09,204 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-07-21 19:51:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:09,206 INFO L225 Difference]: With dead ends: 243 [2020-07-21 19:51:09,206 INFO L226 Difference]: Without dead ends: 222 [2020-07-21 19:51:09,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-21 19:51:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-07-21 19:51:09,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-07-21 19:51:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-07-21 19:51:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 287 transitions. [2020-07-21 19:51:09,228 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 287 transitions. Word has length 54 [2020-07-21 19:51:09,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:09,230 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 287 transitions. [2020-07-21 19:51:09,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 19:51:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 287 transitions. [2020-07-21 19:51:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 19:51:09,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:09,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:09,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:09,446 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:09,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:09,447 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-07-21 19:51:09,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:09,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018263059] [2020-07-21 19:51:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:09,577 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:09,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:09,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 19:51:09,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:09,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:09,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018263059] [2020-07-21 19:51:09,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:09,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 19:51:09,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13300137] [2020-07-21 19:51:09,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 19:51:09,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:09,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 19:51:09,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 19:51:09,619 INFO L87 Difference]: Start difference. First operand 222 states and 287 transitions. Second operand 6 states. [2020-07-21 19:51:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:09,693 INFO L93 Difference]: Finished difference Result 259 states and 332 transitions. [2020-07-21 19:51:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 19:51:09,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 19:51:09,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:09,695 INFO L225 Difference]: With dead ends: 259 [2020-07-21 19:51:09,696 INFO L226 Difference]: Without dead ends: 252 [2020-07-21 19:51:09,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 19:51:09,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-07-21 19:51:09,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2020-07-21 19:51:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-21 19:51:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 300 transitions. [2020-07-21 19:51:09,711 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 300 transitions. Word has length 57 [2020-07-21 19:51:09,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:09,711 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 300 transitions. [2020-07-21 19:51:09,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 19:51:09,712 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 300 transitions. [2020-07-21 19:51:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 19:51:09,713 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:09,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:09,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:09,927 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:09,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:09,927 INFO L82 PathProgramCache]: Analyzing trace with hash -833535160, now seen corresponding path program 1 times [2020-07-21 19:51:09,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:09,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904921143] [2020-07-21 19:51:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:10,050 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:10,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:10,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 19:51:10,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:10,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:10,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904921143] [2020-07-21 19:51:10,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:10,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 19:51:10,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831192540] [2020-07-21 19:51:10,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 19:51:10,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:10,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 19:51:10,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-21 19:51:10,131 INFO L87 Difference]: Start difference. First operand 232 states and 300 transitions. Second operand 10 states. [2020-07-21 19:51:10,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:10,338 INFO L93 Difference]: Finished difference Result 244 states and 312 transitions. [2020-07-21 19:51:10,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 19:51:10,339 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-07-21 19:51:10,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:10,342 INFO L225 Difference]: With dead ends: 244 [2020-07-21 19:51:10,342 INFO L226 Difference]: Without dead ends: 230 [2020-07-21 19:51:10,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-21 19:51:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-07-21 19:51:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-07-21 19:51:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-21 19:51:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 296 transitions. [2020-07-21 19:51:10,359 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 296 transitions. Word has length 57 [2020-07-21 19:51:10,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:10,359 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 296 transitions. [2020-07-21 19:51:10,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 19:51:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 296 transitions. [2020-07-21 19:51:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 19:51:10,361 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:10,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:10,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:10,576 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:10,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:10,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-07-21 19:51:10,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:10,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021365702] [2020-07-21 19:51:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:10,697 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:10,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:10,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 19:51:10,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:10,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:10,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021365702] [2020-07-21 19:51:10,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:10,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 19:51:10,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145436775] [2020-07-21 19:51:10,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 19:51:10,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:10,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 19:51:10,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-21 19:51:10,769 INFO L87 Difference]: Start difference. First operand 230 states and 296 transitions. Second operand 10 states. [2020-07-21 19:51:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:10,930 INFO L93 Difference]: Finished difference Result 242 states and 308 transitions. [2020-07-21 19:51:10,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 19:51:10,931 