/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:24:11,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:24:11,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:24:11,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:24:11,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:24:11,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:24:11,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:24:11,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:24:11,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:24:11,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:24:11,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:24:11,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:24:11,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:24:11,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:24:11,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:24:11,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:24:11,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:24:11,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:24:11,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:24:11,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:24:11,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:24:11,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:24:11,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:24:11,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:24:11,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:24:11,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:24:11,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:24:11,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:24:11,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:24:11,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:24:11,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:24:11,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:24:11,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:24:11,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:24:11,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:24:11,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:24:11,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:24:11,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:24:11,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:24:11,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:24:11,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:24:11,541 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 [2020-10-28 15:24:11,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:24:11,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:24:11,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:24:11,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:24:11,571 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:24:11,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:24:11,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:24:11,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:24:11,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:24:11,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:24:11,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:24:11,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:24:11,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:24:11,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:24:11,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:24:11,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:24:11,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:24:11,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:24:11,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:24:11,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:24:11,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:24:11,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:24:11,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:24:11,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:24:11,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:24:11,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:24:11,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:24:11,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:24:11,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:24:11,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:24:11,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:24:12,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:24:12,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:24:12,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:24:12,008 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:24:12,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2020-10-28 15:24:12,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b43f63c3/2f7e8e226e6a4867976993ff176f0441/FLAG2254b37ba [2020-10-28 15:24:12,895 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:24:12,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2020-10-28 15:24:12,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b43f63c3/2f7e8e226e6a4867976993ff176f0441/FLAG2254b37ba [2020-10-28 15:24:13,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b43f63c3/2f7e8e226e6a4867976993ff176f0441 [2020-10-28 15:24:13,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:24:13,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:24:13,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:24:13,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:24:13,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:24:13,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:24:13" (1/1) ... [2020-10-28 15:24:13,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f8bf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13, skipping insertion in model container [2020-10-28 15:24:13,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:24:13" (1/1) ... [2020-10-28 15:24:13,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:24:13,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:24:13,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:24:13,763 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:24:13,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:24:13,925 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:24:13,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13 WrapperNode [2020-10-28 15:24:13,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:24:13,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:24:13,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:24:13,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:24:13,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13" (1/1) ... [2020-10-28 15:24:13,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13" (1/1) ... [2020-10-28 15:24:13,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13" (1/1) ... [2020-10-28 15:24:13,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13" (1/1) ... [2020-10-28 15:24:14,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13" (1/1) ... [2020-10-28 15:24:14,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13" (1/1) ... [2020-10-28 15:24:14,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13" (1/1) ... [2020-10-28 15:24:14,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:24:14,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:24:14,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:24:14,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:24:14,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13" (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 [2020-10-28 15:24:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:24:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:24:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:24:14,165 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-28 15:24:14,165 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-28 15:24:14,166 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-28 15:24:14,166 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-28 15:24:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-28 15:24:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-28 15:24:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-28 15:24:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-28 15:24:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-28 15:24:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:24:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-28 15:24:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-28 15:24:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-28 15:24:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-28 15:24:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-28 15:24:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-28 15:24:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-28 15:24:14,170 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-28 15:24:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-28 15:24:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-28 15:24:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-28 15:24:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-28 15:24:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-28 15:24:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2020-10-28 15:24:14,171 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2020-10-28 15:24:14,172 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2020-10-28 15:24:14,172 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2020-10-28 15:24:14,172 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-28 15:24:14,172 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:24:14,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:24:14,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:24:14,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:24:14,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 15:24:14,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:24:14,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-28 15:24:14,173 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-28 15:24:14,173 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-28 15:24:14,173 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-28 15:24:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-28 15:24:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-28 15:24:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-28 15:24:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-28 15:24:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-28 15:24:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-28 15:24:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-28 15:24:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-28 15:24:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-28 15:24:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-28 15:24:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-28 15:24:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-28 15:24:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-28 15:24:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-28 15:24:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2020-10-28 15:24:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2020-10-28 15:24:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2020-10-28 15:24:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2020-10-28 15:24:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-28 15:24:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-28 15:24:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-28 15:24:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-28 15:24:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-28 15:24:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:24:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-28 15:24:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:24:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:24:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:24:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:24:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:24:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:24:14,593 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:14,680 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-28 15:24:14,680 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-28 15:24:14,700 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:14,718 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-28 15:24:14,718 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-28 15:24:14,728 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,043 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-28 15:24:15,043 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-28 15:24:15,049 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,159 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2020-10-28 15:24:15,159 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2020-10-28 15:24:15,182 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,232 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-28 15:24:15,232 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-28 15:24:15,334 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,343 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-28 15:24:15,343 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-28 15:24:15,344 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,354 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-28 15:24:15,354 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-28 15:24:15,355 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,365 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-28 15:24:15,366 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-28 15:24:15,405 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,478 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-28 15:24:15,478 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-28 15:24:15,481 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,609 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2020-10-28 15:24:15,610 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2020-10-28 15:24:15,662 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,668 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-28 15:24:15,668 