/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -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 0.1.25-5644d1e-m [2020-08-18 23:31:55,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:31:55,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:31:55,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:31:55,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:31:55,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:31:55,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:31:55,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:31:55,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:31:55,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:31:55,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:31:55,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:31:55,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:31:55,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:31:55,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:31:55,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:31:55,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:31:55,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:31:55,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:31:55,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:31:55,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:31:55,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:31:55,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:31:55,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:31:55,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:31:55,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:31:55,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:31:55,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:31:55,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:31:55,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:31:55,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:31:55,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:31:55,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:31:55,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:31:55,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:31:55,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:31:55,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:31:55,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:31:55,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:31:55,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:31:55,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:31:55,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:31:55,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:31:55,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:31:55,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:31:55,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:31:55,315 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:31:55,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:31:55,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:31:55,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:31:55,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:31:55,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:31:55,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:31:55,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:31:55,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:31:55,318 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:31:55,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:31:55,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:31:55,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:31:55,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:31:55,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:31:55,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:31:55,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:31:55,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:31:55,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:31:55,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:31:55,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:31:55,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:31:55,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:31:55,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:31:55,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:31:55,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:31:55,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:31:55,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:31:55,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:31:55,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:31:55,679 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:31:55,680 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-18 23:31:55,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10e0a4d9f/116c479a227d40b69d33669753ac7ba8/FLAGc9c0bcdca [2020-08-18 23:31:56,292 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:31:56,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-18 23:31:56,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10e0a4d9f/116c479a227d40b69d33669753ac7ba8/FLAGc9c0bcdca [2020-08-18 23:31:56,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10e0a4d9f/116c479a227d40b69d33669753ac7ba8 [2020-08-18 23:31:56,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:31:56,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:31:56,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:31:56,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:31:56,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:31:56,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:31:56" (1/1) ... [2020-08-18 23:31:56,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bbc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:56, skipping insertion in model container [2020-08-18 23:31:56,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:31:56" (1/1) ... [2020-08-18 23:31:56,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:31:56,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:31:57,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:31:57,020 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:31:57,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:31:57,205 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:31:57,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57 WrapperNode [2020-08-18 23:31:57,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:31:57,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:31:57,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:31:57,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:31:57,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57" (1/1) ... [2020-08-18 23:31:57,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57" (1/1) ... [2020-08-18 23:31:57,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57" (1/1) ... [2020-08-18 23:31:57,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57" (1/1) ... [2020-08-18 23:31:57,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57" (1/1) ... [2020-08-18 23:31:57,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57" (1/1) ... [2020-08-18 23:31:57,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57" (1/1) ... [2020-08-18 23:31:57,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:31:57,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:31:57,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:31:57,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:31:57,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:31:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:31:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:31:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-08-18 23:31:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-08-18 23:31:57,340 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-08-18 23:31:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:31:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-08-18 23:31:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-08-18 23:31:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-08-18 23:31:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-08-18 23:31:57,341 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-08-18 23:31:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-08-18 23:31:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-08-18 23:31:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-08-18 23:31:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-08-18 23:31:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-08-18 23:31:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-08-18 23:31:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-08-18 23:31:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:31:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 23:31:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:31:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-18 