/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:49:42,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:49:42,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:49:42,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:49:42,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:49:42,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:49:42,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:49:42,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:49:42,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:49:42,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:49:42,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:49:42,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:49:42,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:49:42,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:49:42,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:49:42,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:49:42,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:49:42,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:49:42,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:49:42,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:49:42,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:49:42,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:49:42,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:49:42,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:49:42,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:49:42,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:49:42,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:49:42,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:49:42,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:49:42,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:49:42,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:49:42,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:49:42,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:49:42,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:49:42,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:49:42,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:49:42,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:49:42,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:49:42,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:49:42,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:49:42,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:49:42,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:49:42,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:49:42,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:49:42,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:49:42,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:49:42,320 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:49:42,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:49:42,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:49:42,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:49:42,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:49:42,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:49:42,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:49:42,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:49:42,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:49:42,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:49:42,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:49:42,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:49:42,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:49:42,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:49:42,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:49:42,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:49:42,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:49:42,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:49:42,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:49:42,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:49:42,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:49:42,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:49:42,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:49:42,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:49:42,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:49:42,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:49:42,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:49:42,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:49:42,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:49:42,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:49:42,833 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:49:42,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-09-24 23:49:42,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cc4e07ba/a8e94a39bb714b51a5adc985f57fc283/FLAG67a8499ae [2020-09-24 23:49:43,485 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:49:43,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-09-24 23:49:43,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cc4e07ba/a8e94a39bb714b51a5adc985f57fc283/FLAG67a8499ae [2020-09-24 23:49:43,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cc4e07ba/a8e94a39bb714b51a5adc985f57fc283 [2020-09-24 23:49:43,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:49:43,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:49:43,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:49:43,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:49:43,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:49:43,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:49:43" (1/1) ... [2020-09-24 23:49:43,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4241192c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:43, skipping insertion in model container [2020-09-24 23:49:43,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:49:43" (1/1) ... [2020-09-24 23:49:43,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:49:43,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:49:44,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:49:44,280 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:49:44,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:49:44,481 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:49:44,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44 WrapperNode [2020-09-24 23:49:44,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:49:44,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:49:44,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:49:44,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:49:44,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44" (1/1) ... [2020-09-24 23:49:44,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44" (1/1) ... [2020-09-24 23:49:44,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44" (1/1) ... [2020-09-24 23:49:44,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44" (1/1) ... [2020-09-24 23:49:44,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44" (1/1) ... [2020-09-24 23:49:44,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44" (1/1) ... [2020-09-24 23:49:44,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44" (1/1) ... [2020-09-24 23:49:44,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:49:44,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:49:44,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:49:44,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:49:44,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:49:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:49:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:49:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-09-24 23:49:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-09-24 23:49:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-09-24 23:49:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:49:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-09-24 23:49:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-09-24 23:49:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-09-24 23:49:44,630 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-09-24 23:49:44,630 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-09-24 23:49:44,630 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-09-24 23:49:44,630 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-09-24 23:49:44,630 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-09-24 23:49:44,631 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-09-24 23:49:44,631 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-09-24 23:49:44,631 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-09-24 23:49:44,631 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-09-24 23:49:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:49:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 23:49:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:49:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 23:49:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-09-24 23:49:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-09-24 23:49:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-09-24 23:49:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-09-24 23:49:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-09-24 23:49:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-09-24 23:49:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-09-24 23:49:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-09-24 23:49:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-09-24 23:49:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-09-24 23:49:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-09-24 23:49:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-09-24 23:49:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-09-24 23:49:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-09-24 23:49:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:49:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-09-24 23:49:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:49:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:49:44,943 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 23:49:45,017 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-09-24 23:49:45,017 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-09-24 23:49:45,070 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 23:49:45,263 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-09-24 23:49:45,263 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-09-24 23:49:45,265 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 23:49:45,326 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-24 23:49:45,326 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-24 23:49:45,333 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 23:49:45,385 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-24 23:49:45,385 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-24 23:49:45,554 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 23:49:45,576 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-09-24 23:49:45,576 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-09-24 23:49:45,628 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 23:49:45,755 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-09-24 23:49:45,755 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-09-24 