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-28 15:24:15,669 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,677 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-28 15:24:15,677 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-28 15:24:15,677 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:24:15,683 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-28 15:24:15,683 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-28 15:24:15,708 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:24:15,708 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 15:24:15,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:24:15 BoogieIcfgContainer [2020-10-28 15:24:15,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:24:15,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:24:15,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:24:15,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:24:15,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:24:13" (1/3) ... [2020-10-28 15:24:15,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61142f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:24:15, skipping insertion in model container [2020-10-28 15:24:15,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:24:13" (2/3) ... [2020-10-28 15:24:15,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61142f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:24:15, skipping insertion in model container [2020-10-28 15:24:15,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:24:15" (3/3) ... [2020-10-28 15:24:15,720 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2020-10-28 15:24:15,733 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:24:15,739 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:24:15,753 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:24:15,784 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:24:15,785 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:24:15,785 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:24:15,785 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:24:15,785 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:24:15,785 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:24:15,785 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:24:15,785 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:24:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states. [2020-10-28 15:24:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 15:24:15,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:15,822 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] [2020-10-28 15:24:15,823 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:15,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2095034837, now seen corresponding path program 1 times [2020-10-28 15:24:15,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:15,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191255207] [2020-10-28 15:24:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:16,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:16,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:17,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:17,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 15:24:17,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:24:17,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-28 15:24:17,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:17,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:24:17,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:24:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 15:24:17,437 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:17,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:17,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:17,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:17,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 15:24:17,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:17,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:17,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:17,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:17,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:17,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:24:17,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:17,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:17,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191255207] [2020-10-28 15:24:17,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:17,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:24:17,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163378177] [2020-10-28 15:24:17,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:24:17,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:17,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:24:17,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:24:17,590 INFO L87 Difference]: Start difference. First operand 394 states. Second operand 5 states. [2020-10-28 15:24:17,754 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:24:20,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:20,344 INFO L93 Difference]: Finished difference Result 782 states and 1141 transitions. [2020-10-28 15:24:20,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:24:20,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-28 15:24:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:20,369 INFO L225 Difference]: With dead ends: 782 [2020-10-28 15:24:20,369 INFO L226 Difference]: Without dead ends: 530 [2020-10-28 15:24:20,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:24:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-28 15:24:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 467. [2020-10-28 15:24:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-28 15:24:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 637 transitions. [2020-10-28 15:24:20,581 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 637 transitions. Word has length 21 [2020-10-28 15:24:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:20,581 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 637 transitions. [2020-10-28 15:24:20,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:24:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 637 transitions. [2020-10-28 15:24:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 15:24:20,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:20,584 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] [2020-10-28 15:24:20,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:24:20,584 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:20,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1755240280, now seen corresponding path program 1 times [2020-10-28 15:24:20,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:20,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391900454] [2020-10-28 15:24:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:20,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:20,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 15:24:20,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:24:20,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-28 15:24:20,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:20,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:20,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:24:20,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:24:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:21,062 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:21,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:21,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:21,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:21,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:24:21,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:21,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:21,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:21,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:21,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:21,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:21,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:24:21,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:21,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:24:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:21,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391900454] [2020-10-28 15:24:21,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:21,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:24:21,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025893115] [2020-10-28 15:24:21,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:24:21,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:21,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:24:21,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:24:21,156 INFO L87 Difference]: Start difference. First operand 467 states and 637 transitions. Second operand 5 states. [2020-10-28 15:24:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:23,312 INFO L93 Difference]: Finished difference Result 532 states and 726 transitions. [2020-10-28 15:24:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:24:23,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-28 15:24:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:23,318 INFO L225 Difference]: With dead ends: 532 [2020-10-28 15:24:23,318 INFO L226 Difference]: Without dead ends: 515 [2020-10-28 15:24:23,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:24:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-28 15:24:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 467. [2020-10-28 15:24:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-28 15:24:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 636 transitions. [2020-10-28 15:24:23,393 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 636 transitions. Word has length 21 [2020-10-28 15:24:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:23,394 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 636 transitions. [2020-10-28 15:24:23,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:24:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 636 transitions. [2020-10-28 15:24:23,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 15:24:23,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:23,395 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] [2020-10-28 15:24:23,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:24:23,396 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:23,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:23,396 INFO L82 PathProgramCache]: Analyzing trace with hash 511093743, now seen corresponding path program 1 times [2020-10-28 15:24:23,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:23,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534660608] [2020-10-28 15:24:23,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:23,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:23,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 15:24:23,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 15:24:23,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:23,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:24:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 15:24:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:24:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:23,835 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:23,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:23,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:23,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:23,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 15:24:23,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:23,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:23,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:23,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:23,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:23,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:24:23,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:23,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:23,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:23,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:23,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:23,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:23,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534660608] [2020-10-28 15:24:23,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:23,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:24:23,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203278333] [2020-10-28 15:24:23,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:24:23,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:23,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:24:23,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:24:23,973 INFO L87 Difference]: Start difference. First operand 467 states and 636 transitions. Second operand 6 states. [2020-10-28 15:24:24,133 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 15:24:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:27,251 INFO L93 Difference]: Finished difference Result 869 states and 1178 transitions. [2020-10-28 15:24:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:24:27,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-28 15:24:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:27,260 INFO L225 Difference]: With dead ends: 869 [2020-10-28 15:24:27,260 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 15:24:27,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:24:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 15:24:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 594. [2020-10-28 15:24:27,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-28 15:24:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 807 transitions. [2020-10-28 15:24:27,354 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 807 transitions. Word has length 26 [2020-10-28 15:24:27,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:27,355 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 807 transitions. [2020-10-28 15:24:27,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:24:27,355 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 