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-07-21 19:51:10,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:10,933 INFO L225 Difference]: With dead ends: 242 [2020-07-21 19:51:10,933 INFO L226 Difference]: Without dead ends: 218 [2020-07-21 19:51:10,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-21 19:51:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-07-21 19:51:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-07-21 19:51:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-21 19:51:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 279 transitions. [2020-07-21 19:51:10,947 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 279 transitions. Word has length 56 [2020-07-21 19:51:10,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:10,947 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 279 transitions. [2020-07-21 19:51:10,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 19:51:10,947 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 279 transitions. [2020-07-21 19:51:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 19:51:10,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:10,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:11,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:11,163 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-07-21 19:51:11,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:11,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61649535] [2020-07-21 19:51:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:11,280 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:11,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:11,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 19:51:11,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:11,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:11,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61649535] [2020-07-21 19:51:11,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:11,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 19:51:11,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747336803] [2020-07-21 19:51:11,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 19:51:11,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:11,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 19:51:11,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 19:51:11,338 INFO L87 Difference]: Start difference. First operand 218 states and 279 transitions. Second operand 8 states. [2020-07-21 19:51:11,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:11,674 INFO L93 Difference]: Finished difference Result 357 states and 436 transitions. [2020-07-21 19:51:11,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 19:51:11,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-07-21 19:51:11,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:11,677 INFO L225 Difference]: With dead ends: 357 [2020-07-21 19:51:11,677 INFO L226 Difference]: Without dead ends: 289 [2020-07-21 19:51:11,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-21 19:51:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-07-21 19:51:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 245. [2020-07-21 19:51:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-21 19:51:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 311 transitions. [2020-07-21 19:51:11,695 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 311 transitions. Word has length 55 [2020-07-21 19:51:11,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:11,695 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 311 transitions. [2020-07-21 19:51:11,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 19:51:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 311 transitions. [2020-07-21 19:51:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 19:51:11,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:11,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:11,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:11,913 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:11,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:11,913 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-07-21 19:51:11,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:11,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766156724] [2020-07-21 19:51:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:12,035 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:12,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:12,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 19:51:12,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:12,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:12,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766156724] [2020-07-21 19:51:12,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:12,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 19:51:12,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832904415] [2020-07-21 19:51:12,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 19:51:12,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:12,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 19:51:12,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 19:51:12,104 INFO L87 Difference]: Start difference. First operand 245 states and 311 transitions. Second operand 9 states. [2020-07-21 19:51:12,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:12,273 INFO L93 Difference]: Finished difference Result 261 states and 327 transitions. [2020-07-21 19:51:12,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 19:51:12,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-07-21 19:51:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:12,276 INFO L225 Difference]: With dead ends: 261 [2020-07-21 19:51:12,277 INFO L226 Difference]: Without dead ends: 223 [2020-07-21 19:51:12,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-21 19:51:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-21 19:51:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-07-21 19:51:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-07-21 19:51:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-07-21 19:51:12,293 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 55 [2020-07-21 19:51:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:12,293 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-07-21 19:51:12,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 19:51:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-07-21 19:51:12,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 19:51:12,295 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:12,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:12,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:12,510 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:12,511 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-07-21 19:51:12,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:12,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477560437] [2020-07-21 19:51:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:12,640 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:12,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:51:12,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 19:51:12,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:51:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:51:12,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:51:12,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477560437] [2020-07-21 19:51:12,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:51:12,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 19:51:12,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027557724] [2020-07-21 19:51:12,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 19:51:12,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:51:12,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 19:51:12,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 19:51:12,666 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 5 states. [2020-07-21 19:51:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:51:12,694 INFO L93 Difference]: Finished difference Result 273 states and 325 transitions. [2020-07-21 19:51:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 19:51:12,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-07-21 19:51:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:51:12,696 INFO L225 Difference]: With dead ends: 273 [2020-07-21 19:51:12,697 INFO L226 Difference]: Without dead ends: 214 [2020-07-21 19:51:12,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 19:51:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-21 