/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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:17:34,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:17:34,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:17:34,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:17:34,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:17:34,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:17:34,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:17:34,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:17:34,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:17:34,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:17:34,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:17:34,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:17:34,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:17:34,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:17:34,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:17:34,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:17:34,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:17:34,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:17:34,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:17:34,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:17:34,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:17:34,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:17:34,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:17:34,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:17:34,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:17:34,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:17:34,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:17:34,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:17:34,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:17:34,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:17:34,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:17:34,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:17:34,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:17:34,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:17:34,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:17:34,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:17:34,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:17:34,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:17:34,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:17:34,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:17:34,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:17:34,362 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 [2020-10-15 00:17:34,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:17:34,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:17:34,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:17:34,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:17:34,406 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:17:34,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:17:34,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:17:34,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:17:34,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:17:34,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:17:34,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:17:34,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:17:34,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:17:34,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:17:34,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:17:34,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:17:34,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:17:34,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:17:34,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:17:34,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:17:34,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:17:34,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:17:34,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:17:34,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:17:34,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:17:34,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:17:34,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:17:34,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:17:34,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:17:34,412 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 -> SequenceOfStatements 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:17:34,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:17:34,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:17:34,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:17:34,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:17:34,780 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:17:34,781 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-10-15 00:17:34,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/755564375/d3a1435f9ece4b3e908b8ce93489fe45/FLAG96a0d109a [2020-10-15 00:17:35,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:17:35,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-10-15 00:17:35,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/755564375/d3a1435f9ece4b3e908b8ce93489fe45/FLAG96a0d109a [2020-10-15 00:17:35,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/755564375/d3a1435f9ece4b3e908b8ce93489fe45 [2020-10-15 00:17:35,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:17:35,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:17:35,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:17:35,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:17:35,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:17:35,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:17:35" (1/1) ... [2020-10-15 00:17:35,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b255298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:35, skipping insertion in model container [2020-10-15 00:17:35,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:17:35" (1/1) ... [2020-10-15 00:17:35,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:17:35,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:17:36,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:17:36,054 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:17:36,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:17:36,257 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:17:36,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36 WrapperNode [2020-10-15 00:17:36,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:17:36,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:17:36,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:17:36,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:17:36,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36" (1/1) ... [2020-10-15 00:17:36,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36" (1/1) ... [2020-10-15 00:17:36,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36" (1/1) ... [2020-10-15 00:17:36,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36" (1/1) ... [2020-10-15 00:17:36,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36" (1/1) ... [2020-10-15 00:17:36,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36" (1/1) ... [2020-10-15 00:17:36,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36" (1/1) ... [2020-10-15 00:17:36,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:17:36,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:17:36,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:17:36,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:17:36,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36" (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 [2020-10-15 00:17:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:17:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:17:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-15 00:17:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-15 00:17:36,387 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-10-15 00:17:36,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:17:36,388 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-15 00:17:36,388 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-15 00:17:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-15 00:17:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-15 00:17:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-15 00:17:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-10-15 00:17:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-10-15 00:17:36,390 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-10-15 00:17:36,390 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-10-15 00:17:36,391 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-15 00:17:36,391 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-10-15 00:17:36,391 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-15 00:17:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:17:36,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 00:17:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 00:17:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 00:17:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-10-15 00:17:36,392 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-15 00:17:36,393 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-15 00:17:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-15 00:17:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-10-15 00:17:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-10-15 00:17:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-10-15 00:17:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-10-15 00:17:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-15 00:17:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-10-15 00:17:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-15 00:17:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-15 00:17:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-15 00:17:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-15 00:17:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:17:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-15 00:17:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:17:36,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:17:36,669 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:36,755 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-15 00:17:36,756 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-15 00:17:36,780 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:36,881 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-10-15 00:17:36,881 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-10-15 00:17:36,883 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:36,921 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-15 00:17:36,921 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-15 00:17:36,927 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:36,970 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-15 00:17:36,970 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-15 00:17:37,058 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:37,076 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-15 00:17:37,076 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-15 00:17:37,099 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:17:37,190 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-10-15 00:17:37,191 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-10-15 00:17:37,210 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:17:37,210 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 00:17:37,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:17:37 BoogieIcfgContainer [2020-10-15 00:17:37,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:17:37,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:17:37,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:17:37,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:17:37,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:17:35" (1/3) ... [2020-10-15 00:17:37,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a73c5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:17:37, skipping insertion in model container [2020-10-15 00:17:37,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:17:36" (2/3) ... [2020-10-15 