807 transitions. [2020-10-28 15:24:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 15:24:27,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:27,360 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] [2020-10-28 15:24:27,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:24:27,361 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:27,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1969845859, now seen corresponding path program 1 times [2020-10-28 15:24:27,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:27,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804184452] [2020-10-28 15:24:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:27,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:27,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:27,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 15:24:27,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-28 15:24:27,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:27,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:24:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 15:24:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 15:24:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:28,007 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:28,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:28,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:28,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:28,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:28,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 15:24:28,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:28,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:28,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:28,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:28,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:28,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:28,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:28,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:24:28,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:28,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:28,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:28,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:28,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:28,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:24:28,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:28,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:28,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:28,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804184452] [2020-10-28 15:24:28,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:28,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:24:28,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947234799] [2020-10-28 15:24:28,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:24:28,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:28,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:24:28,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:24:28,151 INFO L87 Difference]: Start difference. First operand 594 states and 807 transitions. Second operand 6 states. [2020-10-28 15:24:28,296 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:24:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:30,202 INFO L93 Difference]: Finished difference Result 657 states and 887 transitions. [2020-10-28 15:24:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:24:30,204 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-28 15:24:30,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:30,212 INFO L225 Difference]: With dead ends: 657 [2020-10-28 15:24:30,212 INFO L226 Difference]: Without dead ends: 652 [2020-10-28 15:24:30,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:24:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-10-28 15:24:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 592. [2020-10-28 15:24:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-28 15:24:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 803 transitions. [2020-10-28 15:24:30,296 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 803 transitions. Word has length 32 [2020-10-28 15:24:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:30,296 INFO L481 AbstractCegarLoop]: Abstraction has 592 states and 803 transitions. [2020-10-28 15:24:30,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:24:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 803 transitions. [2020-10-28 15:24:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 15:24:30,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:30,298 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, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:30,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:24:30,299 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:30,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1354397237, now seen corresponding path program 1 times [2020-10-28 15:24:30,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:30,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561810574] [2020-10-28 15:24:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:30,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:30,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 15:24:30,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:30,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-28 15:24:30,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:30,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:30,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:24:30,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 15:24:30,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 15:24:30,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:30,840 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:30,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:30,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:30,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:24:30,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:30,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:30,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:30,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:30,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:30,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:30,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:30,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:30,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:30,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:30,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:30,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:30,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:30,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:30,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:30,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561810574] [2020-10-28 15:24:30,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:30,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:24:30,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896836656] [2020-10-28 15:24:30,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:24:30,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:30,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:24:30,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:24:30,965 INFO L87 Difference]: Start difference. First operand 592 states and 803 transitions. Second operand 6 states. [2020-10-28 15:24:31,123 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 15:24:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:33,297 INFO L93 Difference]: Finished difference Result 1136 states and 1528 transitions. [2020-10-28 15:24:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:24:33,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-28 15:24:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:33,304 INFO L225 Difference]: With dead ends: 1136 [2020-10-28 15:24:33,305 INFO L226 Difference]: Without dead ends: 829 [2020-10-28 15:24:33,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:24:33,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-28 15:24:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 780. [2020-10-28 15:24:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2020-10-28 15:24:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1060 transitions. [2020-10-28 15:24:33,400 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1060 transitions. Word has length 34 [2020-10-28 15:24:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:33,401 INFO L481 AbstractCegarLoop]: Abstraction has 780 states and 1060 transitions. [2020-10-28 15:24:33,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:24:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1060 transitions. [2020-10-28 15:24:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 15:24:33,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:33,403 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] [2020-10-28 15:24:33,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:24:33,404 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:33,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:33,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2074061372, now seen corresponding path program 1 times [2020-10-28 15:24:33,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:33,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749267767] [2020-10-28 15:24:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:33,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:33,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 15:24:33,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:33,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 15:24:33,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:33,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:33,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 15:24:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:24:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:33,644 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:33,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:33,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:33,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:33,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:24:33,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:33,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:33,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:33,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:33,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:33,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:33,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:33,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:33,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:33,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:33,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:33,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:33,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:33,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:33,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:33,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:33,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:33,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:24:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:33,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:33,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:33,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:33,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:33,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:33,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:33,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:24:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:33,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:24:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:33,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:33,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:24:33,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:24:33,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:33,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:33,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:33,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:33,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:24:33,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:33,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749267767] [2020-10-28 15:24:33,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:33,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:24:33,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100736212] [2020-10-28 15:24:33,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:24:33,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:33,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:24:33,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:24:33,796 INFO L87 Difference]: Start difference. First operand 780 states and 1060 transitions. Second operand 8 states. [2020-10-28 15:24:33,984 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 15:24:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:36,893 INFO L93 Difference]: Finished difference Result 884 states and 1190 transitions. [2020-10-28 15:24:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:24:36,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-28 15:24:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:36,900 INFO L225 Difference]: With dead ends: 884 [2020-10-28 15:24:36,901 INFO L226 Difference]: Without dead ends: 878 [2020-10-28 15:24:36,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:24:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-10-28 15:24:36,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 823. [2020-10-28 15:24:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-10-28 15:24:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1112 transitions. [2020-10-28 15:24:36,988 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1112 transitions. Word has length 39 [2020-10-28 15:24:36,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:36,989 