/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 NUM_FUNCTIONS --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 13:33:38,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:33:38,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:33:38,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:33:38,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:33:38,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:33:38,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:33:38,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:33:38,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:33:38,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:33:38,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:33:38,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:33:38,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:33:38,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:33:38,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:33:38,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:33:38,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:33:38,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:33:38,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:33:38,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:33:38,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:33:38,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:33:38,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:33:38,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:33:38,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 13:33:38,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 13:33:38,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 13:33:38,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 13:33:38,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 13:33:38,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 13:33:38,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 13:33:38,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 13:33:38,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 13:33:38,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 13:33:38,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 13:33:38,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 13:33:38,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 13:33:38,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 13:33:38,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:33:38,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:33:38,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:33:38,881 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 13:33:38,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:33:38,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:33:38,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:33:38,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:33:38,905 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:33:38,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:33:38,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:33:38,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:33:38,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:33:38,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:33:38,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:33:38,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:33:38,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:33:38,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:33:38,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:33:38,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:33:38,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:33:38,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:33:38,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:33:38,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:33:38,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:33:38,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:33:38,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:33:38,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:33:38,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:33:38,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:33:38,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:38,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:33:38,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:33:38,911 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 -> NUM_FUNCTIONS 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 13:33:39,357 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:33:39,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:33:39,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:33:39,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:33:39,406 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:33:39,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-21 13:33:39,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ccd087f/cd227382300f4a28bf94a83e18a5c0c9/FLAGdca69cd2a [2020-07-21 13:33:40,337 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:33:40,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-21 13:33:40,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ccd087f/cd227382300f4a28bf94a83e18a5c0c9/FLAGdca69cd2a [2020-07-21 13:33:40,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ccd087f/cd227382300f4a28bf94a83e18a5c0c9 [2020-07-21 13:33:40,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:33:40,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:33:40,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:33:40,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:33:40,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:33:40,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:33:40" (1/1) ... [2020-07-21 13:33:40,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19560d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:40, skipping insertion in model container [2020-07-21 13:33:40,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:33:40" (1/1) ... [2020-07-21 13:33:40,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:33:40,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:33:41,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:33:41,264 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:33:41,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:33:41,619 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:33:41,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41 WrapperNode [2020-07-21 13:33:41,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:33:41,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:33:41,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:33:41,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:33:41,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41" (1/1) ... [2020-07-21 13:33:41,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41" (1/1) ... [2020-07-21 13:33:41,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41" (1/1) ... [2020-07-21 13:33:41,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41" (1/1) ... [2020-07-21 13:33:41,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41" (1/1) ... [2020-07-21 13:33:41,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41" (1/1) ... [2020-07-21 13:33:41,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41" (1/1) ... [2020-07-21 13:33:41,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:33:41,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:33:41,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:33:41,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:33:41,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41" (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 13:33:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:33:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:33:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-07-21 13:33:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-07-21 13:33:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-07-21 13:33:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:33:41,937 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-07-21 13:33:41,938 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-07-21 13:33:41,938 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-07-21 13:33:41,938 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-07-21 13:33:41,938 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-07-21 13:33:41,938 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-07-21 13:33:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-07-21 13:33:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-07-21 