23:49:45,779 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:49:45,779 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:49:45,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:49:45 BoogieIcfgContainer [2020-09-24 23:49:45,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:49:45,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:49:45,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:49:45,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:49:45,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:49:43" (1/3) ... [2020-09-24 23:49:45,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce6a4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:49:45, skipping insertion in model container [2020-09-24 23:49:45,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:49:44" (2/3) ... [2020-09-24 23:49:45,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce6a4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:49:45, skipping insertion in model container [2020-09-24 23:49:45,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:49:45" (3/3) ... [2020-09-24 23:49:45,799 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.c [2020-09-24 23:49:45,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:49:45,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:49:45,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:49:45,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:49:45,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:49:45,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:49:45,888 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:49:45,888 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:49:45,888 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:49:45,888 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:49:45,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:49:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states. [2020-09-24 23:49:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 23:49:45,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:45,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:45,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash 337662663, now seen corresponding path program 1 times [2020-09-24 23:49:45,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:45,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33267828] [2020-09-24 23:49:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:46,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:47,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:47,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 23:49:47,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 23:49:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-09-24 23:49:47,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 23:49:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:49:47,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:49:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:47,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:47,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:49:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:49:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:49:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:48,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:48,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:48,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 23:49:48,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:49:48,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 23:49:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:49:48,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33267828] [2020-09-24 23:49:48,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:49:48,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:49:48,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273015726] [2020-09-24 23:49:48,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:49:48,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:48,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:49:48,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:49:48,179 INFO L87 Difference]: Start difference. First operand 666 states. Second operand 5 states. [2020-09-24 23:49:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:50,289 INFO L93 Difference]: Finished difference Result 1035 states and 1244 transitions. [2020-09-24 23:49:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:49:50,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-24 23:49:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:50,326 INFO L225 Difference]: With dead ends: 1035 [2020-09-24 23:49:50,327 INFO L226 Difference]: Without dead ends: 706 [2020-09-24 23:49:50,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:49:50,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-24 23:49:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 652. [2020-09-24 23:49:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-09-24 23:49:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 746 transitions. [2020-09-24 23:49:50,446 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 746 transitions. Word has length 85 [2020-09-24 23:49:50,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:50,447 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 746 transitions. [2020-09-24 23:49:50,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:49:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 746 transitions. [2020-09-24 23:49:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 23:49:50,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:50,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:50,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:49:50,454 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:50,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1711200696, now seen corresponding path program 1 times [2020-09-24 23:49:50,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:50,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650922485] [2020-09-24 23:49:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 23:49:51,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-09-24 23:49:51,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:49:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-24 23:49:51,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:49:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:49:51,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:49:51,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:51,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:51,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:49:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:51,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:49:51,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:49:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:51,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:51,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:51,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:49:51,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:49:51,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 23:49:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:49:51,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650922485] [2020-09-24 23:49:51,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:49:51,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:49:51,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844617285] [2020-09-24 23:49:51,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:49:51,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:51,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:49:51,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:49:51,255 INFO L87 Difference]: Start difference. First operand 652 states and 746 transitions. Second operand 6 states. [2020-09-24 23:49:53,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:53,396 INFO L93 Difference]: Finished difference Result 967 states and 1119 transitions. [2020-09-24 23:49:53,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:49:53,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-24 23:49:53,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:53,404 INFO L225 Difference]: With dead ends: 967 [2020-09-24 23:49:53,404 INFO L226 Difference]: Without dead ends: 879 [2020-09-24 23:49:53,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:49:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-09-24 23:49:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 803. [2020-09-24 23:49:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-09-24 23:49:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 913 transitions. [2020-09-24 23:49:53,485 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 913 transitions. Word has length 136 [2020-09-24 23:49:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:53,487 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 913 transitions. [2020-09-24 23:49:53,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:49:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 913 transitions. [2020-09-24 23:49:53,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 23:49:53,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:53,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:53,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:49:53,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:53,507 INFO L82 PathProgramCache]: Analyzing trace with hash -472111805, now seen corresponding path program 1 times [2020-09-24 23:49:53,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:53,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067555424] [2020-09-24 23:49:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:53,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:53,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 23:49:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-24 23:49:53,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:49:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 23:49:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 23:49:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:54,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:54,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:49:54,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:54,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:49:54,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:54,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:54,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:49:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:54,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:54,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:54,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:54,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:49:54,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:54,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:54,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:49:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:54,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:54,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:49:54,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:54,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:49:54,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:49:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:49:54,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:49:54,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067555424] [2020-09-24 