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1112 transitions. [2020-10-28 15:24:36,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:24:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1112 transitions. [2020-10-28 15:24:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 15:24:36,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:36,991 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] [2020-10-28 15:24:36,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 15:24:36,991 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:36,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:36,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1304308568, now seen corresponding path program 1 times [2020-10-28 15:24:36,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:36,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305142276] [2020-10-28 15:24:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 15:24:37,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:37,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 15:24:37,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:24:37,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 15:24:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:24:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:37,447 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:37,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:37,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:24:37,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:37,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:37,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:24:37,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:37,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:37,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:37,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:37,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:37,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:37,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:37,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305142276] [2020-10-28 15:24:37,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:37,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:24:37,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194449821] [2020-10-28 15:24:37,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:24:37,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:37,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:24:37,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:24:37,574 INFO L87 Difference]: Start difference. First operand 823 states and 1112 transitions. Second operand 6 states. [2020-10-28 15:24:37,746 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 15:24:40,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:40,107 INFO L93 Difference]: Finished difference Result 858 states and 1155 transitions. [2020-10-28 15:24:40,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:24:40,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-28 15:24:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:40,115 INFO L225 Difference]: With dead ends: 858 [2020-10-28 15:24:40,115 INFO L226 Difference]: Without dead ends: 854 [2020-10-28 15:24:40,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:24:40,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-10-28 15:24:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 834. [2020-10-28 15:24:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-28 15:24:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1126 transitions. [2020-10-28 15:24:40,201 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1126 transitions. Word has length 39 [2020-10-28 15:24:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:40,201 INFO L481 AbstractCegarLoop]: Abstraction has 834 states and 1126 transitions. [2020-10-28 15:24:40,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:24:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1126 transitions. [2020-10-28 15:24:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 15:24:40,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:40,203 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] [2020-10-28 15:24:40,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 15:24:40,203 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:40,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1016683771, now seen corresponding path program 1 times [2020-10-28 15:24:40,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:40,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301924139] [2020-10-28 15:24:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:40,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:40,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:40,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 15:24:40,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:24:40,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-28 15:24:40,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:40,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:24:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 15:24:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:41,064 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:41,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:41,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:41,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:41,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:41,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:24:41,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:41,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:41,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:41,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:41,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:41,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:41,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:41,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:41,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:41,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:24:41,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:41,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:41,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:41,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:41,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:41,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:24:41,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:41,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:24:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:24:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:41,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:41,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:41,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:41,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:24:41,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:41,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:24:41,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:41,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:24:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:41,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:41,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:24:41,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:24:41,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:41,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:41,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301924139] [2020-10-28 15:24:41,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:41,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:24:41,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757715230] [2020-10-28 15:24:41,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:24:41,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:41,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:24:41,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:24:41,258 INFO L87 Difference]: Start difference. First operand 834 states and 1126 transitions. Second operand 10 states. [2020-10-28 15:24:41,423 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 15:24:42,879 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-28 15:24:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:44,592 INFO L93 Difference]: Finished difference Result 1190 states and 1614 transitions. [2020-10-28 15:24:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:24:44,593 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-28 15:24:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:44,603 INFO L225 Difference]: With dead ends: 1190 [2020-10-28 15:24:44,604 INFO L226 Difference]: Without dead ends: 1168 [2020-10-28 15:24:44,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:24:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-10-28 15:24:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1044. [2020-10-28 15:24:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2020-10-28 15:24:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1420 transitions. [2020-10-28 15:24:44,733 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1420 transitions. Word has length 40 [2020-10-28 15:24:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:44,735 INFO L481 AbstractCegarLoop]: Abstraction has 1044 states and 1420 transitions. [2020-10-28 15:24:44,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:24:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1420 transitions. [2020-10-28 15:24:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 15:24:44,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:44,739 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] [2020-10-28 15:24:44,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 15:24:44,739 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:44,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:44,740 INFO L82 PathProgramCache]: Analyzing trace with hash -213910996, now seen corresponding path program 1 times [2020-10-28 15:24:44,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:44,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135137447] [2020-10-28 15:24:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:45,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:45,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 15:24:45,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:24:45,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-28 15:24:45,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:45,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:24:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 15:24:45,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:45,582 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:45,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:45,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:45,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:45,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:24:45,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:45,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:45,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:45,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:45,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:45,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:45,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:24:45,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:45,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:45,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:45,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:45,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:45,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:45,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:45,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:24:45,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:45,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:45,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:24:45,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:45,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 15:24:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:45,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:45,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:45,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:24:45,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:45,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:24:45,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:24:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:45,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:45,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:45,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:24:45,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:24:45,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:45,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:45,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:45,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135137447] [2020-10-28 15:24:45,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:45,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:24:45,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729120832] [2020-10-28 15:24:45,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:24:45,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:45,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:24:45,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:24:45,771 INFO L87 Difference]: Start difference. First operand 1044 states and 1420 transitions. Second operand 10 states. [2020-10-28 15:24:45,952 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 15:24:47,535 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-28 15:24:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:49,250 INFO L93 Difference]: Finished difference Result 1397 states and 1910 transitions. [2020-10-28 15:24:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:24:49,251 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 15:24:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:49,262 INFO L225 Difference]: With dead ends: 1397 [2020-10-28 15:24:49,262 INFO L226 Difference]: Without dead