23:31:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-08-18 23:31:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-08-18 23:31:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-08-18 23:31:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-08-18 23:31:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-08-18 23:31:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-08-18 23:31:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-08-18 23:31:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-08-18 23:31:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-08-18 23:31:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-08-18 23:31:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-08-18 23:31:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-08-18 23:31:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-08-18 23:31:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-08-18 23:31:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:31:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-08-18 23:31:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:31:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:31:57,663 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 23:31:57,739 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-08-18 23:31:57,739 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-08-18 23:31:57,760 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 23:31:57,863 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-08-18 23:31:57,863 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-08-18 23:31:57,865 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 23:31:57,903 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-18 23:31:57,904 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-18 23:31:57,910 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 23:31:57,953 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-18 23:31:57,954 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-18 23:31:58,043 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 23:31:58,064 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-08-18 23:31:58,064 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-08-18 23:31:58,088 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-18 23:31:58,179 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-08-18 23:31:58,179 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-08-18 23:31:58,198 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:31:58,199 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 23:31:58,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:31:58 BoogieIcfgContainer [2020-08-18 23:31:58,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:31:58,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:31:58,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:31:58,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:31:58,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:31:56" (1/3) ... [2020-08-18 23:31:58,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd6e5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:31:58, skipping insertion in model container [2020-08-18 23:31:58,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:31:57" (2/3) ... [2020-08-18 23:31:58,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd6e5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:31:58, skipping insertion in model container [2020-08-18 23:31:58,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:31:58" (3/3) ... [2020-08-18 23:31:58,215 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-08-18 23:31:58,227 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:31:58,235 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:31:58,250 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:31:58,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:31:58,277 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:31:58,277 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:31:58,277 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:31:58,277 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:31:58,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:31:58,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:31:58,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:31:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-08-18 23:31:58,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 23:31:58,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:31:58,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:31:58,318 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:31:58,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:31:58,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-08-18 23:31:58,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:31:58,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776893274] [2020-08-18 23:31:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:31:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:31:58,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:31:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:31:58,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:31:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:31:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:31:58,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776893274] [2020-08-18 23:31:58,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:31:58,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:31:58,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613509489] [2020-08-18 23:31:58,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:31:58,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:31:58,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:31:58,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:31:58,772 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-08-18 23:31:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:31:59,937 INFO L93 Difference]: Finished difference Result 418 states and 629 transitions. [2020-08-18 23:31:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:31:59,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-18 23:31:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:31:59,957 INFO L225 Difference]: With dead ends: 418 [2020-08-18 23:31:59,957 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 23:31:59,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:31:59,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 23:32:00,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2020-08-18 23:32:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-18 23:32:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-08-18 23:32:00,046 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-08-18 23:32:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:00,046 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-08-18 23:32:00,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:32:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-08-18 23:32:00,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 23:32:00,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:00,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:00,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:32:00,049 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:00,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:00,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-08-18 23:32:00,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:00,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055364308] [2020-08-18 23:32:00,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:00,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:00,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055364308] [2020-08-18 23:32:00,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:00,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:32:00,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403588342] [2020-08-18 23:32:00,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:32:00,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:00,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:32:00,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:32:00,340 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 6 states. [2020-08-18 23:32:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:01,571 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2020-08-18 23:32:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 23:32:01,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 23:32:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:01,576 INFO L225 Difference]: With dead ends: 410 [2020-08-18 23:32:01,577 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 23:32:01,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:32:01,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 23:32:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2020-08-18 