00:17:37,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a73c5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:17:37, skipping insertion in model container [2020-10-15 00:17:37,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:17:37" (3/3) ... [2020-10-15 00:17:37,226 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-10-15 00:17:37,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:17:37,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:17:37,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:17:37,289 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:17:37,289 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:17:37,289 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:17:37,290 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:17:37,290 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:17:37,290 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:17:37,290 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:17:37,291 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:17:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-10-15 00:17:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:17:37,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:37,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:37,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:37,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-10-15 00:17:37,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:37,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191133740] [2020-10-15 00:17:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:38,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:17:38,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:17:38,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-15 00:17:38,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:38,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:17:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:17:38,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:38,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:38,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:17:38,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:38,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:17:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:38,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:38,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:38,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:38,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:17:38,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:38,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:38,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191133740] [2020-10-15 00:17:38,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:38,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:17:38,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939572307] [2020-10-15 00:17:38,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:17:38,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:38,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:17:38,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:17:38,527 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-10-15 00:17:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:39,453 INFO L93 Difference]: Finished difference Result 411 states and 618 transitions. [2020-10-15 00:17:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:39,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 00:17:39,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:39,472 INFO L225 Difference]: With dead ends: 411 [2020-10-15 00:17:39,472 INFO L226 Difference]: Without dead ends: 255 [2020-10-15 00:17:39,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:17:39,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-15 00:17:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 227. [2020-10-15 00:17:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-15 00:17:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2020-10-15 00:17:39,559 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 20 [2020-10-15 00:17:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:39,559 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2020-10-15 00:17:39,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:17:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2020-10-15 00:17:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 00:17:39,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:39,561 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] [2020-10-15 00:17:39,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:17:39,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:39,562 INFO L82 PathProgramCache]: Analyzing trace with hash -644175699, now seen corresponding path program 1 times [2020-10-15 00:17:39,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:39,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105360444] [2020-10-15 00:17:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 00:17:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:17:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-15 00:17:39,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:17:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:39,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:39,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:39,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:40,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:40,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:17:40,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:40,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:40,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:40,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105360444] [2020-10-15 00:17:40,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:40,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:17:40,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764777399] [2020-10-15 00:17:40,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:17:40,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:40,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:17:40,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:17:40,050 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand 7 states. [2020-10-15 00:17:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:41,258 INFO L93 Difference]: Finished difference Result 289 states and 397 transitions. [2020-10-15 00:17:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:17:41,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-15 00:17:41,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:41,262 INFO L225 Difference]: With dead ends: 289 [2020-10-15 00:17:41,262 INFO L226 Difference]: Without dead ends: 276 [2020-10-15 00:17:41,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:41,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-15 00:17:41,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 231. [2020-10-15 00:17:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-15 00:17:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 323 transitions. [2020-10-15 00:17:41,296 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 323 transitions. Word has length 21 [2020-10-15 00:17:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:41,296 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 323 transitions. [2020-10-15 00:17:41,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:17:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 323 transitions. [2020-10-15 00:17:41,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 00:17:41,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:41,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:41,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:17:41,299 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:41,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-10-15 00:17:41,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:41,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326522421] [2020-10-15 00:17:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:41,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:41,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:17:41,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:41,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-15 00:17:41,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:41,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:17:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:17:41,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:41,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:41,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:41,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:41,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:41,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:41,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:41,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:41,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:41,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:41,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:41,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:41,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:41,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:41,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:41,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:41,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:41,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:41,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:41,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:41,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:41,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:41,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:41,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:41,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:41,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:41,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:41,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:41,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:41,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326522421] [2020-10-15 00:17:41,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:41,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:17:41,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436216713] [2020-10-15 00:17:41,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:17:41,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:41,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:17:41,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:17:41,705 INFO L87 Difference]: Start difference. First operand 231 states and 323 transitions. Second operand 6 states. [2020-10-15 00:17:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:42,848 INFO L93 Difference]: Finished difference Result 402 states and 548 transitions. [2020-10-15 00:17:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:42,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-15 00:17:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:42,855 INFO L225 Difference]: With dead ends: 402 [2020-10-15 00:17:42,855 INFO L226 Difference]: Without dead ends: 346 [2020-10-15 00:17:42,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:42,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-15 00:17:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 277. [2020-10-15 00:17:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-15 00:17:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 382 transitions. [2020-10-15 00:17:42,890 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 382 transitions. Word has length 28 [2020-10-15 00:17:42,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:42,890 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 382 transitions. [2020-10-15 00:17:42,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:17:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 382 transitions. [2020-10-15 00:17:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 00:17:42,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:42,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:42,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:17:42,893 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:42,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:42,893 