ends: 1382 [2020-10-28 15:24:49,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:24:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-10-28 15:24:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1245. [2020-10-28 15:24:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2020-10-28 15:24:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1708 transitions. [2020-10-28 15:24:49,412 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1708 transitions. Word has length 42 [2020-10-28 15:24:49,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:49,412 INFO L481 AbstractCegarLoop]: Abstraction has 1245 states and 1708 transitions. [2020-10-28 15:24:49,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:24:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1708 transitions. [2020-10-28 15:24:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 15:24:49,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:49,414 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] [2020-10-28 15:24:49,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 15:24:49,414 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:49,415 INFO L82 PathProgramCache]: Analyzing trace with hash -404357358, now seen corresponding path program 1 times [2020-10-28 15:24:49,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:49,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834617969] [2020-10-28 15:24:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:49,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:49,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 15:24:49,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 15:24:49,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:49,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:24:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 15:24:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:24:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:49,726 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:49,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:49,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:49,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:49,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:49,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:49,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:49,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:49,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:49,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:49,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:49,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:49,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:49,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:49,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:49,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:49,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:24:49,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:49,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:49,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:24:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:49,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:49,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:49,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:49,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:24:49,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:49,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:49,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:49,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:49,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:24:49,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:24:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:49,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:49,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:24:49,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:24:49,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:49,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:49,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834617969] [2020-10-28 15:24:49,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:49,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:24:49,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494051324] [2020-10-28 15:24:49,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:24:49,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:49,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:24:49,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:24:49,937 INFO L87 Difference]: Start difference. First operand 1245 states and 1708 transitions. Second operand 10 states. [2020-10-28 15:24:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:53,259 INFO L93 Difference]: Finished difference Result 1313 states and 1791 transitions. [2020-10-28 15:24:53,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:24:53,260 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 15:24:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:53,267 INFO L225 Difference]: With dead ends: 1313 [2020-10-28 15:24:53,267 INFO L226 Difference]: Without dead ends: 1297 [2020-10-28 15:24:53,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:24:53,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2020-10-28 15:24:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1243. [2020-10-28 15:24:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-10-28 15:24:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1704 transitions. [2020-10-28 15:24:53,411 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1704 transitions. Word has length 42 [2020-10-28 15:24:53,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:53,411 INFO L481 AbstractCegarLoop]: Abstraction has 1243 states and 1704 transitions. [2020-10-28 15:24:53,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:24:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1704 transitions. [2020-10-28 15:24:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 15:24:53,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:53,413 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] [2020-10-28 15:24:53,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 15:24:53,414 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:53,414 INFO L82 PathProgramCache]: Analyzing trace with hash -634354794, now seen corresponding path program 1 times [2020-10-28 15:24:53,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:53,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249626468] [2020-10-28 15:24:53,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:53,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:53,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 15:24:53,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 15:24:53,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:53,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:24:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 15:24:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:24:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:53,692 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:53,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:53,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:53,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:53,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:24:53,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:53,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:53,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:53,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:53,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:53,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:53,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:53,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:53,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:53,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:53,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:53,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:53,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:53,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:53,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:53,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:53,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:53,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:53,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:24:53,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:53,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:53,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:53,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:53,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 15:24:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:53,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:53,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:53,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:53,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:53,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:24:53,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:53,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:24:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:53,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:24:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:53,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:53,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:24:53,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:24:53,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:53,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:53,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249626468] [2020-10-28 15:24:53,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:53,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:24:53,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162157519] [2020-10-28 15:24:53,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:24:53,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:53,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:24:53,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:24:53,867 INFO L87 Difference]: Start difference. First operand 1243 states and 1704 transitions. Second operand 10 states. [2020-10-28 15:24:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:56,962 INFO L93 Difference]: Finished difference Result 1311 states and 1787 transitions. [2020-10-28 15:24:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:24:56,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-28 15:24:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:56,971 INFO L225 Difference]: With dead ends: 1311 [2020-10-28 15:24:56,971 INFO L226 Difference]: Without dead ends: 1290 [2020-10-28 15:24:56,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:24:56,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2020-10-28 15:24:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1236. [2020-10-28 15:24:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-10-28 15:24:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1695 transitions. [2020-10-28 15:24:57,131 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1695 transitions. Word has length 43 [2020-10-28 15:24:57,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:57,131 INFO L481 AbstractCegarLoop]: Abstraction has 1236 states and 1695 transitions. [2020-10-28 15:24:57,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:24:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1695 transitions. [2020-10-28 15:24:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 15:24:57,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:57,134 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] [2020-10-28 15:24:57,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 15:24:57,134 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:57,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1764901729, now seen corresponding path program 1 times [2020-10-28 15:24:57,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:57,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262215988] [2020-10-28 15:24:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:57,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:57,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 15:24:57,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 15:24:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:57,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 15:24:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:24:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:57,497 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:24:57,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:57,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:57,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:57,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:57,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:57,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:24:57,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:57,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:57,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:57,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:57,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:57,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:57,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:57,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:24:57,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:57,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:57,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:57,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:57,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:57,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:57,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:57,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:24:57,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:57,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:57,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:57,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:24:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:57,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:57,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:57,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:57,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 