23:32:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-18 23:32:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2020-08-18 23:32:01,622 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2020-08-18 23:32:01,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:01,622 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2020-08-18 23:32:01,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:32:01,623 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2020-08-18 23:32:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 23:32:01,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:01,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:01,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:32:01,625 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:01,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:01,625 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-08-18 23:32:01,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:01,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118658415] [2020-08-18 23:32:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:01,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:01,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118658415] [2020-08-18 23:32:01,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:01,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:32:01,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086715863] [2020-08-18 23:32:01,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:32:01,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:01,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:32:01,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:32:01,778 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand 6 states. [2020-08-18 23:32:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:02,593 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2020-08-18 23:32:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 23:32:02,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 23:32:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:02,597 INFO L225 Difference]: With dead ends: 487 [2020-08-18 23:32:02,597 INFO L226 Difference]: Without dead ends: 368 [2020-08-18 23:32:02,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:32:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-08-18 23:32:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2020-08-18 23:32:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-18 23:32:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2020-08-18 23:32:02,653 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2020-08-18 23:32:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:02,654 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2020-08-18 23:32:02,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:32:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2020-08-18 23:32:02,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 23:32:02,657 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:02,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:02,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:32:02,658 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:02,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-08-18 23:32:02,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:02,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844120011] [2020-08-18 23:32:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:02,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:02,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:02,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844120011] [2020-08-18 23:32:02,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:02,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:32:02,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333484904] [2020-08-18 23:32:02,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:32:02,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:02,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:32:02,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:32:02,829 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand 6 states. [2020-08-18 23:32:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:03,617 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2020-08-18 23:32:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 23:32:03,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-18 23:32:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:03,621 INFO L225 Difference]: With dead ends: 347 [2020-08-18 23:32:03,622 INFO L226 Difference]: Without dead ends: 343 [2020-08-18 23:32:03,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:32:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-18 23:32:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-08-18 23:32:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-18 23:32:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2020-08-18 23:32:03,673 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2020-08-18 23:32:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:03,674 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2020-08-18 23:32:03,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:32:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2020-08-18 23:32:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 23:32:03,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:03,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:03,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:32:03,690 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:03,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:03,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-08-18 23:32:03,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:03,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189793396] [2020-08-18 23:32:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:03,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:03,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:32:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:03,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189793396] [2020-08-18 23:32:03,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:03,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:32:03,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607895621] [2020-08-18 23:32:03,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:32:03,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:03,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:32:03,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:32:03,923 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand 8 states. [2020-08-18 23:32:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:05,070 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2020-08-18 23:32:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:32:05,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-18 23:32:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:05,074 INFO L225 Difference]: With dead ends: 394 [2020-08-18 23:32:05,074 INFO L226 Difference]: Without dead ends: 325 [2020-08-18 23:32:05,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:32:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-08-18 23:32:05,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2020-08-18 23:32:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-18 23:32:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2020-08-18 23:32:05,107 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2020-08-18 23:32:05,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:05,110 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2020-08-18 23:32:05,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:32:05,110 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2020-08-18 23:32:05,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-18 23:32:05,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:05,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:05,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:32:05,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:05,114 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-08-18 23:32:05,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:05,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235024800] [2020-08-18 23:32:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:32:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 23:32:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:05,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235024800] [2020-08-18 23:32:05,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:05,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:32:05,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901795272] [2020-08-18 23:32:05,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:32:05,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:05,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:32:05,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:32:05,315 