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-10-15 00:17:42,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:42,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439512619] [2020-10-15 00:17:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:17:43,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-15 00:17:43,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:17:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:17:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:43,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:43,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:43,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:43,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:43,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439512619] [2020-10-15 00:17:43,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:43,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:17:43,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193870422] [2020-10-15 00:17:43,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:17:43,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:43,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:17:43,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:17:43,206 INFO L87 Difference]: Start difference. First operand 277 states and 382 transitions. Second operand 6 states. [2020-10-15 00:17:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:43,908 INFO L93 Difference]: Finished difference Result 425 states and 571 transitions. [2020-10-15 00:17:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:43,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-15 00:17:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:43,912 INFO L225 Difference]: With dead ends: 425 [2020-10-15 00:17:43,912 INFO L226 Difference]: Without dead ends: 337 [2020-10-15 00:17:43,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:43,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-15 00:17:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 301. [2020-10-15 00:17:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-15 00:17:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 411 transitions. [2020-10-15 00:17:43,948 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 411 transitions. Word has length 28 [2020-10-15 00:17:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:43,948 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 411 transitions. [2020-10-15 00:17:43,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:17:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 411 transitions. [2020-10-15 00:17:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 00:17:43,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:43,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:43,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:17:43,952 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-10-15 00:17:43,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:43,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246540576] [2020-10-15 00:17:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:44,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 00:17:44,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:44,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-15 00:17:44,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:44,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:17:44,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:17:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:44,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:44,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:44,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:17:44,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:44,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:44,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:44,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:44,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:44,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:44,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:44,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:44,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:44,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:44,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:44,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:44,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:44,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:44,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246540576] [2020-10-15 00:17:44,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:44,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:17:44,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108604885] [2020-10-15 00:17:44,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:17:44,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:44,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:17:44,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:17:44,363 INFO L87 Difference]: Start difference. First operand 301 states and 411 transitions. Second operand 6 states. [2020-10-15 00:17:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:45,146 INFO L93 Difference]: Finished difference Result 304 states and 413 transitions. [2020-10-15 00:17:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:45,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-15 00:17:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:45,150 INFO L225 Difference]: With dead ends: 304 [2020-10-15 00:17:45,150 INFO L226 Difference]: Without dead ends: 300 [2020-10-15 00:17:45,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:17:45,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-15 00:17:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2020-10-15 00:17:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-15 00:17:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 408 transitions. [2020-10-15 00:17:45,198 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 408 transitions. Word has length 38 [2020-10-15 00:17:45,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:45,199 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 408 transitions. [2020-10-15 00:17:45,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:17:45,199 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 408 transitions. [2020-10-15 00:17:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:17:45,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:45,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:45,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:17:45,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:45,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:45,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-10-15 00:17:45,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:45,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320866456] [2020-10-15 00:17:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:17:46,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:17:46,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-15 00:17:46,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:17:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:17:46,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:46,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:46,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:46,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:46,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:17:46,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:46,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:46,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:46,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:46,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:46,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:17:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:46,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:46,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:46,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:46,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:46,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 00:17:46,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:46,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:17:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:46,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320866456] [2020-10-15 00:17:46,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:46,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:46,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162562760] [2020-10-15 00:17:46,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:46,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:46,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:46,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:46,871 INFO L87 Difference]: Start difference. First operand 300 states and 408 transitions. Second operand 10 states. [2020-10-15 00:17:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:48,461 INFO L93 Difference]: Finished difference Result 449 states and 599 transitions. [2020-10-15 00:17:48,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:17:48,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-15 00:17:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:48,464 INFO L225 Difference]: With dead ends: 449 [2020-10-15 00:17:48,464 INFO L226 Difference]: Without dead ends: 384 [2020-10-15 00:17:48,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:17:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-15 00:17:48,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 351. [2020-10-15 00:17:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-15 00:17:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 465 transitions. [2020-10-15 00:17:48,505 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 465 transitions. Word has length 46 [2020-10-15 00:17:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:48,505 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 465 transitions. [2020-10-15 00:17:48,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 465 transitions. [2020-10-15 00:17:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:17:48,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:48,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:48,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:17:48,509 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:48,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:48,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1876426227, now seen corresponding path program 1 times [2020-10-15 00:17:48,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:48,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620480408] [2020-10-15 00:17:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 00:17:48,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-15 00:17:48,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-15 00:17:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:48,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:48,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:48,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:49,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:49,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:49,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:49,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:49,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:49,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:49,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:49,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:49,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:49,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:49,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:49,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:49,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:49,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:49,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:49,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:49,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:49,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:49,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:49,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:17:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:49,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:49,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:49,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:49,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:49,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:49,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:17:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:17:49,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:49,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620480408] [2020-10-15 