15:24:57,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:57,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 15:24:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:24:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:57,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262215988] [2020-10-28 15:24:57,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:57,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:24:57,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426529623] [2020-10-28 15:24:57,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:24:57,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:24:57,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:24:57,789 INFO L87 Difference]: Start difference. First operand 1236 states and 1695 transitions. Second operand 8 states. [2020-10-28 15:24:58,116 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 15:24:58,297 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 15:25:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:00,294 INFO L93 Difference]: Finished difference Result 1288 states and 1754 transitions. [2020-10-28 15:25:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:25:00,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-28 15:25:00,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:00,303 INFO L225 Difference]: With dead ends: 1288 [2020-10-28 15:25:00,303 INFO L226 Difference]: Without dead ends: 1265 [2020-10-28 15:25:00,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:25:00,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-28 15:25:00,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1238. [2020-10-28 15:25:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-10-28 15:25:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1697 transitions. [2020-10-28 15:25:00,446 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1697 transitions. Word has length 43 [2020-10-28 15:25:00,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:00,447 INFO L481 AbstractCegarLoop]: Abstraction has 1238 states and 1697 transitions. [2020-10-28 15:25:00,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:25:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1697 transitions. [2020-10-28 15:25:00,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 15:25:00,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:00,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:00,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 15:25:00,449 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:00,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:00,449 INFO L82 PathProgramCache]: Analyzing trace with hash 548308672, now seen corresponding path program 1 times [2020-10-28 15:25:00,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:00,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422420714] [2020-10-28 15:25:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:00,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:01,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:01,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 15:25:01,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:25:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-10-28 15:25:01,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:01,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 15:25:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:25:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:02,084 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:02,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:02,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:02,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:02,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:25:02,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:02,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:02,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:02,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:02,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:02,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:02,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:02,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:02,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:02,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:02,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:02,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:02,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:02,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:02,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:02,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:02,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:02,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 15:25:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:02,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:02,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:02,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:02,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:02,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:02,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422420714] [2020-10-28 15:25:02,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:02,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:25:02,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208206301] [2020-10-28 15:25:02,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:25:02,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:02,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:25:02,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:25:02,247 INFO L87 Difference]: Start difference. First operand 1238 states and 1697 transitions. Second operand 7 states. [2020-10-28 15:25:03,173 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:25:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:04,568 INFO L93 Difference]: Finished difference Result 1830 states and 2581 transitions. [2020-10-28 15:25:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:25:04,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-28 15:25:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:04,580 INFO L225 Difference]: With dead ends: 1830 [2020-10-28 15:25:04,580 INFO L226 Difference]: Without dead ends: 1826 [2020-10-28 15:25:04,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:25:04,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2020-10-28 15:25:04,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1371. [2020-10-28 15:25:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-10-28 15:25:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1887 transitions. [2020-10-28 15:25:04,752 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1887 transitions. Word has length 45 [2020-10-28 15:25:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:04,752 INFO L481 AbstractCegarLoop]: Abstraction has 1371 states and 1887 transitions. [2020-10-28 15:25:04,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:25:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1887 transitions. [2020-10-28 15:25:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 15:25:04,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:04,754 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] [2020-10-28 15:25:04,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 15:25:04,755 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:04,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:04,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1072001970, now seen corresponding path program 1 times [2020-10-28 15:25:04,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:04,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714465479] [2020-10-28 15:25:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:04,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:04,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 15:25:04,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 15:25:04,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:04,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 15:25:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:25:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:05,104 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:05,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:05,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:05,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:25:05,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:05,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:05,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:05,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:05,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:05,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:05,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:05,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:05,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:05,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:05,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:05,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:05,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:05,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:05,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:25:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:05,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:05,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 15:25:05,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:05,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 15:25:05,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:05,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 15:25:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:25:05,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:05,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714465479] [2020-10-28 15:25:05,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:05,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:25:05,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160154992] [2020-10-28 15:25:05,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:25:05,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:05,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:25:05,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:25:05,322 INFO L87 Difference]: Start difference. First operand 1371 states and 1887 transitions. Second operand 8 states. [2020-10-28 15:25:05,660 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 15:25:05,836 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 15:25:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:08,105 INFO L93 Difference]: Finished difference Result 1418 states and 1940 transitions. [2020-10-28 15:25:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:25:08,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-28 15:25:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:08,115 INFO L225 Difference]: With dead ends: 1418 [2020-10-28 15:25:08,115 INFO L226 Difference]: Without dead ends: 1395 [2020-10-28 15:25:08,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:25:08,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2020-10-28 15:25:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1371. [2020-10-28 15:25:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-10-28 15:25:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1887 transitions. [2020-10-28 15:25:08,278 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1887 transitions. Word has length 44 [2020-10-28 15:25:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:08,278 INFO L481 AbstractCegarLoop]: Abstraction has 1371 states and 1887 transitions. [2020-10-28 15:25:08,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:25:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1887 transitions. [2020-10-28 15:25:08,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 15:25:08,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:08,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:08,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 15:25:08,281 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:08,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1027312836, now seen corresponding path program 1 times [2020-10-28 15:25:08,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:08,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664952087] [2020-10-28 15:25:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:08,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:08,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:08,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:09,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:09,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 15:25:09,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:25:09,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1668 [2020-10-28 15:25:09,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:09,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 15:25:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:25:09,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,189 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:10,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:25:10,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:10,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:10,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:10,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:10,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 15:25:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:10,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:25:10,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:25:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:10,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664952087] [2020-10-28 15:25:10,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:10,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 15:25:10,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641324975] [2020-10-28 