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand 8 states. [2020-08-18 23:32:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:05,781 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2020-08-18 23:32:05,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:32:05,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-18 23:32:05,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:05,786 INFO L225 Difference]: With dead ends: 316 [2020-08-18 23:32:05,786 INFO L226 Difference]: Without dead ends: 300 [2020-08-18 23:32:05,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:32:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-18 23:32:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 270. [2020-08-18 23:32:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-18 23:32:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2020-08-18 23:32:05,809 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 45 [2020-08-18 23:32:05,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:05,809 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2020-08-18 23:32:05,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:32:05,809 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2020-08-18 23:32:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 23:32:05,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:05,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:05,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:32:05,811 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:05,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-08-18 23:32:05,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:05,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875074364] [2020-08-18 23:32:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:32:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:06,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 23:32:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:06,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875074364] [2020-08-18 23:32:06,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:06,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:32:06,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125890171] [2020-08-18 23:32:06,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:32:06,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:06,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:32:06,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:32:06,038 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand 8 states. [2020-08-18 23:32:07,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:07,025 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2020-08-18 23:32:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:32:07,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-18 23:32:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:07,029 INFO L225 Difference]: With dead ends: 290 [2020-08-18 23:32:07,029 INFO L226 Difference]: Without dead ends: 242 [2020-08-18 23:32:07,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:32:07,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-18 23:32:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-18 23:32:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 23:32:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-08-18 23:32:07,049 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-08-18 23:32:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:07,050 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-08-18 23:32:07,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:32:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-08-18 23:32:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 23:32:07,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:07,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:07,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:32:07,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:07,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:07,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-08-18 23:32:07,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:07,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939802876] [2020-08-18 23:32:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:32:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:07,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:07,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:32:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:07,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939802876] [2020-08-18 23:32:07,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:07,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:32:07,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625839747] [2020-08-18 23:32:07,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:32:07,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:07,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:32:07,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:32:07,234 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 8 states. [2020-08-18 23:32:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:07,857 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-08-18 23:32:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:32:07,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-18 23:32:07,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:07,862 INFO L225 Difference]: With dead ends: 270 [2020-08-18 23:32:07,863 INFO L226 Difference]: Without dead ends: 240 [2020-08-18 23:32:07,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:32:07,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-18 23:32:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-08-18 23:32:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 23:32:07,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-08-18 23:32:07,889 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-08-18 23:32:07,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:07,890 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-08-18 23:32:07,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:32:07,890 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-08-18 23:32:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 23:32:07,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:07,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:07,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:32:07,892 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:07,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:07,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-08-18 23:32:07,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:07,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393975274] [2020-08-18 23:32:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:08,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:08,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:08,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:32:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:08,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:08,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393975274] [2020-08-18 23:32:08,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:08,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:32:08,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045262678] [2020-08-18 23:32:08,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:32:08,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:08,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:32:08,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:32:08,224 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 9 states. [2020-08-18 23:32:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:09,619 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-08-18 23:32:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 23:32:09,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-08-18 23:32:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:09,623 INFO L225 Difference]: With dead ends: 313 [2020-08-18 23:32:09,623 INFO L226 Difference]: Without dead ends: 307 [2020-08-18 23:32:09,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:32:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-18 23:32:09,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 274. [2020-08-18 23:32:09,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-08-18 23:32:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 356 transitions. [2020-08-18 23:32:09,651 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 356 transitions. Word has length 51 [2020-08-18 23:32:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:09,651 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 356 transitions. [2020-08-18 23:32:09,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:32:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 