00:17:49,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:49,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:49,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25785173] [2020-10-15 00:17:49,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:49,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:49,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:49,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:49,086 INFO L87 Difference]: Start difference. First operand 351 states and 465 transitions. Second operand 8 states. [2020-10-15 00:17:50,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:50,228 INFO L93 Difference]: Finished difference Result 405 states and 526 transitions. [2020-10-15 00:17:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:17:50,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-15 00:17:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:50,231 INFO L225 Difference]: With dead ends: 405 [2020-10-15 00:17:50,232 INFO L226 Difference]: Without dead ends: 342 [2020-10-15 00:17:50,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-15 00:17:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 325. [2020-10-15 00:17:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-15 00:17:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 431 transitions. [2020-10-15 00:17:50,261 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 431 transitions. Word has length 46 [2020-10-15 00:17:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:50,262 INFO L479 AbstractCegarLoop]: Abstraction has 325 states and 431 transitions. [2020-10-15 00:17:50,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 431 transitions. [2020-10-15 00:17:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-15 00:17:50,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:50,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:50,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:17:50,267 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:50,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-10-15 00:17:50,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:50,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50360389] [2020-10-15 00:17:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 00:17:50,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-15 00:17:50,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:17:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:50,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:50,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:50,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:50,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:50,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:17:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:17:50,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 00:17:50,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:50,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:17:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:50,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:50,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:50,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:50,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50360389] [2020-10-15 00:17:50,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:50,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:17:50,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739508571] [2020-10-15 00:17:50,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:17:50,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:50,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:17:50,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:17:50,838 INFO L87 Difference]: Start difference. First operand 325 states and 431 transitions. Second operand 11 states. [2020-10-15 00:17:52,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:52,205 INFO L93 Difference]: Finished difference Result 353 states and 459 transitions. [2020-10-15 00:17:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:17:52,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-15 00:17:52,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:52,209 INFO L225 Difference]: With dead ends: 353 [2020-10-15 00:17:52,210 INFO L226 Difference]: Without dead ends: 301 [2020-10-15 00:17:52,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:17:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-15 00:17:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 260. [2020-10-15 00:17:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-15 00:17:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 340 transitions. [2020-10-15 00:17:52,234 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 340 transitions. Word has length 46 [2020-10-15 00:17:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:52,234 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 340 transitions. [2020-10-15 00:17:52,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:17:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 340 transitions. [2020-10-15 00:17:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:17:52,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:52,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:52,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:17:52,237 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-10-15 00:17:52,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:52,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758433174] [2020-10-15 00:17:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 00:17:52,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 00:17:52,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-15 00:17:52,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:17:52,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:52,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:52,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:52,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:52,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:52,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:52,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:52,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:17:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:17:52,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:52,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:52,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:52,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:52,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:52,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 00:17:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:52,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:52,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:52,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:52,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758433174] [2020-10-15 00:17:52,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:52,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:52,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345916045] [2020-10-15 00:17:52,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:52,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:52,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:52,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:52,515 INFO L87 Difference]: Start difference. First operand 260 states and 340 transitions. Second operand 8 states. [2020-10-15 00:17:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:53,102 INFO L93 Difference]: Finished difference Result 290 states and 375 transitions. [2020-10-15 00:17:53,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:17:53,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-15 00:17:53,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:53,105 INFO L225 Difference]: With dead ends: 290 [2020-10-15 00:17:53,105 INFO L226 Difference]: Without dead ends: 258 [2020-10-15 00:17:53,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:17:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-15 00:17:53,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-10-15 00:17:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-15 00:17:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 336 transitions. [2020-10-15 00:17:53,155 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 336 transitions. Word has length 53 [2020-10-15 00:17:53,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:53,155 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 336 transitions. [2020-10-15 00:17:53,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:53,156 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 336 transitions. [2020-10-15 00:17:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 00:17:53,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:53,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:53,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:17:53,158 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:53,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:53,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-10-15 00:17:53,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:53,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855987470] [2020-10-15 00:17:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:53,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:53,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:53,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 00:17:53,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:53,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-15 00:17:53,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:53,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:53,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 00:17:53,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:53,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:53,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:53,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:53,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:53,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:53,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:54,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:54,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:54,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:54,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:54,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:54,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:54,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:54,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:17:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:17:54,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 00:17:54,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:17:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:54,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 00:17:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:54,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:54,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:54,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855987470] [2020-10-15 00:17:54,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:54,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:17:54,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992501986] [2020-10-15 00:17:54,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:17:54,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:54,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:17:54,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:54,147 