13:33:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-07-21 13:33:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-07-21 13:33:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-07-21 13:33:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-07-21 13:33:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:33:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 13:33:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:33:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-21 13:33:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-07-21 13:33:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-07-21 13:33:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-07-21 13:33:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-07-21 13:33:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-07-21 13:33:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-07-21 13:33:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-07-21 13:33:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-07-21 13:33:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-07-21 13:33:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-07-21 13:33:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-07-21 13:33:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-07-21 13:33:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-07-21 13:33:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-07-21 13:33:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:33:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-07-21 13:33:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:33:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:33:42,413 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 13:33:42,505 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-07-21 13:33:42,506 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-07-21 13:33:42,554 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 13:33:42,802 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-07-21 13:33:42,803 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-07-21 13:33:42,805 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 13:33:42,924 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-21 13:33:42,925 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-21 13:33:42,951 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 13:33:43,043 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-21 13:33:43,044 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-21 13:33:43,200 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 13:33:43,238 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-07-21 13:33:43,239 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-07-21 13:33:43,280 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 13:33:43,465 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-07-21 13:33:43,466 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-07-21 13:33:43,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:33:43,497 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 13:33:43,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:33:43 BoogieIcfgContainer [2020-07-21 13:33:43,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:33:43,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:33:43,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:33:43,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:33:43,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:33:40" (1/3) ... [2020-07-21 13:33:43,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329f7996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:33:43, skipping insertion in model container [2020-07-21 13:33:43,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:33:41" (2/3) ... [2020-07-21 13:33:43,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329f7996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:33:43, skipping insertion in model container [2020-07-21 13:33:43,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:33:43" (3/3) ... [2020-07-21 13:33:43,525 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-07-21 13:33:43,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:33:43,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:33:43,589 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:33:43,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:33:43,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:33:43,638 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:33:43,638 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:33:43,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:33:43,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:33:43,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:33:43,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:33:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-07-21 13:33:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 13:33:43,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:43,699 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 13:33:43,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:43,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:43,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-07-21 13:33:43,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:43,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685926868] [2020-07-21 13:33:43,729 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 13:33:44,087 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:33:44,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:44,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 13:33:44,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:44,223 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 13:33:44,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:44,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685926868] [2020-07-21 13:33:44,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:44,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:33:44,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857797768] [2020-07-21 13:33:44,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:33:44,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:44,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:33:44,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:33:44,275 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 3 states. [2020-07-21 13:33:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:44,543 INFO L93 Difference]: Finished difference Result 390 states and 586 transitions. [2020-07-21 13:33:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:33:44,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-21 13:33:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:44,574 INFO L225 Difference]: With dead ends: 390 [2020-07-21 13:33:44,575 INFO L226 Difference]: Without dead ends: 231 [2020-07-21 13:33:44,586 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 13:33:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-07-21 13:33:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-07-21 13:33:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-21 13:33:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-07-21 13:33:44,700 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-07-21 13:33:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:44,701 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-07-21 13:33:44,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:33:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-07-21 13:33:44,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 13:33:44,705 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:44,705 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 13:33:44,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:44,920 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:44,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-07-21 13:33:44,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:44,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192202105] [2020-07-21 13:33:44,923 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 13:33:45,102 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:33:45,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:45,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 13:33:45,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:45,136 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 13:33:45,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:45,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192202105] [2020-07-21 13:33:45,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:45,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:33:45,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982020404] [2020-07-21 