19:51:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-07-21 19:51:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-07-21 19:51:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2020-07-21 19:51:12,711 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 58 [2020-07-21 19:51:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:51:12,711 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2020-07-21 19:51:12,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 19:51:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2020-07-21 19:51:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 19:51:12,712 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:51:12,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:51:12,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:12,928 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:51:12,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:51:12,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-07-21 19:51:12,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:51:12,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518903956] [2020-07-21 19:51:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:13,043 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:51:13,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 19:51:13,044 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:51:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 19:51:13,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:51:13,253 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 19:51:13,253 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 19:51:13,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:51:13,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:51:13 BoogieIcfgContainer [2020-07-21 19:51:13,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:51:13,644 INFO L168 Benchmark]: Toolchain (without parser) took 13286.78 ms. Allocated memory was 146.3 MB in the beginning and 337.1 MB in the end (delta: 190.8 MB). Free memory was 103.1 MB in the beginning and 304.4 MB in the end (delta: -201.3 MB). Peak memory consumption was 201.9 MB. Max. memory is 7.1 GB. [2020-07-21 19:51:13,645 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 19:51:13,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.33 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 102.7 MB in the beginning and 178.4 MB in the end (delta: -75.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-21 19:51:13,647 INFO L168 Benchmark]: Boogie Preprocessor took 70.40 ms. Allocated memory is still 205.0 MB. Free memory was 178.4 MB in the beginning and 174.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-07-21 19:51:13,650 INFO L168 Benchmark]: RCFGBuilder took 1074.80 ms. Allocated memory is still 205.0 MB. Free memory was 174.7 MB in the beginning and 103.8 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-07-21 19:51:13,651 INFO L168 Benchmark]: TraceAbstraction took 11497.83 ms. Allocated memory was 205.0 MB in the beginning and 337.1 MB in the end (delta: 132.1 MB). Free memory was 103.1 MB in the beginning and 304.4 MB in the end (delta: -201.3 MB). Peak memory consumption was 143.2 MB. Max. memory is 7.1 GB. [2020-07-21 19:51:13,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.33 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 102.7 MB in the beginning and 178.4 MB in the end (delta: -75.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.40 ms. Allocated memory is still 205.0 MB. Free memory was 178.4 MB in the beginning and 174.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1074.80 ms. Allocated memory is still 205.0 MB. Free memory was 174.7 MB in the beginning and 103.8 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11497.83 ms. Allocated memory was 205.0 MB in the beginning and 337.1 MB in the end (delta: 132.1 MB). Free memory was 103.1 MB in the beginning and 304.4 MB in the end (delta: -201.3 MB). Peak memory consumption was 143.2 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 ; VAL [\old(compFptr)=21, \old(compRegistered)=17, \old(customIrp)=11, \old(DC)=19, \old(DevicePowerState)=14, \old(Executive)=9, \old(IPC)=12, \old(KernelMode)=16, \old(lowerDriverReturn)=26, \old(MPR1)=10, \old(MPR3)=22, \old(myStatus)=15, \old(NP)=8, \old(pended)=13, \old(s)=20, \old(setEventCalled)=25, \old(SKIP1)=24, \old(SKIP2)=18, \old(UNLOADED)=27, compFptr=0, compRegistered=0, customIrp=0, DC=0, DevicePowerState=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, UNLOADED=0] [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 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DevicePowerState=1, devobj=0, Executive=0, IPC=0, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, status=0, UNLOADED=0] [L324] CALL _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DevicePowerState=1, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, UNLOADED=0] [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 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L324] RET _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [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 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L335] COND FALSE !(irp_choice == 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L340] CALL stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L340] RET stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [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 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [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 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L104] COND FALSE !(irpStack__MinorFunction == 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L107] COND FALSE !(irpStack__MinorFunction == 23) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L110] COND TRUE irpStack__MinorFunction == 2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L234] devExt__Removed = 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L235] COND TRUE s == NP [L236] s = SKIP1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L487] COND FALSE !(\read(compRegistered)) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [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 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L516] returnVal2 = -1073741823 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L526] COND FALSE !(s == NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L530] COND FALSE !(s == MPR1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L549] return (returnVal2); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, \result=-1073741823, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L245] RET IofCallDriver(devExt__TopOfStack, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IofCallDriver(devExt__TopOfStack, Irp)=-1073741823, IPC=7, Irp=0, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L246] status = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L288] return (status); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, \result=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L386] RET, EXPR KbFilter_PnP(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KbFilter_PnP(devobj, pirp)=0, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L418] COND FALSE !(pended == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L426] COND TRUE s != UNLOADED VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L427] COND TRUE status != -1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L428] COND FALSE !(s != SKIP2) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L438] COND FALSE !(pended == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L445] COND FALSE !(s == DC) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L450] COND TRUE status != lowerDriverReturn VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=-1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L451] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L1011] __VERIFIER_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.2s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4898 SDtfs, 2057 SDslu, 12270 SDs, 0 SdLazy, 1740 SolverSat, 192 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 843 GetRequests, 762 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=355occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 209 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 902 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 828 ConstructedInterpolants, 0 QuantifiedInterpolants, 82923 SizeOfPredicates, 28 NumberOfNonLiveVariables, 8825 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...