INFO L87 Difference]: Start difference. First operand 258 states and 336 transitions. Second operand 9 states. [2020-10-15 00:17:55,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:55,463 INFO L93 Difference]: Finished difference Result 313 states and 397 transitions. [2020-10-15 00:17:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:17:55,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-15 00:17:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:55,467 INFO L225 Difference]: With dead ends: 313 [2020-10-15 00:17:55,467 INFO L226 Difference]: Without dead ends: 307 [2020-10-15 00:17:55,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:17:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-15 00:17:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 292. [2020-10-15 00:17:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-15 00:17:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 375 transitions. [2020-10-15 00:17:55,493 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 375 transitions. Word has length 51 [2020-10-15 00:17:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:55,493 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 375 transitions. [2020-10-15 00:17:55,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:17:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 375 transitions. [2020-10-15 00:17:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 00:17:55,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:55,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:55,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:17:55,495 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:55,496 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-10-15 00:17:55,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:55,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787801543] [2020-10-15 00:17:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:56,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:17:56,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:56,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-15 00:17:56,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:56,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:17:56,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-10-15 00:17:56,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:56,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:56,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:56,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:56,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:56,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:56,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:56,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:56,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:56,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:56,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:56,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:56,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:56,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:56,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:56,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:56,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:56,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:56,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:17:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:56,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:56,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:17:56,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:56,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 00:17:56,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:56,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:17:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:17:56,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:56,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 00:17:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:56,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:56,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:56,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:56,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:17:56,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:56,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:17:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:56,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:56,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787801543] [2020-10-15 00:17:56,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:56,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:17:56,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355757955] [2020-10-15 00:17:56,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:17:56,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:56,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:17:56,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:56,380 INFO L87 Difference]: Start difference. First operand 292 states and 375 transitions. Second operand 12 states. [2020-10-15 00:17:57,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:57,760 INFO L93 Difference]: Finished difference Result 302 states and 383 transitions. [2020-10-15 00:17:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:17:57,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-15 00:17:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:57,763 INFO L225 Difference]: With dead ends: 302 [2020-10-15 00:17:57,764 INFO L226 Difference]: Without dead ends: 261 [2020-10-15 00:17:57,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:17:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-15 00:17:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2020-10-15 00:17:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-15 00:17:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 334 transitions. [2020-10-15 00:17:57,787 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 334 transitions. Word has length 52 [2020-10-15 00:17:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:57,788 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 334 transitions. [2020-10-15 00:17:57,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:17:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 334 transitions. [2020-10-15 00:17:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:17:57,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:57,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:57,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:17:57,790 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:57,790 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-10-15 00:17:57,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:57,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196263993] [2020-10-15 00:17:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:58,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:58,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:17:58,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:58,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-15 00:17:58,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:58,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:17:58,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:58,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:58,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:58,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:58,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:58,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:58,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:58,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:58,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:58,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:58,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:58,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:58,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:58,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:58,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:58,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:58,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:58,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:17:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:58,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:58,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:58,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:17:58,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:58,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 00:17:58,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:58,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:58,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:58,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:58,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:17:58,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 00:17:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:58,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:58,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:58,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:58,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:17:58,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:58,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:58,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:17:58,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:58,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196263993] [2020-10-15 00:17:58,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:58,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:17:58,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941625318] [2020-10-15 00:17:58,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:17:58,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:58,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:17:58,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:58,330 INFO L87 Difference]: Start difference. First operand 258 states and 334 transitions. Second operand 12 states. [2020-10-15 00:17:59,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:59,524 INFO L93 Difference]: Finished difference Result 270 states and 346 transitions. [2020-10-15 00:17:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:17:59,524 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-15 00:17:59,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:59,526 INFO L225 Difference]: With dead ends: 270 [2020-10-15 00:17:59,526 INFO L226 Difference]: Without dead ends: 229 [2020-10-15 00:17:59,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:59,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-15 00:17:59,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-15 00:17:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-15 00:17:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 295 transitions. [2020-10-15 00:17:59,550 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 295 transitions. Word has length 53 [2020-10-15 00:17:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:59,550 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 295 transitions. [2020-10-15 00:17:59,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:17:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 295 transitions. [2020-10-15 00:17:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:17:59,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:59,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:59,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:17:59,552 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:59,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-10-15 00:17:59,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:59,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774497365] [2020-10-15 00:17:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:17:59,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-15 00:17:59,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 