13:33:45,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:33:45,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:45,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:33:45,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:33:45,144 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 3 states. [2020-07-21 13:33:45,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:45,472 INFO L93 Difference]: Finished difference Result 375 states and 514 transitions. [2020-07-21 13:33:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:33:45,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-21 13:33:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:45,480 INFO L225 Difference]: With dead ends: 375 [2020-07-21 13:33:45,480 INFO L226 Difference]: Without dead ends: 314 [2020-07-21 13:33:45,484 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 13:33:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-21 13:33:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 298. [2020-07-21 13:33:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-07-21 13:33:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 408 transitions. [2020-07-21 13:33:45,555 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 408 transitions. Word has length 28 [2020-07-21 13:33:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:45,556 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 408 transitions. [2020-07-21 13:33:45,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:33:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 408 transitions. [2020-07-21 13:33:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 13:33:45,558 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:45,558 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 13:33:45,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:45,773 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:45,774 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-07-21 13:33:45,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:45,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54978063] [2020-07-21 13:33:45,776 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 13:33:45,965 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:33:45,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:45,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 13:33:45,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:46,014 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 13:33:46,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:46,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54978063] [2020-07-21 13:33:46,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:46,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:33:46,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964960405] [2020-07-21 13:33:46,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:33:46,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:46,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:33:46,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:33:46,025 INFO L87 Difference]: Start difference. First operand 298 states and 408 transitions. Second operand 3 states. [2020-07-21 13:33:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:46,122 INFO L93 Difference]: Finished difference Result 481 states and 640 transitions. [2020-07-21 13:33:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:33:46,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-21 13:33:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:46,136 INFO L225 Difference]: With dead ends: 481 [2020-07-21 13:33:46,136 INFO L226 Difference]: Without dead ends: 362 [2020-07-21 13:33:46,142 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 13:33:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-07-21 13:33:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 338. [2020-07-21 13:33:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-21 13:33:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 459 transitions. [2020-07-21 13:33:46,267 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 459 transitions. Word has length 28 [2020-07-21 13:33:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:46,268 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 459 transitions. [2020-07-21 13:33:46,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:33:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 459 transitions. [2020-07-21 13:33:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 13:33:46,286 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:46,289 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] [2020-07-21 13:33:46,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:46,505 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:46,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:46,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-07-21 13:33:46,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:46,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592021057] [2020-07-21 13:33:46,506 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 13:33:46,690 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:46,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:46,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 13:33:46,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:46,725 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 13:33:46,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:46,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592021057] [2020-07-21 13:33:46,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:46,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:33:46,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643500014] [2020-07-21 13:33:46,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:33:46,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:46,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:33:46,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:33:46,730 INFO L87 Difference]: Start difference. First operand 338 states and 459 transitions. Second operand 3 states. [2020-07-21 13:33:46,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:46,889 INFO L93 Difference]: Finished difference Result 341 states and 461 transitions. [2020-07-21 13:33:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:33:46,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-21 13:33:46,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:46,893 INFO L225 Difference]: With dead ends: 341 [2020-07-21 13:33:46,893 INFO L226 Difference]: Without dead ends: 337 [2020-07-21 13:33:46,895 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 13:33:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-21 13:33:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-07-21 13:33:46,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-21 13:33:46,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 456 transitions. [2020-07-21 13:33:46,925 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 456 transitions. Word has length 38 [2020-07-21 13:33:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:46,926 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 456 transitions. [2020-07-21 13:33:46,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:33:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 456 transitions. [2020-07-21 13:33:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 13:33:46,931 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:46,931 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 13:33:47,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:47,147 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:47,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-07-21 13:33:47,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:47,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243967891] [2020-07-21 13:33:47,149 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 13:33:47,339 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:47,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:47,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:33:47,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:47,431 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 13:33:47,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:47,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243967891] [2020-07-21 13:33:47,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:47,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:33:47,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061633387] [2020-07-21 