23:49:54,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:49:54,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:49:54,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067084892] [2020-09-24 23:49:54,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:49:54,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:54,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:49:54,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:49:54,230 INFO L87 Difference]: Start difference. First operand 803 states and 913 transitions. Second operand 6 states. [2020-09-24 23:49:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:55,870 INFO L93 Difference]: Finished difference Result 1124 states and 1281 transitions. [2020-09-24 23:49:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:49:55,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-24 23:49:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:55,877 INFO L225 Difference]: With dead ends: 1124 [2020-09-24 23:49:55,877 INFO L226 Difference]: Without dead ends: 901 [2020-09-24 23:49:55,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:49:55,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-09-24 23:49:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 878. [2020-09-24 23:49:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-24 23:49:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 999 transitions. [2020-09-24 23:49:55,926 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 999 transitions. Word has length 158 [2020-09-24 23:49:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:55,927 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 999 transitions. [2020-09-24 23:49:55,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:49:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 999 transitions. [2020-09-24 23:49:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 23:49:55,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:55,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:55,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:49:55,931 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:55,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:55,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1225477396, now seen corresponding path program 1 times [2020-09-24 23:49:55,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:55,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730418859] [2020-09-24 23:49:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:56,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:56,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 23:49:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-24 23:49:56,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:49:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-09-24 23:49:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:49:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:56,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:49:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:56,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:56,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:56,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:49:56,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:56,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:49:56,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:56,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:49:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:56,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:56,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:49:56,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:49:56,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:49:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:49:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:56,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:49:56,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:49:56,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:49:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:49:56,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:49:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:49:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:49:56,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:49:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:49:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:49:56,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730418859] [2020-09-24 23:49:56,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:49:56,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:49:56,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921069007] [2020-09-24 23:49:56,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:49:56,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:49:56,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:49:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:49:56,645 INFO L87 Difference]: Start difference. First operand 878 states and 999 transitions. Second operand 6 states. [2020-09-24 23:49:58,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:49:58,478 INFO L93 Difference]: Finished difference Result 882 states and 1002 transitions. [2020-09-24 23:49:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:49:58,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-24 23:49:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:49:58,488 INFO L225 Difference]: With dead ends: 882 [2020-09-24 23:49:58,488 INFO L226 Difference]: Without dead ends: 878 [2020-09-24 23:49:58,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:49:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-09-24 23:49:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 877. [2020-09-24 23:49:58,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-09-24 23:49:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 996 transitions. [2020-09-24 23:49:58,534 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 996 transitions. Word has length 162 [2020-09-24 23:49:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:49:58,535 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 996 transitions. [2020-09-24 23:49:58,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:49:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 996 transitions. [2020-09-24 23:49:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 23:49:58,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:49:58,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:49:58,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:49:58,540 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:49:58,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:49:58,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1858696707, now seen corresponding path program 1 times [2020-09-24 23:49:58,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:49:58,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468465206] [2020-09-24 23:49:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:49:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:49:58,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:49:59,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:01,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:01,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 23:50:01,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:50:01,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3185 [2020-09-24 23:50:01,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:01,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:50:01,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 23:50:01,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 23:50:01,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:01,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:01,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:01,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:50:01,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:02,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:02,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:02,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:02,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:02,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 23:50:02,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:50:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:50:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:02,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:02,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:02,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:02,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:02,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:02,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:50:02,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:50:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:02,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 23:50:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:02,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:02,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:02,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 23:50:02,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:02,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 23:50:02,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:50:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 23:50:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 23:50:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:02,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:50:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:02,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:02,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 23:50:02,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:02,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-24 23:50:02,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:50:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:50:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 23:50:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:02,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:02,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:02,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 23:50:02,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:50:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:50:02,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:50:02,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:50:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:02,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468465206] [2020-09-24 23:50:02,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:02,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 23:50:02,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986450094] [2020-09-24 23:50:02,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 23:50:02,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:02,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 