15:25:10,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:25:10,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:10,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:25:10,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:25:10,350 INFO L87 Difference]: Start difference. First operand 1371 states and 1887 transitions. Second operand 9 states. [2020-10-28 15:25:13,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:13,803 INFO L93 Difference]: Finished difference Result 1497 states and 2038 transitions. [2020-10-28 15:25:13,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:25:13,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-28 15:25:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:13,814 INFO L225 Difference]: With dead ends: 1497 [2020-10-28 15:25:13,814 INFO L226 Difference]: Without dead ends: 1395 [2020-10-28 15:25:13,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:25:13,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2020-10-28 15:25:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1375. [2020-10-28 15:25:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-10-28 15:25:13,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1892 transitions. [2020-10-28 15:25:13,974 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1892 transitions. Word has length 46 [2020-10-28 15:25:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:13,974 INFO L481 AbstractCegarLoop]: Abstraction has 1375 states and 1892 transitions. [2020-10-28 15:25:13,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:25:13,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1892 transitions. [2020-10-28 15:25:13,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 15:25:13,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:13,977 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] [2020-10-28 15:25:13,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 15:25:13,977 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:13,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:13,978 INFO L82 PathProgramCache]: Analyzing trace with hash -373040951, now seen corresponding path program 1 times [2020-10-28 15:25:13,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:13,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154251157] [2020-10-28 15:25:13,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 15:25:14,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 15:25:14,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 15:25:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:25:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:14,396 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:14,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:14,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 15:25:14,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:14,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:14,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:14,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:14,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:14,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:14,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:14,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:25:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 15:25:14,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 15:25:14,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:25:14,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:14,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:14,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:14,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:14,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154251157] [2020-10-28 15:25:14,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:14,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:25:14,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804449315] [2020-10-28 15:25:14,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:25:14,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:14,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:25:14,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:25:14,689 INFO L87 Difference]: Start difference. First operand 1375 states and 1892 transitions. Second operand 10 states. [2020-10-28 15:25:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:17,655 INFO L93 Difference]: Finished difference Result 1425 states and 1950 transitions. [2020-10-28 15:25:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:25:17,656 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-28 15:25:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:17,663 INFO L225 Difference]: With dead ends: 1425 [2020-10-28 15:25:17,663 INFO L226 Difference]: Without dead ends: 1406 [2020-10-28 15:25:17,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:25:17,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2020-10-28 15:25:17,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1373. [2020-10-28 15:25:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2020-10-28 15:25:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1888 transitions. [2020-10-28 15:25:17,829 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1888 transitions. Word has length 46 [2020-10-28 15:25:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:17,829 INFO L481 AbstractCegarLoop]: Abstraction has 1373 states and 1888 transitions. [2020-10-28 15:25:17,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:25:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1888 transitions. [2020-10-28 15:25:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 15:25:17,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:17,831 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] [2020-10-28 15:25:17,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 15:25:17,831 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:17,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1809644312, now seen corresponding path program 1 times [2020-10-28 15:25:17,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:17,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272431959] [2020-10-28 15:25:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:17,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:18,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:22,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:22,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 15:25:22,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:25:22,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4674 [2020-10-28 15:25:22,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:22,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 15:25:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:25:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:22,688 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:22,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:22,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:22,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:22,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:22,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:22,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:25:22,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:22,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:22,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:22,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:22,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:22,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:22,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:22,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:22,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:22,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:22,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:22,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:22,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:22,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:22,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:22,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:22,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:22,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:25:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:22,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:22,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 15:25:22,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 15:25:22,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:22,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:25:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:22,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:22,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 15:25:22,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:25:22,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:22,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:22,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:22,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:25:22,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:22,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272431959] [2020-10-28 15:25:22,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:22,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:25:22,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116010948] [2020-10-28 15:25:22,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:25:22,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:22,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:25:22,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:25:22,981 INFO L87 Difference]: Start difference. First operand 1373 states and 1888 transitions. Second operand 8 states. [2020-10-28 15:25:24,113 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:25:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:25,532 INFO L93 Difference]: Finished difference Result 1447 states and 1980 transitions. [2020-10-28 15:25:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:25:25,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-28 15:25:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:25,540 INFO L225 Difference]: With dead ends: 1447 [2020-10-28 15:25:25,540 INFO L226 Difference]: Without dead ends: 1386 [2020-10-28 15:25:25,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:25:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2020-10-28 15:25:25,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1350. [2020-10-28 15:25:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1350 states. [2020-10-28 15:25:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1851 transitions. [2020-10-28 15:25:25,722 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1851 transitions. Word has length 47 [2020-10-28 15:25:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:25,722 INFO L481 AbstractCegarLoop]: Abstraction has 1350 states and 1851 transitions. [2020-10-28 15:25:25,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:25:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1851 transitions. [2020-10-28 15:25:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 15:25:25,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:25,724 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] [2020-10-28 15:25:25,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 15:25:25,725 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:25,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:25,725 INFO L82 PathProgramCache]: Analyzing trace with hash 786057154, now seen corresponding path program 1 times [2020-10-28 15:25:25,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:25,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796835990] [2020-10-28 15:25:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:25,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:25,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 15:25:25,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 15:25:25,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:25,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 15:25:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:25:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:26,066 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:26,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:26,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:25:26,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:26,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:26,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:26,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:26,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:26,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:26,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:26,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:25:26,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:26,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:26,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:26,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:26,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:26,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:26,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:26,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:25:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:26,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:26,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:26,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 15:25:26,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 15:25:26,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:26,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:25:26,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:26,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 15:25:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:26,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:26,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:26,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:26,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:26,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:26,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:26,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:26,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796835990] [2020-10-28 