13:33:47,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:33:47,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:47,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:33:47,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:33:47,436 INFO L87 Difference]: Start difference. First operand 337 states and 456 transitions. Second operand 5 states. [2020-07-21 13:33:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:47,976 INFO L93 Difference]: Finished difference Result 491 states and 654 transitions. [2020-07-21 13:33:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 13:33:47,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-07-21 13:33:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:47,982 INFO L225 Difference]: With dead ends: 491 [2020-07-21 13:33:47,983 INFO L226 Difference]: Without dead ends: 406 [2020-07-21 13:33:47,985 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 13:33:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-07-21 13:33:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 355. [2020-07-21 13:33:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-07-21 13:33:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 478 transitions. [2020-07-21 13:33:48,019 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 478 transitions. Word has length 46 [2020-07-21 13:33:48,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:48,020 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 478 transitions. [2020-07-21 13:33:48,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:33:48,021 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 478 transitions. [2020-07-21 13:33:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 13:33:48,023 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:48,024 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 13:33:48,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:48,235 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:48,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1876426227, now seen corresponding path program 1 times [2020-07-21 13:33:48,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:48,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804690812] [2020-07-21 13:33:48,237 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 13:33:48,412 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:48,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:48,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 13:33:48,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:48,444 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 13:33:48,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:48,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804690812] [2020-07-21 13:33:48,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:48,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:33:48,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371201921] [2020-07-21 13:33:48,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:33:48,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:48,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:33:48,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:33:48,451 INFO L87 Difference]: Start difference. First operand 355 states and 478 transitions. Second operand 3 states. [2020-07-21 13:33:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:48,521 INFO L93 Difference]: Finished difference Result 405 states and 534 transitions. [2020-07-21 13:33:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:33:48,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-21 13:33:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:48,531 INFO L225 Difference]: With dead ends: 405 [2020-07-21 13:33:48,532 INFO L226 Difference]: Without dead ends: 338 [2020-07-21 13:33:48,542 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 13:33:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-07-21 13:33:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 314. [2020-07-21 13:33:48,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-07-21 13:33:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 419 transitions. [2020-07-21 13:33:48,585 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 419 transitions. Word has length 46 [2020-07-21 13:33:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:48,585 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 419 transitions. [2020-07-21 13:33:48,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:33:48,586 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 419 transitions. [2020-07-21 13:33:48,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 13:33:48,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:48,590 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 13:33:48,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:48,793 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:48,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:48,794 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-07-21 13:33:48,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:48,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145532842] [2020-07-21 13:33:48,795 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 13:33:48,959 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:48,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:48,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 13:33:48,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:48,989 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 13:33:48,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:48,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145532842] [2020-07-21 13:33:48,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:48,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:33:48,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720868731] [2020-07-21 13:33:48,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:33:48,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:48,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:33:48,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:33:48,994 INFO L87 Difference]: Start difference. First operand 314 states and 419 transitions. Second operand 3 states. [2020-07-21 13:33:49,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:49,036 INFO L93 Difference]: Finished difference Result 326 states and 434 transitions. [2020-07-21 13:33:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:33:49,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-07-21 13:33:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:49,041 INFO L225 Difference]: With dead ends: 326 [2020-07-21 13:33:49,042 INFO L226 Difference]: Without dead ends: 310 [2020-07-21 13:33:49,043 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 13:33:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-07-21 13:33:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 280. [2020-07-21 13:33:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-07-21 13:33:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 377 transitions. [2020-07-21 13:33:49,069 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 377 transitions. Word has length 45 [2020-07-21 13:33:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:49,069 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 377 transitions. [2020-07-21 13:33:49,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:33:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 377 transitions. [2020-07-21 13:33:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 13:33:49,072 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:49,072 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 13:33:49,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:49,289 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:49,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:49,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-07-21 13:33:49,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:49,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899186644] [2020-07-21 13:33:49,291 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 13:33:49,506 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:49,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:49,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 13:33:49,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:49,542 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 13:33:49,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:49,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899186644] [2020-07-21 