356 transitions. [2020-08-18 23:32:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:32:09,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:09,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:09,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:32:09,654 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:09,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:09,655 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-08-18 23:32:09,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:09,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125450324] [2020-08-18 23:32:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:09,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:09,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:09,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:32:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:09,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:09,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125450324] [2020-08-18 23:32:09,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:09,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:32:09,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300022949] [2020-08-18 23:32:09,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:32:09,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:09,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:32:09,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:32:09,935 INFO L87 Difference]: Start difference. First operand 274 states and 356 transitions. Second operand 13 states. [2020-08-18 23:32:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:11,969 INFO L93 Difference]: Finished difference Result 325 states and 410 transitions. [2020-08-18 23:32:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 23:32:11,969 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-08-18 23:32:11,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:11,972 INFO L225 Difference]: With dead ends: 325 [2020-08-18 23:32:11,972 INFO L226 Difference]: Without dead ends: 284 [2020-08-18 23:32:11,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-08-18 23:32:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-18 23:32:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 240. [2020-08-18 23:32:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 23:32:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-08-18 23:32:12,014 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 52 [2020-08-18 23:32:12,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:12,014 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-08-18 23:32:12,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:32:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-08-18 23:32:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 23:32:12,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:12,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:12,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:32:12,018 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:12,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:12,018 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-08-18 23:32:12,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:12,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594205932] [2020-08-18 23:32:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:12,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:12,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:32:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:12,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594205932] [2020-08-18 23:32:12,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:12,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:32:12,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803131034] [2020-08-18 23:32:12,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:32:12,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:12,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:32:12,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:32:12,294 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 12 states. [2020-08-18 23:32:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:13,478 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-08-18 23:32:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 23:32:13,479 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-08-18 23:32:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:13,481 INFO L225 Difference]: With dead ends: 252 [2020-08-18 23:32:13,482 INFO L226 Difference]: Without dead ends: 211 [2020-08-18 23:32:13,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:32:13,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-08-18 23:32:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-08-18 23:32:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-18 23:32:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-08-18 23:32:13,500 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-08-18 23:32:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:13,501 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-08-18 23:32:13,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:32:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-08-18 23:32:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 23:32:13,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:13,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:13,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:32:13,503 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:13,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-08-18 23:32:13,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:13,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109468025] [2020-08-18 23:32:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:13,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:13,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:13,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:13,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:32:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:13,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:13,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109468025] [2020-08-18 23:32:13,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:13,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 23:32:13,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224821446] [2020-08-18 23:32:13,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 23:32:13,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:13,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 23:32:13,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:32:13,738 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 14 states. [2020-08-18 23:32:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:14,869 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-08-18 23:32:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:32:14,870 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-18 23:32:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:14,871 INFO L225 Difference]: With dead ends: 227 [2020-08-18 23:32:14,871 INFO L226 Difference]: Without dead ends: 206 [2020-08-18 23:32:14,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:32:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-18 23:32:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-18 23:32:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-18 23:32:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-08-18 23:32:14,890 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-08-18 23:32:14,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:14,890 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-08-18 23:32:14,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 23:32:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-08-18 23:32:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 23:32:14,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:14,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:14,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:32:14,892 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:14,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-08-18 23:32:14,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:14,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828233898] [2020-08-18 23:32:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:14,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:32:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:15,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828233898] [2020-08-18 23:32:15,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:15,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:32:15,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122120580] [2020-08-18 