23:50:02,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-24 23:50:02,825 INFO L87 Difference]: Start difference. First operand 877 states and 996 transitions. Second operand 15 states. [2020-09-24 23:50:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:05,859 INFO L93 Difference]: Finished difference Result 992 states and 1121 transitions. [2020-09-24 23:50:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 23:50:05,860 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 187 [2020-09-24 23:50:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:05,866 INFO L225 Difference]: With dead ends: 992 [2020-09-24 23:50:05,866 INFO L226 Difference]: Without dead ends: 917 [2020-09-24 23:50:05,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2020-09-24 23:50:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-09-24 23:50:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 882. [2020-09-24 23:50:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-09-24 23:50:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 997 transitions. [2020-09-24 23:50:05,918 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 997 transitions. Word has length 187 [2020-09-24 23:50:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:05,918 INFO L479 AbstractCegarLoop]: Abstraction has 882 states and 997 transitions. [2020-09-24 23:50:05,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 23:50:05,918 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 997 transitions. [2020-09-24 23:50:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 23:50:05,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:05,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:05,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:50:05,923 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:05,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1599746884, now seen corresponding path program 1 times [2020-09-24 23:50:05,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:05,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19835618] [2020-09-24 23:50:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:06,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:06,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:06,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 23:50:06,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:50:06,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-09-24 23:50:06,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-24 23:50:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 23:50:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:06,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:06,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:06,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:06,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:50:06,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:06,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:06,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:06,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:50:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:06,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:06,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:06,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:06,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:06,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:06,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:50:06,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 23:50:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 23:50:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:06,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:06,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:50:06,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:06,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 23:50:06,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:06,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:06,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:06,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 23:50:06,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 23:50:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:06,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:06,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 23:50:06,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:50:06,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:06,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:06,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 23:50:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:06,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:06,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:50:06,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:50:06,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:06,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:07,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19835618] [2020-09-24 23:50:07,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:07,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:50:07,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780743834] [2020-09-24 23:50:07,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:50:07,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:07,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:50:07,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:50:07,018 INFO L87 Difference]: Start difference. First operand 882 states and 997 transitions. Second operand 8 states. [2020-09-24 23:50:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:08,565 INFO L93 Difference]: Finished difference Result 900 states and 1018 transitions. [2020-09-24 23:50:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:50:08,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-09-24 23:50:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:08,570 INFO L225 Difference]: With dead ends: 900 [2020-09-24 23:50:08,570 INFO L226 Difference]: Without dead ends: 364 [2020-09-24 23:50:08,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:50:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-09-24 23:50:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 307. [2020-09-24 23:50:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-09-24 23:50:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 324 transitions. [2020-09-24 23:50:08,586 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 324 transitions. Word has length 189 [2020-09-24 23:50:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:08,587 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 324 transitions. [2020-09-24 23:50:08,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:50:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 324 transitions. [2020-09-24 23:50:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 23:50:08,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:08,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:08,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:50:08,591 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:08,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:08,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1820316512, now seen corresponding path program 1 times [2020-09-24 23:50:08,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:08,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819936394] [2020-09-24 23:50:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:08,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:09,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:09,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-24 23:50:09,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:50:09,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-09-24 23:50:09,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 23:50:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:50:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:09,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:09,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:09,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:09,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:50:09,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:09,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:09,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:09,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:09,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:09,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:50:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:09,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:09,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:09,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:09,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:09,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:09,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:50:09,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 23:50:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:09,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:09,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:09,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:50:09,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:50:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:50:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:09,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819936394] [2020-09-24 23:50:09,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:09,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:50:09,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935033621] [2020-09-24 23:50:09,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:50:09,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:09,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:50:09,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:50:09,823 INFO L87 Difference]: Start difference. First operand 307 states and 324 transitions. Second operand 8 states. [2020-09-24 23:50:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:11,006 INFO L93 Difference]: Finished difference Result 368 states and 392 transitions. [2020-09-24 23:50:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 23:50:11,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-09-24 23:50:11,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:11,011 INFO L225 Difference]: With dead ends: 368 [2020-09-24 23:50:11,011 INFO L226 Difference]: Without dead ends: 307 [2020-09-24 23:50:11,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:50:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-24 23:50:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2020-09-24 23:50:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-09-24 23:50:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 323 transitions. [2020-09-24 23:50:11,085 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 323 transitions. Word has length 197 [2020-09-24 23:50:11,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:11,085 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 323 transitions. [2020-09-24 23:50:11,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:50:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 