13:33:49,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:49,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:33:49,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747635888] [2020-07-21 13:33:49,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:33:49,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:49,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:33:49,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:33:49,554 INFO L87 Difference]: Start difference. First operand 280 states and 377 transitions. Second operand 3 states. [2020-07-21 13:33:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:49,697 INFO L93 Difference]: Finished difference Result 300 states and 398 transitions. [2020-07-21 13:33:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:33:49,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-21 13:33:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:49,707 INFO L225 Difference]: With dead ends: 300 [2020-07-21 13:33:49,708 INFO L226 Difference]: Without dead ends: 258 [2020-07-21 13:33:49,710 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 13:33:49,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-21 13:33:49,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-07-21 13:33:49,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-07-21 13:33:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 339 transitions. [2020-07-21 13:33:49,743 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 339 transitions. Word has length 46 [2020-07-21 13:33:49,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:49,744 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 339 transitions. [2020-07-21 13:33:49,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:33:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 339 transitions. [2020-07-21 13:33:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 13:33:49,748 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:49,748 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 13:33:49,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:49,963 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:49,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-07-21 13:33:49,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:49,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052716982] [2020-07-21 13:33:49,965 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 13:33:50,102 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:33:50,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:50,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 13:33:50,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:50,131 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 13:33:50,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:50,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052716982] [2020-07-21 13:33:50,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:50,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:33:50,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692234137] [2020-07-21 13:33:50,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:33:50,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:50,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:33:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:33:50,136 INFO L87 Difference]: Start difference. First operand 258 states and 339 transitions. Second operand 3 states. [2020-07-21 13:33:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:50,235 INFO L93 Difference]: Finished difference Result 286 states and 372 transitions. [2020-07-21 13:33:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:33:50,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-21 13:33:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:50,240 INFO L225 Difference]: With dead ends: 286 [2020-07-21 13:33:50,241 INFO L226 Difference]: Without dead ends: 256 [2020-07-21 13:33:50,242 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 13:33:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-21 13:33:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-07-21 13:33:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-21 13:33:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 335 transitions. [2020-07-21 13:33:50,265 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 335 transitions. Word has length 53 [2020-07-21 13:33:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:50,265 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 335 transitions. [2020-07-21 13:33:50,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:33:50,266 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 335 transitions. [2020-07-21 13:33:50,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 13:33:50,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:50,268 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 13:33:50,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:50,485 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:50,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:50,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-07-21 13:33:50,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:50,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187203197] [2020-07-21 13:33:50,488 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 13:33:50,609 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:33:50,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:50,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:33:50,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:50,700 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 13:33:50,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:50,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187203197] [2020-07-21 13:33:50,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:50,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 13:33:50,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51876437] [2020-07-21 13:33:50,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:33:50,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:50,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:33:50,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:33:50,704 INFO L87 Difference]: Start difference. First operand 256 states and 335 transitions. Second operand 6 states. [2020-07-21 13:33:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:51,346 INFO L93 Difference]: Finished difference Result 297 states and 381 transitions. [2020-07-21 13:33:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:33:51,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-21 13:33:51,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:51,349 INFO L225 Difference]: With dead ends: 297 [2020-07-21 13:33:51,349 INFO L226 Difference]: Without dead ends: 256 [2020-07-21 13:33:51,350 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 13:33:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-21 13:33:51,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-07-21 13:33:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-21 13:33:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 333 transitions. [2020-07-21 13:33:51,377 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 333 transitions. Word has length 51 [2020-07-21 13:33:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:51,377 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 333 transitions. [2020-07-21 13:33:51,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:33:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 333 transitions. [2020-07-21 13:33:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 13:33:51,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:51,381 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 13:33:51,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:51,596 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:51,596 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-07-21 13:33:51,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:51,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427892324] [2020-07-21 13:33:51,599 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 13:33:51,765 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:51,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:51,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 13:33:51,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:51,839 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 13:33:51,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:51,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427892324] [2020-07-21 13:33:51,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:51,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 