23:32:15,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:32:15,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:15,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:32:15,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:32:15,113 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 11 states. [2020-08-18 23:32:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:15,930 INFO L93 Difference]: Finished difference Result 296 states and 379 transitions. [2020-08-18 23:32:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:32:15,931 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-18 23:32:15,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:15,933 INFO L225 Difference]: With dead ends: 296 [2020-08-18 23:32:15,933 INFO L226 Difference]: Without dead ends: 224 [2020-08-18 23:32:15,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:32:15,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-18 23:32:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2020-08-18 23:32:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-18 23:32:15,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-08-18 23:32:15,953 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 57 [2020-08-18 23:32:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:15,953 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-08-18 23:32:15,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:32:15,953 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-08-18 23:32:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 23:32:15,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:15,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:15,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 23:32:15,955 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:15,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:15,956 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-08-18 23:32:15,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:15,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957836690] [2020-08-18 23:32:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:32:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957836690] [2020-08-18 23:32:16,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:32:16,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505369414] [2020-08-18 23:32:16,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:32:16,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:32:16,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:32:16,220 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 11 states. [2020-08-18 23:32:17,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:17,177 INFO L93 Difference]: Finished difference Result 232 states and 299 transitions. [2020-08-18 23:32:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:32:17,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-18 23:32:17,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:17,180 INFO L225 Difference]: With dead ends: 232 [2020-08-18 23:32:17,180 INFO L226 Difference]: Without dead ends: 225 [2020-08-18 23:32:17,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:32:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-18 23:32:17,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2020-08-18 23:32:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-08-18 23:32:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2020-08-18 23:32:17,199 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 57 [2020-08-18 23:32:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:17,199 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2020-08-18 23:32:17,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:32:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2020-08-18 23:32:17,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 23:32:17,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:17,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:17,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 23:32:17,201 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:17,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:17,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-08-18 23:32:17,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:17,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488550470] [2020-08-18 23:32:17,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:32:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 23:32:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:32:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:17,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488550470] [2020-08-18 23:32:17,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:17,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:32:17,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960940342] [2020-08-18 23:32:17,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:32:17,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:17,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:32:17,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:32:17,385 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand 8 states. [2020-08-18 23:32:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:18,027 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-08-18 23:32:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 23:32:18,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-08-18 23:32:18,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:18,030 INFO L225 Difference]: With dead ends: 258 [2020-08-18 23:32:18,030 INFO L226 Difference]: Without dead ends: 214 [2020-08-18 23:32:18,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:32:18,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-18 23:32:18,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-08-18 23:32:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-18 23:32:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 274 transitions. [2020-08-18 23:32:18,048 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 274 transitions. Word has length 60 [2020-08-18 23:32:18,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:18,048 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 274 transitions. [2020-08-18 23:32:18,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:32:18,048 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 274 transitions. [2020-08-18 23:32:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 23:32:18,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:18,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:18,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 23:32:18,050 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash -930292561, now seen corresponding path program 1 times [2020-08-18 23:32:18,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:18,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015465129] [2020-08-18 23:32:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:18,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 23:32:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:18,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:18,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:32:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:18,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015465129] [2020-08-18 23:32:18,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:18,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 23:32:18,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694631469] [2020-08-18 23:32:18,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 23:32:18,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:18,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 23:32:18,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:32:18,323 INFO L87 Difference]: Start difference. First operand 214 states and 274 transitions. Second operand 15 states. [2020-08-18 23:32:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:19,597 INFO L93 Difference]: Finished difference Result 226 states and 286 transitions. [2020-08-18 23:32:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:32:19,598 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-08-18 23:32:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:19,599 INFO L225 Difference]: With dead ends: 226 [2020-08-18 23:32:19,599 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 23:32:19,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:32:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 23:32:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-08-18 23:32:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-18 23:32:19,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2020-08-18 23:32:19,618 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 61 [2020-08-18 23:32:19,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:19,618 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2020-08-18 23:32:19,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 23:32:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2020-08-18 