323 transitions. [2020-09-24 23:50:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 23:50:11,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:11,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:11,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:50:11,089 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:11,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:11,090 INFO L82 PathProgramCache]: Analyzing trace with hash 667967814, now seen corresponding path program 1 times [2020-09-24 23:50:11,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:11,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984681298] [2020-09-24 23:50:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:11,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:11,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 23:50:11,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-24 23:50:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-09-24 23:50:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:50:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:11,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:11,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:11,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:11,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:50:11,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:11,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:11,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:11,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:50:11,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:11,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:11,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:11,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:11,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:11,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:11,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:11,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:50:11,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:11,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:11,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-24 23:50:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:50:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:50:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:50:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:11,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:11,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:50:11,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:11,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:50:11,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:11,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-24 23:50:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:11,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:11,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:11,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:50:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:50:11,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 23:50:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:11,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984681298] [2020-09-24 23:50:11,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:11,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:50:11,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840787237] [2020-09-24 23:50:11,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:50:11,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:11,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:50:11,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:50:11,711 INFO L87 Difference]: Start difference. First operand 307 states and 323 transitions. Second operand 8 states. [2020-09-24 23:50:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:12,295 INFO L93 Difference]: Finished difference Result 353 states and 374 transitions. [2020-09-24 23:50:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:50:12,297 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-24 23:50:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:12,301 INFO L225 Difference]: With dead ends: 353 [2020-09-24 23:50:12,301 INFO L226 Difference]: Without dead ends: 304 [2020-09-24 23:50:12,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:50:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-24 23:50:12,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2020-09-24 23:50:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-09-24 23:50:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 317 transitions. [2020-09-24 23:50:12,324 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 317 transitions. Word has length 213 [2020-09-24 23:50:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:12,325 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 317 transitions. [2020-09-24 23:50:12,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:50:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 317 transitions. [2020-09-24 23:50:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 23:50:12,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:12,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:12,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:50:12,329 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:12,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1190108144, now seen corresponding path program 1 times [2020-09-24 23:50:12,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:12,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687594919] [2020-09-24 23:50:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:12,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:15,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:15,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-24 23:50:15,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:50:15,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2642 [2020-09-24 23:50:15,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:50:15,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-09-24 23:50:15,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:50:15,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:15,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:15,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:15,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:15,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:50:15,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:15,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:15,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:15,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:15,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:15,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:50:15,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:15,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:15,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:15,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:15,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:15,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:50:15,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:15,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:15,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 23:50:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:15,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:15,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 23:50:15,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 23:50:15,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:50:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 23:50:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:50:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:50:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:15,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:15,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:50:15,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 23:50:15,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:50:15,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:15,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:50:15,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:50:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:15,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:15,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:50:15,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:50:15,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:15,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687594919] [2020-09-24 23:50:15,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:15,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 23:50:15,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923301103] [2020-09-24 23:50:15,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:50:15,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:15,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:50:15,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:50:15,472 INFO L87 Difference]: Start difference. First operand 303 states and 317 transitions. Second operand 11 states. [2020-09-24 23:50:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:16,118 INFO L93 Difference]: Finished difference Result 350 states and 369 transitions. [2020-09-24 23:50:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:50:16,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 224 [2020-09-24 23:50:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:16,121 INFO L225 Difference]: With dead ends: 350 [2020-09-24 23:50:16,121 INFO L226 Difference]: Without dead ends: 289 [2020-09-24 23:50:16,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:50:16,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-24 23:50:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-09-24 23:50:16,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-09-24 23:50:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 300 transitions. [2020-09-24 23:50:16,137 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 300 transitions. Word has length 224 [2020-09-24 23:50:16,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:16,137 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 300 transitions. [2020-09-24 23:50:16,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:50:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 300 transitions. [2020-09-24 23:50:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 23:50:16,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:16,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:16,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 23:50:16,144 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:16,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1259094098, now seen corresponding path program 1 times [2020-09-24 23:50:16,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:16,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534333668] [2020-09-24 23:50:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:16,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:17,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:17,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-24 