13:33:51,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033592123] [2020-07-21 13:33:51,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 13:33:51,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:51,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 13:33:51,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:33:51,842 INFO L87 Difference]: Start difference. First operand 256 states and 333 transitions. Second operand 8 states. [2020-07-21 13:33:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:52,060 INFO L93 Difference]: Finished difference Result 268 states and 345 transitions. [2020-07-21 13:33:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:33:52,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-21 13:33:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:52,065 INFO L225 Difference]: With dead ends: 268 [2020-07-21 13:33:52,066 INFO L226 Difference]: Without dead ends: 227 [2020-07-21 13:33:52,067 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 13:33:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-07-21 13:33:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-07-21 13:33:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-21 13:33:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 294 transitions. [2020-07-21 13:33:52,093 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 294 transitions. Word has length 53 [2020-07-21 13:33:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:52,093 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 294 transitions. [2020-07-21 13:33:52,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 13:33:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 294 transitions. [2020-07-21 13:33:52,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-21 13:33:52,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:52,096 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 13:33:52,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:52,311 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:52,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:52,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-07-21 13:33:52,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:52,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937382314] [2020-07-21 13:33:52,313 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 13:33:52,471 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:52,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:52,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 13:33:52,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:52,575 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 13:33:52,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:52,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937382314] [2020-07-21 13:33:52,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:52,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 13:33:52,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431516465] [2020-07-21 13:33:52,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 13:33:52,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:52,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 13:33:52,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:33:52,582 INFO L87 Difference]: Start difference. First operand 227 states and 294 transitions. Second operand 9 states. [2020-07-21 13:33:52,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:52,882 INFO L93 Difference]: Finished difference Result 243 states and 310 transitions. [2020-07-21 13:33:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 13:33:52,883 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-07-21 13:33:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:52,886 INFO L225 Difference]: With dead ends: 243 [2020-07-21 13:33:52,886 INFO L226 Difference]: Without dead ends: 222 [2020-07-21 13:33:52,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-21 13:33:52,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-07-21 13:33:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-07-21 13:33:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-07-21 13:33:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 287 transitions. [2020-07-21 13:33:52,920 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 287 transitions. Word has length 54 [2020-07-21 13:33:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:52,922 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 287 transitions. [2020-07-21 13:33:52,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 13:33:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 287 transitions. [2020-07-21 13:33:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 13:33:52,925 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:52,925 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 13:33:53,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:53,136 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:53,137 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-07-21 13:33:53,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:53,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713090740] [2020-07-21 13:33:53,138 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 13:33:53,335 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:53,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:53,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 13:33:53,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:53,392 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 13:33:53,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:53,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713090740] [2020-07-21 13:33:53,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:53,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 13:33:53,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437418017] [2020-07-21 13:33:53,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:33:53,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:53,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:33:53,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:33:53,397 INFO L87 Difference]: Start difference. First operand 222 states and 287 transitions. Second operand 6 states. [2020-07-21 13:33:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:53,505 INFO L93 Difference]: Finished difference Result 259 states and 332 transitions. [2020-07-21 13:33:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 13:33:53,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 13:33:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:53,508 INFO L225 Difference]: With dead ends: 259 [2020-07-21 13:33:53,508 INFO L226 Difference]: Without dead ends: 252 [2020-07-21 13:33:53,509 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 13:33:53,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-07-21 13:33:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2020-07-21 13:33:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-21 13:33:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 300 transitions. [2020-07-21 13:33:53,530 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 300 transitions. Word has length 57 [2020-07-21 13:33:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:53,530 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 300 transitions. [2020-07-21 13:33:53,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:33:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 300 transitions. [2020-07-21 13:33:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 13:33:53,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:53,533 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 13:33:53,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:53,747 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:53,748 INFO L82 PathProgramCache]: Analyzing trace with hash -833535160, now seen corresponding path program 1 times [2020-07-21 13:33:53,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:53,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394928011] [2020-07-21 13:33:53,749 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 13:33:53,892 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:53,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:53,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 13:33:53,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:53,976 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 13:33:53,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:53,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394928011] [2020-07-21 13:33:53,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:53,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 