00:17:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:17:59,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:59,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:59,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:59,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:59,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:59,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:59,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:59,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:17:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-15 00:18:00,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-15 00:18:00,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:18:00,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:00,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:00,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:00,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:00,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:18:00,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:00,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:00,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:00,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:00,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:18:00,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:00,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774497365] [2020-10-15 00:18:00,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:00,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:18:00,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080389229] [2020-10-15 00:18:00,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:18:00,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:00,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:18:00,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:00,119 INFO L87 Difference]: Start difference. First operand 229 states and 295 transitions. Second operand 14 states. [2020-10-15 00:18:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:01,248 INFO L93 Difference]: Finished difference Result 245 states and 311 transitions. [2020-10-15 00:18:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:01,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-15 00:18:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:01,251 INFO L225 Difference]: With dead ends: 245 [2020-10-15 00:18:01,251 INFO L226 Difference]: Without dead ends: 224 [2020-10-15 00:18:01,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:01,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-15 00:18:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-10-15 00:18:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-15 00:18:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 288 transitions. [2020-10-15 00:18:01,277 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 288 transitions. Word has length 54 [2020-10-15 00:18:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:01,277 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 288 transitions. [2020-10-15 00:18:01,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:18:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 288 transitions. [2020-10-15 00:18:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:18:01,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:01,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:01,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:18:01,279 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:01,279 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-10-15 00:18:01,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:01,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047381741] [2020-10-15 00:18:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:18:01,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:01,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-15 00:18:01,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-15 00:18:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:18:01,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:01,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:01,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:01,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:01,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:01,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:02,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:02,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:02,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:02,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:02,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:02,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:02,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:02,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:02,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:02,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:18:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:02,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:02,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:02,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-15 00:18:02,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 00:18:02,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:02,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:18:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:02,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:02,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:02,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:02,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:18:02,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:02,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:02,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:02,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:02,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:18:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:02,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:02,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:02,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:02,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:02,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:02,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:02,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:02,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:02,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:02,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:02,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047381741] [2020-10-15 00:18:02,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:02,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:18:02,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274863897] [2020-10-15 00:18:02,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:18:02,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:02,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:18:02,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:18:02,185 INFO L87 Difference]: Start difference. First operand 224 states and 288 transitions. Second operand 11 states. [2020-10-15 00:18:03,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:03,039 INFO L93 Difference]: Finished difference Result 315 states and 398 transitions. [2020-10-15 00:18:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:18:03,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-15 00:18:03,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:03,042 INFO L225 Difference]: With dead ends: 315 [2020-10-15 00:18:03,042 INFO L226 Difference]: Without dead ends: 254 [2020-10-15 00:18:03,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-15 00:18:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 239. [2020-10-15 00:18:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-15 00:18:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 307 transitions. [2020-10-15 00:18:03,065 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 307 transitions. Word has length 57 [2020-10-15 00:18:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:03,066 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 307 transitions. [2020-10-15 00:18:03,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:18:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 307 transitions. [2020-10-15 00:18:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:18:03,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:03,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:03,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:18:03,068 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:03,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-10-15 00:18:03,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:03,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706422582] [2020-10-15 00:18:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 00:18:03,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:03,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-15 00:18:03,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:18:03,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 00:18:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:18:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:03,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:03,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:03,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:03,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:03,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:03,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:03,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:03,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:18:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:18:03,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:03,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-15 00:18:03,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:18:03,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:04,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:18:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:04,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:04,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:18:04,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:04,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 00:18:04,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:04,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:18:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:04,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:04,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:04,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:04,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:04,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:18:04,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:04,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:18:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:04,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706422582] [2020-10-15 00:18:04,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:04,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:18:04,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122002320] [2020-10-15 00:18:04,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:18:04,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:04,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:18:04,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:18:04,127 INFO L87 Difference]: Start difference. First operand 239 states and 307 transitions. Second operand 15 states. [2020-10-15 00:18:05,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:05,221 INFO L93 Difference]: Finished difference Result 251 states and 319 transitions. [2020-10-15 00:18:05,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:18:05,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-15 00:18:05,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:05,224 INFO L225 Difference]: With dead ends: 251 [2020-10-15 00:18:05,224 INFO L226 Difference]: Without dead ends: 212 [2020-10-15 00:18:05,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:05,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-15 00:18:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-10-15 00:18:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-15 00:18:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 264 transitions. [2020-10-15 00:18:05,244 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 264 transitions. Word has length 60 [2020-10-15 