23:50:17,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:50:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-09-24 23:50:17,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:50:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 23:50:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-24 23:50:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:17,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:17,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:17,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:17,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:17,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:50:17,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:17,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:17,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:17,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:17,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:17,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 23:50:17,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:50:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:17,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:50:17,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:17,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:17,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:17,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:17,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:17,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:50:17,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:17,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:50:17,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:17,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 23:50:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:18,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:18,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 23:50:18,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:18,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 23:50:18,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:50:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 23:50:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:50:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:18,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:50:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:18,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:18,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:50:18,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:50:18,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:18,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:18,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:50:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:18,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:18,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:18,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:50:18,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:50:18,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:18,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:18,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:18,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 23:50:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:18,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:18,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:18,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:50:18,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:50:18,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 23:50:18,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:18,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534333668] [2020-09-24 23:50:18,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:18,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 23:50:18,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140254100] [2020-09-24 23:50:18,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:50:18,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:18,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:50:18,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:50:18,206 INFO L87 Difference]: Start difference. First operand 289 states and 300 transitions. Second operand 12 states. [2020-09-24 23:50:19,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:19,264 INFO L93 Difference]: Finished difference Result 334 states and 350 transitions. [2020-09-24 23:50:19,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:50:19,265 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 229 [2020-09-24 23:50:19,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:19,268 INFO L225 Difference]: With dead ends: 334 [2020-09-24 23:50:19,268 INFO L226 Difference]: Without dead ends: 287 [2020-09-24 23:50:19,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-09-24 23:50:19,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-24 23:50:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-09-24 23:50:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-09-24 23:50:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 297 transitions. [2020-09-24 23:50:19,282 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 297 transitions. Word has length 229 [2020-09-24 23:50:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:19,283 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 297 transitions. [2020-09-24 23:50:19,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 23:50:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 297 transitions. [2020-09-24 23:50:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-24 23:50:19,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:19,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:19,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 23:50:19,286 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:19,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1538319019, now seen corresponding path program 1 times [2020-09-24 23:50:19,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:19,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286759916] [2020-09-24 23:50:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:19,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:19,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:20,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 23:50:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:50:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1353 [2020-09-24 23:50:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:50:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-09-24 23:50:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 23:50:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:20,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:20,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:20,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:20,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:20,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:50:20,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:20,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:20,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:20,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:20,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:20,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:50:20,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:20,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:20,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:20,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:20,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:20,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:20,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:50:20,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:20,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:20,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:20,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:20,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 23:50:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:20,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:20,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:20,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:50:20,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:50:20,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 23:50:20,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:50:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 23:50:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:50:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:21,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:21,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:50:21,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:21,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:50:21,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:21,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:21,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:21,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:50:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:21,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:50:21,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:21,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:50:21,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:21,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:21,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:21,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 23:50:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:21,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:21,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:21,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:50:21,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:50:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:21,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286759916] [2020-09-24 23:50:21,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:21,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 23:50:21,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784682944] [2020-09-24 23:50:21,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:50:21,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:21,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:50:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:50:21,163 INFO L87 Difference]: Start difference. First operand 287 states and 297 transitions. Second operand 12 states. [2020-09-24 23:50:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:22,022 INFO L93 Difference]: Finished difference Result 348 states and 364 transitions. [2020-09-24 23:50:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:50:22,023 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 231 [2020-09-24 23:50:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:22,026 INFO L225 Difference]: With dead ends: 348 [2020-09-24 23:50:22,026 INFO L226 Difference]: Without dead ends: 301 [2020-09-24 23:50:22,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:50:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-09-24 23:50:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 290. [2020-09-24 23:50:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-09-24 