23:32:19,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 23:32:19,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:19,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:19,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 23:32:19,621 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:19,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:19,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-08-18 23:32:19,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:19,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903699627] [2020-08-18 23:32:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:19,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:19,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:19,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:32:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-18 23:32:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:19,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-18 23:32:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:19,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903699627] [2020-08-18 23:32:19,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:19,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 23:32:19,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305347021] [2020-08-18 23:32:19,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 23:32:19,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:19,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 23:32:19,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:32:19,954 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand 15 states. [2020-08-18 23:32:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:20,753 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2020-08-18 23:32:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:32:20,754 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-08-18 23:32:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:20,755 INFO L225 Difference]: With dead ends: 200 [2020-08-18 23:32:20,755 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 23:32:20,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:32:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 23:32:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-08-18 23:32:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-18 23:32:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 232 transitions. [2020-08-18 23:32:20,775 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 232 transitions. Word has length 56 [2020-08-18 23:32:20,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:20,776 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 232 transitions. [2020-08-18 23:32:20,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 23:32:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 232 transitions. [2020-08-18 23:32:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-18 23:32:20,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:20,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:20,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 23:32:20,777 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:20,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:20,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-08-18 23:32:20,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:20,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777846223] [2020-08-18 23:32:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:32:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:32:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:21,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777846223] [2020-08-18 23:32:21,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:21,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:32:21,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572282776] [2020-08-18 23:32:21,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:32:21,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:21,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:32:21,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:32:21,109 INFO L87 Difference]: Start difference. First operand 186 states and 232 transitions. Second operand 13 states. [2020-08-18 23:32:22,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:22,257 INFO L93 Difference]: Finished difference Result 237 states and 286 transitions. [2020-08-18 23:32:22,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:32:22,257 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-08-18 23:32:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:22,259 INFO L225 Difference]: With dead ends: 237 [2020-08-18 23:32:22,259 INFO L226 Difference]: Without dead ends: 220 [2020-08-18 23:32:22,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-08-18 23:32:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-18 23:32:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-08-18 23:32:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-18 23:32:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2020-08-18 23:32:22,282 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 55 [2020-08-18 23:32:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:22,282 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2020-08-18 23:32:22,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:32:22,282 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2020-08-18 23:32:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-18 23:32:22,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:22,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:22,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 23:32:22,284 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:22,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:22,284 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-08-18 23:32:22,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:22,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251386942] [2020-08-18 23:32:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:22,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:22,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 23:32:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:32:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:22,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251386942] [2020-08-18 23:32:22,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:22,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 23:32:22,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761235859] [2020-08-18 23:32:22,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 23:32:22,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:22,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 23:32:22,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:32:22,554 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand 14 states. [2020-08-18 23:32:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:23,460 INFO L93 Difference]: Finished difference Result 206 states and 253 transitions. [2020-08-18 23:32:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:32:23,460 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-08-18 23:32:23,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:23,462 INFO L225 Difference]: With dead ends: 206 [2020-08-18 23:32:23,462 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 23:32:23,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-08-18 23:32:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 23:32:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-08-18 23:32:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-18 23:32:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2020-08-18 23:32:23,483 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 55 [2020-08-18 23:32:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:23,484 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2020-08-18 23:32:23,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 23:32:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2020-08-18 23:32:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 23:32:23,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:23,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:23,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 23:32:23,486 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:23,487 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-08-18 23:32:23,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:23,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947552888] [2020-08-18 23:32:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:32:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:32:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:32:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:23,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947552888] [2020-08-18 23:32:23,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:23,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 