13:33:53,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129638079] [2020-07-21 13:33:53,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 13:33:53,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:53,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 13:33:53,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-21 13:33:53,980 INFO L87 Difference]: Start difference. First operand 232 states and 300 transitions. Second operand 10 states. [2020-07-21 13:33:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:54,264 INFO L93 Difference]: Finished difference Result 244 states and 312 transitions. [2020-07-21 13:33:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 13:33:54,265 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-07-21 13:33:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:54,269 INFO L225 Difference]: With dead ends: 244 [2020-07-21 13:33:54,269 INFO L226 Difference]: Without dead ends: 230 [2020-07-21 13:33:54,270 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 13:33:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-07-21 13:33:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-07-21 13:33:54,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-21 13:33:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 296 transitions. [2020-07-21 13:33:54,293 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 296 transitions. Word has length 57 [2020-07-21 13:33:54,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:54,294 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 296 transitions. [2020-07-21 13:33:54,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 13:33:54,294 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 296 transitions. [2020-07-21 13:33:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 13:33:54,297 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:54,297 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 13:33:54,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:54,513 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:54,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:54,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-07-21 13:33:54,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:54,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902175820] [2020-07-21 13:33:54,516 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 13:33:54,661 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:54,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:54,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 13:33:54,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:54,754 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 13:33:54,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:54,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902175820] [2020-07-21 13:33:54,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:54,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 13:33:54,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175103285] [2020-07-21 13:33:54,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 13:33:54,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:54,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 13:33:54,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-21 13:33:54,759 INFO L87 Difference]: Start difference. First operand 230 states and 296 transitions. Second operand 10 states. [2020-07-21 13:33:55,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:55,042 INFO L93 Difference]: Finished difference Result 242 states and 308 transitions. [2020-07-21 13:33:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 13:33:55,044 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-07-21 13:33:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:55,046 INFO L225 Difference]: With dead ends: 242 [2020-07-21 13:33:55,047 INFO L226 Difference]: Without dead ends: 218 [2020-07-21 13:33:55,048 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 13:33:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-07-21 13:33:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-07-21 13:33:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-21 13:33:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 279 transitions. [2020-07-21 13:33:55,071 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 279 transitions. Word has length 56 [2020-07-21 13:33:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:55,071 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 279 transitions. [2020-07-21 13:33:55,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 13:33:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 279 transitions. [2020-07-21 13:33:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 13:33:55,074 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:55,074 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 13:33:55,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:55,289 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-07-21 13:33:55,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:55,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711236195] [2020-07-21 13:33:55,291 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 13:33:55,501 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:55,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:55,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 13:33:55,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:55,604 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 13:33:55,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:55,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711236195] [2020-07-21 13:33:55,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:55,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 13:33:55,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825944558] [2020-07-21 13:33:55,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 13:33:55,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:55,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 13:33:55,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:33:55,615 INFO L87 Difference]: Start difference. First operand 218 states and 279 transitions. Second operand 8 states. [2020-07-21 13:33:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:56,031 INFO L93 Difference]: Finished difference Result 357 states and 436 transitions. [2020-07-21 13:33:56,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:33:56,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-07-21 13:33:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:56,037 INFO L225 Difference]: With dead ends: 357 [2020-07-21 13:33:56,038 INFO L226 Difference]: Without dead ends: 289 [2020-07-21 13:33:56,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-21 13:33:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-07-21 13:33:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 245. [2020-07-21 13:33:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-21 13:33:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 311 transitions. [2020-07-21 13:33:56,064 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 311 transitions. Word has length 55 [2020-07-21 13:33:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:56,065 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 311 transitions. [2020-07-21 13:33:56,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 13:33:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 311 transitions. [2020-07-21 13:33:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 13:33:56,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:56,067 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 13:33:56,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:56,281 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:56,282 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-07-21 13:33:56,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:56,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015671285] [2020-07-21 13:33:56,283 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 13:33:56,428 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:56,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:56,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 13:33:56,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:56,493 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 13:33:56,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:56,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015671285] [2020-07-21 13:33:56,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:56,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 