23:50:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 300 transitions. [2020-09-24 23:50:22,040 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 300 transitions. Word has length 231 [2020-09-24 23:50:22,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:22,041 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 300 transitions. [2020-09-24 23:50:22,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 23:50:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 300 transitions. [2020-09-24 23:50:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-24 23:50:22,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:22,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:22,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 23:50:22,045 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:22,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1887644435, now seen corresponding path program 1 times [2020-09-24 23:50:22,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:22,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021312248] [2020-09-24 23:50:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:22,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:25,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:25,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 23:50:25,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:50:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3148 [2020-09-24 23:50:25,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:50:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 23:50:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-24 23:50:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:25,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:25,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:25,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:25,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:25,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:50:25,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:25,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:25,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:25,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:25,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:25,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:25,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:25,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:25,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 23:50:25,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:50:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:25,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:50:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:25,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:25,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:25,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:25,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:50:25,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:25,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:50:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:25,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 23:50:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:25,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:25,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:50:25,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:25,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 23:50:25,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:50:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 23:50:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:25,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:50:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:25,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:25,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:50:25,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:25,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:50:25,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:25,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:25,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:25,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:50:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:25,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:25,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:50:25,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:50:25,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:25,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 23:50:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:25,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:25,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:25,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:50:25,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:25,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:50:25,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:25,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021312248] [2020-09-24 23:50:25,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:25,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 23:50:25,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729843016] [2020-09-24 23:50:25,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:50:25,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:25,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:50:25,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:50:25,737 INFO L87 Difference]: Start difference. First operand 290 states and 300 transitions. Second operand 13 states. [2020-09-24 23:50:26,327 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-09-24 23:50:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:27,052 INFO L93 Difference]: Finished difference Result 312 states and 323 transitions. [2020-09-24 23:50:27,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 23:50:27,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 232 [2020-09-24 23:50:27,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:27,055 INFO L225 Difference]: With dead ends: 312 [2020-09-24 23:50:27,055 INFO L226 Difference]: Without dead ends: 283 [2020-09-24 23:50:27,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2020-09-24 23:50:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-09-24 23:50:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 268. [2020-09-24 23:50:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-24 23:50:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 275 transitions. [2020-09-24 23:50:27,068 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 275 transitions. Word has length 232 [2020-09-24 23:50:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:27,069 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 275 transitions. [2020-09-24 23:50:27,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:50:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 275 transitions. [2020-09-24 23:50:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 23:50:27,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:27,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:27,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 23:50:27,073 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:27,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2101071932, now seen corresponding path program 1 times [2020-09-24 23:50:27,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:27,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176278012] [2020-09-24 23:50:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:27,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:27,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:27,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-24 23:50:27,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:50:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-09-24 23:50:27,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:27,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:27,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-09-24 23:50:27,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:50:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:27,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:27,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:27,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:50:27,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:27,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:27,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:27,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:50:27,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:28,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:28,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:28,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:28,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:50:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:28,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 23:50:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:28,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:28,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 23:50:28,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 23:50:28,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-24 23:50:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:50:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:50:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:28,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:28,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:50:28,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:50:28,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:28,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:50:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:28,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:28,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:28,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:50:28,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:50:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:28,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 23:50:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:28,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:28,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:50:28,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:50:28,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:28,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:28,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:28,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176278012] [2020-09-24 23:50:28,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:28,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 23:50:28,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412009093] [2020-09-24 23:50:28,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:50:28,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:28,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:50:28,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:50:28,195 INFO L87 Difference]: Start difference. First operand 268 states and 275 transitions. Second operand 9 states. [2020-09-24 23:50:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:28,697 INFO L93 Difference]: Finished