23:32:23,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470161458] [2020-08-18 23:32:23,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:32:23,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:23,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:32:23,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:32:23,715 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand 10 states. [2020-08-18 23:32:24,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:24,069 INFO L93 Difference]: Finished difference Result 204 states and 235 transitions. [2020-08-18 23:32:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:32:24,069 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-08-18 23:32:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:24,070 INFO L225 Difference]: With dead ends: 204 [2020-08-18 23:32:24,071 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 23:32:24,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:32:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 23:32:24,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-08-18 23:32:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-18 23:32:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2020-08-18 23:32:24,087 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 58 [2020-08-18 23:32:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:24,088 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2020-08-18 23:32:24,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:32:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2020-08-18 23:32:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 23:32:24,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:24,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:24,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 23:32:24,090 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:24,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-08-18 23:32:24,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:24,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41423883] [2020-08-18 23:32:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:32:24,114 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:32:24,115 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:32:24,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 23:32:24,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:32:24 BoogieIcfgContainer [2020-08-18 23:32:24,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:32:24,156 INFO L168 Benchmark]: Toolchain (without parser) took 27545.31 ms. Allocated memory was 140.5 MB in the beginning and 522.7 MB in the end (delta: 382.2 MB). Free memory was 103.4 MB in the beginning and 250.6 MB in the end (delta: -147.2 MB). Peak memory consumption was 235.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:32:24,157 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:32:24,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.12 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 176.7 MB in the end (delta: -73.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:32:24,158 INFO L168 Benchmark]: Boogie Preprocessor took 68.34 ms. Allocated memory is still 203.4 MB. Free memory was 176.7 MB in the beginning and 172.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-08-18 23:32:24,159 INFO L168 Benchmark]: RCFGBuilder took 930.47 ms. Allocated memory is still 203.4 MB. Free memory was 172.9 MB in the beginning and 102.2 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2020-08-18 23:32:24,159 INFO L168 Benchmark]: TraceAbstraction took 25946.92 ms. Allocated memory was 203.4 MB in the beginning and 522.7 MB in the end (delta: 319.3 MB). Free memory was 101.6 MB in the beginning and 250.6 MB in the end (delta: -149.0 MB). Peak memory consumption was 170.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:32:24,162 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 594.12 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 176.7 MB in the end (delta: -73.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.34 ms. Allocated memory is still 203.4 MB. Free memory was 176.7 MB in the beginning and 172.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 930.47 ms. Allocated memory is still 203.4 MB. Free memory was 172.9 MB in the beginning and 102.2 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25946.92 ms. Allocated memory was 203.4 MB in the beginning and 522.7 MB in the end (delta: 319.3 MB). Free memory was 101.6 MB in the beginning and 250.6 MB in the end (delta: -149.0 MB). Peak memory consumption was 170.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; [L292] int status ; [L293] int irp = __VERIFIER_nondet_int() ; [L294] int pirp ; [L295] int pirp__IoStatus__Status ; [L296] int irp_choice = __VERIFIER_nondet_int() ; [L297] int devobj = __VERIFIER_nondet_int() ; [L298] int __cil_tmp8 ; [L300] KernelMode = 0 [L301] Executive = 0 [L302] DevicePowerState = 1 [L303] s = 0 [L304] UNLOADED = 0 [L305] NP = 0 [L306] DC = 0 [L307] SKIP1 = 0 [L308] SKIP2 = 0 [L309] MPR1 = 0 [L310] MPR3 = 0 [L311] IPC = 0 [L312] pended = 0 [L313] compFptr = 0 [L314] compRegistered = 0 [L315] lowerDriverReturn = 0 [L316] setEventCalled = 0 [L317] customIrp = 0 [L318] myStatus = 0 [L322] status = 0 [L323] pirp = irp [L324] CALL _BLAST_init() [L59] UNLOADED = 0 [L60] NP = 1 [L61] DC = 2 [L62] SKIP1 = 3 [L63] SKIP2 = 4 [L64] MPR1 = 5 [L65] MPR3 = 6 [L66] IPC = 7 [L67] s = UNLOADED [L68] pended = 0 [L69] compFptr = 0 [L70] compRegistered = 0 [L71] lowerDriverReturn = 0 [L72] setEventCalled = 0 [L73] customIrp = 0 [L324] RET _BLAST_init() [L326] COND TRUE status >= 0 [L327] s = NP [L328] customIrp = 0 [L329] setEventCalled = customIrp [L330] lowerDriverReturn = setEventCalled [L331] compRegistered = lowerDriverReturn [L332] pended = compRegistered [L333] pirp__IoStatus__Status = 0 [L334] myStatus = 0 [L335] COND FALSE !(irp_choice == 0) [L340] CALL stub_driver_init() [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 [L340] RET stub_driver_init() [L343] COND FALSE !(status < 0) [L347] int tmp_ndt_1; [L348] tmp_ndt_1 = __VERIFIER_nondet_int() [L349] COND FALSE !(tmp_ndt_1 == 0) [L352] int tmp_ndt_2; [L353] tmp_ndt_2 = __VERIFIER_nondet_int() [L354] COND FALSE !(tmp_ndt_2 == 1) [L357] int tmp_ndt_3; [L358] tmp_ndt_3 = __VERIFIER_nondet_int() [L359] COND TRUE tmp_ndt_3 == 3 [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) [L78] int devExt ; [L79] int irpStack ; [L80] int status ; [L81] int event = __VERIFIER_nondet_int() ; [L82] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L83] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L84] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L85] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L86] int devExt__Started ; [L87] int devExt__Removed ; [L88] int devExt__SurpriseRemoved ; [L89] int Irp__IoStatus__Status ; [L90] int Irp__IoStatus__Information ; [L91] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L92] int irpSp ; [L93] int nextIrpSp ; [L94] int nextIrpSp__Control ; [L95] int irpSp___0 ; [L96] int irpSp__Context ; [L97] int irpSp__Control ; [L98] long __cil_tmp23 ; [L101] status = 0 [L102] devExt = DeviceObject__DeviceExtension [L103] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L104] COND FALSE !(irpStack__MinorFunction == 0) [L107] COND FALSE !(irpStack__MinorFunction == 23) [L110] COND TRUE irpStack__MinorFunction == 2 [L234] devExt__Removed = 1 [L235] COND TRUE s == NP [L236] s = SKIP1 [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; [L487] COND FALSE !(\read(compRegistered)) [L500] int tmp_ndt_6; [L501] tmp_ndt_6 = __VERIFIER_nondet_int() [L502] COND FALSE !(tmp_ndt_6 == 0) [L505] int tmp_ndt_7; [L506] tmp_ndt_7 = __VERIFIER_nondet_int() [L507] COND TRUE tmp_ndt_7 == 1 [L516] returnVal2 = -1073741823 [L526] COND FALSE !(s == NP) [L530] COND FALSE !(s == MPR1) [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 [L549] return (returnVal2); [L245] RET IofCallDriver(devExt__TopOfStack, Irp) [L246] status = 0 [L288] return (status); [L386] RET, EXPR KbFilter_PnP(devobj, pirp) [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) [L418] COND FALSE !(pended == 1) [L426] COND TRUE s != UNLOADED [L427] COND TRUE status != -1 [L428] COND FALSE !(s != SKIP2) [L438] COND FALSE !(pended == 1) [L445] COND FALSE !(s == DC) [L450] COND TRUE status != lowerDriverReturn [L451] CALL errorFn() [L1011] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.8s, OverallIterations: 21, TraceHistogramMax: 1, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4634 SDtfs, 6117 SDslu, 7841 SDs, 0 SdLazy, 16057 SolverSat, 1266 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 275 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1029 NumberOfCodeBlocks, 1029 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 953 ConstructedInterpolants, 0 QuantifiedInterpolants, 212124 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...