13:33:56,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131812183] [2020-07-21 13:33:56,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 13:33:56,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:56,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 13:33:56,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:33:56,497 INFO L87 Difference]: Start difference. First operand 245 states and 311 transitions. Second operand 9 states. [2020-07-21 13:33:56,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:56,734 INFO L93 Difference]: Finished difference Result 261 states and 327 transitions. [2020-07-21 13:33:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 13:33:56,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-07-21 13:33:56,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:56,739 INFO L225 Difference]: With dead ends: 261 [2020-07-21 13:33:56,740 INFO L226 Difference]: Without dead ends: 223 [2020-07-21 13:33:56,742 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 13:33:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-21 13:33:56,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-07-21 13:33:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-07-21 13:33:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-07-21 13:33:56,769 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 55 [2020-07-21 13:33:56,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:56,770 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-07-21 13:33:56,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 13:33:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-07-21 13:33:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 13:33:56,771 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:56,772 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 13:33:56,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:56,988 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:56,988 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-07-21 13:33:56,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:56,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772500906] [2020-07-21 13:33:56,990 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 13:33:57,294 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:57,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:33:57,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 13:33:57,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:33:57,336 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 13:33:57,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:33:57,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772500906] [2020-07-21 13:33:57,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:33:57,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:33:57,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966904196] [2020-07-21 13:33:57,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:33:57,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:33:57,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:33:57,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:33:57,340 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 5 states. [2020-07-21 13:33:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:33:57,372 INFO L93 Difference]: Finished difference Result 273 states and 325 transitions. [2020-07-21 13:33:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 13:33:57,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-07-21 13:33:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:33:57,377 INFO L225 Difference]: With dead ends: 273 [2020-07-21 13:33:57,377 INFO L226 Difference]: Without dead ends: 214 [2020-07-21 13:33:57,378 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 13:33:57,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-21 13:33:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-07-21 13:33:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-07-21 13:33:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2020-07-21 13:33:57,402 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 58 [2020-07-21 13:33:57,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:33:57,403 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2020-07-21 13:33:57,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:33:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2020-07-21 13:33:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 13:33:57,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:33:57,406 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 13:33:57,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:57,621 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:33:57,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:33:57,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-07-21 13:33:57,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:33:57,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307696715] [2020-07-21 13:33:57,624 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 13:33:57,820 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:33:57,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 13:33:57,821 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 13:33:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 13:33:57,874 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 13:33:58,087 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 13:33:58,088 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 13:33:58,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:33:58,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:33:58 BoogieIcfgContainer [2020-07-21 13:33:58,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:33:58,495 INFO L168 Benchmark]: Toolchain (without parser) took 17921.46 ms. Allocated memory was 143.7 MB in the beginning and 369.6 MB in the end (delta: 226.0 MB). Free memory was 100.9 MB in the beginning and 249.1 MB in the end (delta: -148.2 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:33:58,495 INFO L168 Benchmark]: CDTParser took 1.57 ms. Allocated memory is still 143.7 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 13:33:58,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1039.15 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 100.5 MB in the beginning and 180.2 MB in the end (delta: -79.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:33:58,497 INFO L168 Benchmark]: Boogie Preprocessor took 217.29 ms. Allocated memory is still 204.5 MB. Free memory was 180.2 MB in the beginning and 177.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-07-21 13:33:58,503 INFO L168 Benchmark]: RCFGBuilder took 1668.99 ms. Allocated memory is still 204.5 MB. Free memory was 177.0 MB in the beginning and 105.6 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2020-07-21 13:33:58,504 INFO L168 Benchmark]: TraceAbstraction took 14978.64 ms. Allocated memory was 204.5 MB in the beginning and 369.6 MB in the end (delta: 165.2 MB). Free memory was 104.5 MB in the beginning and 249.1 MB in the end (delta: -144.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-21 13:33:58,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.57 ms. Allocated memory is still 143.7 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1039.15 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 100.5 MB in the beginning and 180.2 MB in the end (delta: -79.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 217.29 ms. Allocated memory is still 204.5 MB. Free memory was 180.2 MB in the beginning and 177.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1668.99 ms. Allocated memory is still 204.5 MB. Free memory was 177.0 MB in the beginning and 105.6 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14978.64 ms. Allocated memory was 204.5 MB in the beginning and 369.6 MB in the end (delta: 165.2 MB). Free memory was 104.5 MB in the beginning and 249.1 MB in the end (delta: -144.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; 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: 14.6s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4896 SDtfs, 2057 SDslu, 12270 SDs, 0 SdLazy, 1740 SolverSat, 192 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 843 GetRequests, 762 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s 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: 0.6s AutomataMinimizationTime, 18 MinimizatonAttempts, 209 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 902 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 828 ConstructedInterpolants, 0 QuantifiedInterpolants, 82923 SizeOfPredicates, 28 NumberOfNonLiveVariables, 8975 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...