difference Result 320 states and 332 transitions. [2020-09-24 23:50:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:50:28,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 236 [2020-09-24 23:50:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:28,701 INFO L225 Difference]: With dead ends: 320 [2020-09-24 23:50:28,701 INFO L226 Difference]: Without dead ends: 267 [2020-09-24 23:50:28,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:50:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-24 23:50:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2020-09-24 23:50:28,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-24 23:50:28,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 273 transitions. [2020-09-24 23:50:28,713 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 273 transitions. Word has length 236 [2020-09-24 23:50:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:28,714 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 273 transitions. [2020-09-24 23:50:28,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:50:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 273 transitions. [2020-09-24 23:50:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 23:50:28,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:28,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:28,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 23:50:28,716 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:28,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:28,717 INFO L82 PathProgramCache]: Analyzing trace with hash -2094536828, now seen corresponding path program 1 times [2020-09-24 23:50:28,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:28,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573455931] [2020-09-24 23:50:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:29,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:29,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:29,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:29,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-24 23:50:29,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:50:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-09-24 23:50:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:50:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-09-24 23:50:29,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:50:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:29,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:29,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:29,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:29,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:29,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:50:29,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:29,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:29,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:29,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:29,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:29,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:29,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:29,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:50:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:30,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:30,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:30,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:30,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:30,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:50:30,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:30,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 23:50:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:30,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:30,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 23:50:30,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:50:30,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 23:50:30,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:50:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 23:50:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:50:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:30,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:50:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:50:30,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:50:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:30,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:30,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:50:30,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:50:30,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:30,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 23:50:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:30,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:30,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:50:30,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:50:30,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:30,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:30,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573455931] [2020-09-24 23:50:30,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:30,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 23:50:30,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629922946] [2020-09-24 23:50:30,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:50:30,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:30,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:50:30,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:50:30,290 INFO L87 Difference]: Start difference. First operand 267 states and 273 transitions. Second operand 13 states. [2020-09-24 23:50:31,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:31,148 INFO L93 Difference]: Finished difference Result 282 states and 289 transitions. [2020-09-24 23:50:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:50:31,148 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 236 [2020-09-24 23:50:31,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:31,151 INFO L225 Difference]: With dead ends: 282 [2020-09-24 23:50:31,151 INFO L226 Difference]: Without dead ends: 267 [2020-09-24 23:50:31,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:50:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-24 23:50:31,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2020-09-24 23:50:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-24 23:50:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 271 transitions. [2020-09-24 23:50:31,163 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 271 transitions. Word has length 236 [2020-09-24 23:50:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:31,164 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 271 transitions. [2020-09-24 23:50:31,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:50:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 271 transitions. [2020-09-24 23:50:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-24 23:50:31,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:31,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:50:31,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 23:50:31,166 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:31,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1531034922, now seen corresponding path program 1 times [2020-09-24 23:50:31,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:31,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240604541] [2020-09-24 23:50:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:31,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:31,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-24 23:50:31,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-24 23:50:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:50:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-09-24 23:50:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 23:50:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:31,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:31,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:50:31,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:50:31,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:31,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:31,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 23:50:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:31,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:31,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:31,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:50:31,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:50:31,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:31,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 23:50:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:31,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:50:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:50:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:31,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 23:50:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:31,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 23:50:31,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 23:50:31,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:50:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:50:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:31,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:31,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:50:31,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 23:50:31,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:31,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:50:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:50:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:31,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:31,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:50:31,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:31,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:50:31,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:50:31,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:50:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 23:50:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:31,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:50:31,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:31,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:50:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:50:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:50:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:50:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:31,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240604541] [2020-09-24 23:50:31,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:31,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 23:50:31,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924259005] [2020-09-24 23:50:31,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:50:31,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:31,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:50:31,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:50:31,979 INFO L87 Difference]: Start difference. First operand 267 states and 271 transitions. Second operand 9 states.