00:18:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:05,244 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 264 transitions. [2020-10-15 00:18:05,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:18:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 264 transitions. [2020-10-15 00:18:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:18:05,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:05,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:05,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:18:05,246 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-10-15 00:18:05,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:05,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702588638] [2020-10-15 00:18:05,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 00:18:05,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-15 00:18:05,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:18:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 00:18:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:18:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:05,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:05,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:05,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:05,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:05,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:05,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:05,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:05,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:05,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:05,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:05,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:18:05,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-15 00:18:05,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:18:05,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:05,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:18:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 00:18:05,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 00:18:05,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:18:05,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:05,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 00:18:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:05,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:18:05,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:18:05,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:05,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702588638] [2020-10-15 00:18:05,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:05,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 00:18:05,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086880469] [2020-10-15 00:18:05,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:18:05,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:05,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:18:05,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:18:05,881 INFO L87 Difference]: Start difference. First operand 212 states and 264 transitions. Second operand 15 states. [2020-10-15 00:18:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:06,642 INFO L93 Difference]: Finished difference Result 224 states and 276 transitions. [2020-10-15 00:18:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:18:06,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-15 00:18:06,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:06,644 INFO L225 Difference]: With dead ends: 224 [2020-10-15 00:18:06,645 INFO L226 Difference]: Without dead ends: 210 [2020-10-15 00:18:06,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-15 00:18:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-10-15 00:18:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-15 00:18:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 260 transitions. [2020-10-15 00:18:06,675 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 260 transitions. Word has length 56 [2020-10-15 00:18:06,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:06,676 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 260 transitions. [2020-10-15 00:18:06,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:18:06,676 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 260 transitions. [2020-10-15 00:18:06,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:18:06,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:06,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:06,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:18:06,678 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-10-15 00:18:06,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:06,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042379409] [2020-10-15 00:18:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:18:06,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 00:18:06,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:18:06,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:07,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:07,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:07,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:07,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:07,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:18:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-15 00:18:07,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:18:07,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:18:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:07,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:18:07,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:18:07,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:07,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042379409] [2020-10-15 00:18:07,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:07,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:18:07,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621819576] [2020-10-15 00:18:07,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:18:07,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:07,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:18:07,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:18:07,325 INFO L87 Difference]: Start difference. First operand 210 states and 260 transitions. Second operand 13 states. [2020-10-15 00:18:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:08,838 INFO L93 Difference]: Finished difference Result 283 states and 336 transitions. [2020-10-15 00:18:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:18:08,839 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-15 00:18:08,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:08,841 INFO L225 Difference]: With dead ends: 283 [2020-10-15 00:18:08,841 INFO L226 Difference]: Without dead ends: 266 [2020-10-15 00:18:08,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:18:08,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-15 00:18:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 224. [2020-10-15 00:18:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-15 00:18:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 275 transitions. [2020-10-15 00:18:08,866 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 275 transitions. Word has length 55 [2020-10-15 00:18:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:08,866 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 275 transitions. [2020-10-15 00:18:08,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:18:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 275 transitions. [2020-10-15 00:18:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:18:08,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:08,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:08,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:18:08,868 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:08,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:08,869 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-10-15 00:18:08,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:08,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386578184] [2020-10-15 00:18:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:08,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:09,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:09,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:18:09,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:09,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-15 00:18:09,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:09,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 00:18:09,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:18:09,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:09,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:09,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:09,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:09,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:09,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:09,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:09,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:09,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:09,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:09,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:09,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:09,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:09,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:09,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:09,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:09,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:09,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:09,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:09,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:09,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:09,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:09,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:09,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:09,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:09,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:09,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:18:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:09,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:09,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:18:09,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:09,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 00:18:09,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:09,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:09,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:09,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:09,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:18:09,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:09,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 00:18:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:09,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:09,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:09,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:09,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:18:09,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:09,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:18:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:09,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386578184] [2020-10-15 00:18:09,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:09,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:18:09,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975208943] [2020-10-15 00:18:09,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:18:09,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:09,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:18:09,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:09,377 INFO L87 Difference]: Start difference. First operand 224 states and 275 transitions. Second operand 14 states. [2020-10-15 00:18:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:10,161 INFO L93 Difference]: Finished difference Result 240 states and 291 transitions. [2020-10-15 00:18:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:10,162 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-15 00:18:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:10,163 INFO L225 Difference]: With dead ends: 240 [2020-10-15 00:18:10,163 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 00:18:10,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:10,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 00:18:10,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 00:18:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 00:18:10,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-10-15 00:18:10,187 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 55 [2020-10-15 00:18:10,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:10,187 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-10-15 00:18:10,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:18:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-10-15 00:18:10,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:18:10,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:10,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:10,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:18:10,189 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:10,189 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-10-15 00:18:10,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:10,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501190588] [2020-10-15 00:18:10,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:18:10,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 00:18:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:10,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:10,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:10,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:10,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:10,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:10,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:10,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:10,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:10,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:10,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:18:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-15 00:18:10,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 00:18:10,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:10,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:18:10,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:18:10,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:18:10,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:18:10,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:18:10,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:18:10,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:18:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:10,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:10,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:10,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:10,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:10,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:10,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:10,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:10,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:10,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501190588] [2020-10-15 00:18:10,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:10,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:18:10,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116723091] [2020-10-15 00:18:10,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:18:10,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:10,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:18:10,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:18:10,622 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 10 states. [2020-10-15 00:18:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:10,958 INFO L93 Difference]: Finished difference Result 246 states and 281 transitions. [2020-10-15 00:18:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:18:10,959 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-15 00:18:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:10,961 INFO L225 Difference]: With dead ends: 246 [2020-10-15 00:18:10,961 INFO L226 Difference]: Without dead ends: 194 [2020-10-15 00:18:10,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:18:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-15 00:18:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-15 00:18:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-15 00:18:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 221 transitions. [2020-10-15 00:18:10,990 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 221 transitions. Word has length 58 [2020-10-15 00:18:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:10,991 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 221 transitions. [2020-10-15 00:18:10,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:18:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 221 transitions. [2020-10-15 00:18:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:18:10,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:10,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:10,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:18:10,994 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:10,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:10,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-10-15 00:18:10,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:10,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087303478] [2020-10-15 00:18:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 00:18:11,030 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 00:18:11,030 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 00:18:11,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:18:11,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:18:11 BoogieIcfgContainer [2020-10-15 00:18:11,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 00:18:11,094 INFO L168 Benchmark]: Toolchain (without parser) took 35422.12 ms. Allocated memory was 148.4 MB in the beginning and 628.1 MB in the end (delta: 479.7 MB). Free memory was 104.2 MB in the beginning and 465.3 MB in the end (delta: -361.1 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:11,102 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-15 00:18:11,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.20 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 177.1 MB in the end (delta: -73.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:11,107 INFO L168 Benchmark]: Boogie Preprocessor took 68.62 ms. Allocated memory is still 204.5 MB. Free memory was 177.1 MB in the beginning and 174.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:11,108 INFO L168 Benchmark]: RCFGBuilder took 889.57 ms. Allocated memory is still 204.5 MB. Free memory was 174.2 MB in the beginning and 102.5 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:11,109 INFO L168 Benchmark]: TraceAbstraction took 33871.49 ms. Allocated memory was 204.5 MB in the beginning and 628.1 MB in the end (delta: 423.6 MB). Free memory was 102.5 MB in the beginning and 465.3 MB in the end (delta: -362.9 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:11,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 587.20 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 177.1 MB in the end (delta: -73.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.62 ms. Allocated memory is still 204.5 MB. Free memory was 177.1 MB in the beginning and 174.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 889.57 ms. Allocated memory is still 204.5 MB. Free memory was 174.2 MB in the beginning and 102.5 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33871.49 ms. Allocated memory was 204.5 MB in the beginning and 628.1 MB in the end (delta: 423.6 MB). Free memory was 102.5 MB in the beginning and 465.3 MB in the end (delta: -362.9 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; [L292] int status ; [L293] int irp = __VERIFIER_nondet_int() ; [L294] int pirp ; [L295] int pirp__IoStatus__Status ; [L296] int irp_choice = __VERIFIER_nondet_int() ; [L297] int devobj = __VERIFIER_nondet_int() ; [L298] int __cil_tmp8 ; [L300] KernelMode = 0 [L301] Executive = 0 [L302] DevicePowerState = 1 [L303] s = 0 [L304] UNLOADED = 0 [L305] NP = 0 [L306] DC = 0 [L307] SKIP1 = 0 [L308] SKIP2 = 0 [L309] MPR1 = 0 [L310] MPR3 = 0 [L311] IPC = 0 [L312] pended = 0 [L313] compFptr = 0 [L314] compRegistered = 0 [L315] lowerDriverReturn = 0 [L316] setEventCalled = 0 [L317] customIrp = 0 [L318] myStatus = 0 [L322] status = 0 [L323] pirp = irp [L324] CALL _BLAST_init() [L59] UNLOADED = 0 [L60] NP = 1 [L61] DC = 2 [L62] SKIP1 = 3 [L63] SKIP2 = 4 [L64] MPR1 = 5 [L65] MPR3 = 6 [L66] IPC = 7 [L67] s = UNLOADED [L68] pended = 0 [L69] compFptr = 0 [L70] compRegistered = 0 [L71] lowerDriverReturn = 0 [L72] setEventCalled = 0 [L73] customIrp = 0 [L324] RET _BLAST_init() [L326] COND TRUE status >= 0 [L327] s = NP [L328] customIrp = 0 [L329] setEventCalled = customIrp [L330] lowerDriverReturn = setEventCalled [L331] compRegistered = lowerDriverReturn [L332] pended = compRegistered [L333] pirp__IoStatus__Status = 0 [L334] myStatus = 0 [L335] COND FALSE !(irp_choice == 0) [L340] CALL stub_driver_init() [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 [L340] RET stub_driver_init() [L343] COND FALSE !(status < 0) [L347] int tmp_ndt_1; [L348] tmp_ndt_1 = __VERIFIER_nondet_int() [L349] COND FALSE !(tmp_ndt_1 == 0) [L352] int tmp_ndt_2; [L353] tmp_ndt_2 = __VERIFIER_nondet_int() [L354] COND FALSE !(tmp_ndt_2 == 1) [L357] int tmp_ndt_3; [L358] tmp_ndt_3 = __VERIFIER_nondet_int() [L359] COND TRUE tmp_ndt_3 == 3 [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) [L78] int devExt ; [L79] int irpStack ; [L80] int status ; [L81] int event = __VERIFIER_nondet_int() ; [L82] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L83] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L84] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L85] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L86] int devExt__Started ; [L87] int devExt__Removed ; [L88] int devExt__SurpriseRemoved ; [L89] int Irp__IoStatus__Status ; [L90] int Irp__IoStatus__Information ; [L91] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L92] int irpSp ; [L93] int nextIrpSp ; [L94] int nextIrpSp__Control ; [L95] int irpSp___0 ; [L96] int irpSp__Context ; [L97] int irpSp__Control ; [L98] long __cil_tmp23 ; [L101] status = 0 [L102] devExt = DeviceObject__DeviceExtension [L103] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L104] COND FALSE !(irpStack__MinorFunction == 0) [L107] COND FALSE !(irpStack__MinorFunction == 23) [L110] COND TRUE irpStack__MinorFunction == 2 [L234] devExt__Removed = 1 [L235] COND TRUE s == NP [L236] s = SKIP1 [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; [L487] COND FALSE !(\read(compRegistered)) [L500] int tmp_ndt_6; [L501] tmp_ndt_6 = __VERIFIER_nondet_int() [L502] COND FALSE !(tmp_ndt_6 == 0) [L505] int tmp_ndt_7; [L506] tmp_ndt_7 = __VERIFIER_nondet_int() [L507] COND TRUE tmp_ndt_7 == 1 [L516] returnVal2 = -1073741823 [L526] COND FALSE !(s == NP) [L530] COND FALSE !(s == MPR1) [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 [L549] return (returnVal2); [L245] RET IofCallDriver(devExt__TopOfStack, Irp) [L246] status = 0 [L288] return (status); [L386] RET, EXPR KbFilter_PnP(devobj, pirp) [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) [L418] COND FALSE !(pended == 1) [L426] COND TRUE s != UNLOADED [L427] COND TRUE status != -1 [L428] COND FALSE !(s != SKIP2) [L438] COND FALSE !(pended == 1) [L445] COND FALSE !(s == DC) [L450] COND TRUE status != lowerDriverReturn [L451] CALL errorFn() [L1011] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.7s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 19.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4430 SDtfs, 7119 SDslu, 7004 SDs, 0 SdLazy, 15748 SolverSat, 1433 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 386 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 344 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 933 NumberOfCodeBlocks, 933 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 858 ConstructedInterpolants, 0 QuantifiedInterpolants, 199294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...