15:25:26,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:26,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:25:26,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524105440] [2020-10-28 15:25:26,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:25:26,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:26,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:25:26,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:25:26,340 INFO L87 Difference]: Start difference. First operand 1350 states and 1851 transitions. Second operand 10 states. [2020-10-28 15:25:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:28,682 INFO L93 Difference]: Finished difference Result 1400 states and 1909 transitions. [2020-10-28 15:25:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:25:28,688 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-28 15:25:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:28,694 INFO L225 Difference]: With dead ends: 1400 [2020-10-28 15:25:28,694 INFO L226 Difference]: Without dead ends: 1381 [2020-10-28 15:25:28,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:25:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-28 15:25:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1348. [2020-10-28 15:25:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1348 states. [2020-10-28 15:25:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1847 transitions. [2020-10-28 15:25:28,857 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1847 transitions. Word has length 48 [2020-10-28 15:25:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:28,857 INFO L481 AbstractCegarLoop]: Abstraction has 1348 states and 1847 transitions. [2020-10-28 15:25:28,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:25:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1847 transitions. [2020-10-28 15:25:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 15:25:28,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:28,860 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] [2020-10-28 15:25:28,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 15:25:28,860 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:28,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2024329408, now seen corresponding path program 1 times [2020-10-28 15:25:28,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:28,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184128971] [2020-10-28 15:25:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:28,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:29,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:29,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:29,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 15:25:29,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:25:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-28 15:25:29,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:29,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:25:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:25:29,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 15:25:29,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:29,433 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:29,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:29,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:29,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:29,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:29,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:25:29,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:29,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:29,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:29,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:29,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:29,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:29,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:29,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:25:29,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:29,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:29,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:25:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:29,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:29,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:29,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:29,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:29,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:25:29,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:29,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:25:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:29,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 15:25:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:29,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 15:25:29,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 15:25:29,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:29,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:25:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:29,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184128971] [2020-10-28 15:25:29,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:29,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:25:29,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373878561] [2020-10-28 15:25:29,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:25:29,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:29,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:25:29,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:25:29,714 INFO L87 Difference]: Start difference. First operand 1348 states and 1847 transitions. Second operand 10 states. [2020-10-28 15:25:29,996 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 15:25:30,441 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-28 15:25:30,827 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 15:25:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:34,501 INFO L93 Difference]: Finished difference Result 2062 states and 2752 transitions. [2020-10-28 15:25:34,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:25:34,506 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-28 15:25:34,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:34,514 INFO L225 Difference]: With dead ends: 2062 [2020-10-28 15:25:34,514 INFO L226 Difference]: Without dead ends: 1399 [2020-10-28 15:25:34,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:25:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2020-10-28 15:25:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1339. [2020-10-28 15:25:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-10-28 15:25:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1826 transitions. [2020-10-28 15:25:34,705 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1826 transitions. Word has length 49 [2020-10-28 15:25:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:34,705 INFO L481 AbstractCegarLoop]: Abstraction has 1339 states and 1826 transitions. [2020-10-28 15:25:34,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:25:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1826 transitions. [2020-10-28 15:25:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 15:25:34,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:34,707 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] [2020-10-28 15:25:34,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 15:25:34,708 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:34,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:34,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1868316799, now seen corresponding path program 1 times [2020-10-28 15:25:34,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:34,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612930319] [2020-10-28 15:25:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:35,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:35,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 15:25:35,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:25:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-28 15:25:35,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:35,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:25:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 15:25:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 15:25:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:35,710 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:35,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:35,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:35,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:35,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:35,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:25:35,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:35,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:35,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:35,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:35,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:35,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:35,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:35,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:35,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:35,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:35,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:35,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:35,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:35,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:35,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:35,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:25:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:35,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:35,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:25:35,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:25:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 15:25:35,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:35,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:25:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:25:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:36,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 15:25:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:36,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:36,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:36,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:36,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:36,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612930319] [2020-10-28 15:25:36,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:36,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:25:36,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413208907] [2020-10-28 15:25:36,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:25:36,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:36,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:25:36,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:25:36,069 INFO L87 Difference]: Start difference. First operand 1339 states and 1826 transitions. Second operand 12 states. [2020-10-28 15:25:36,395 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 15:25:36,605 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 15:25:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:39,032 INFO L93 Difference]: Finished difference Result 1400 states and 1897 transitions. [2020-10-28 15:25:39,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 15:25:39,033 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-28 15:25:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:39,041 INFO L225 Difference]: With dead ends: 1400 [2020-10-28 15:25:39,042 INFO L226 Difference]: Without dead ends: 1371 [2020-10-28 15:25:39,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-28 15:25:39,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2020-10-28 15:25:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1327. [2020-10-28 15:25:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-10-28 15:25:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1795 transitions. [2020-10-28 15:25:39,212 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1795 transitions. Word has length 51 [2020-10-28 15:25:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:39,213 INFO L481 AbstractCegarLoop]: Abstraction has 1327 states and 1795 transitions. [2020-10-28 15:25:39,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:25:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1795 transitions. [2020-10-28 15:25:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 15:25:39,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:39,216 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] [2020-10-28 15:25:39,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 15:25:39,216 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:39,216 INFO L82 PathProgramCache]: Analyzing trace with hash 358725051, now seen corresponding path program 1 times [2020-10-28 15:25:39,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:39,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086105842] [2020-10-28 15:25:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:39,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:42,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:42,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 15:25:42,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:25:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2735 [2020-10-28 15:25:42,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:42,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 15:25:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:25:42,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:42,188 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:42,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:42,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:42,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:25:42,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:42,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:42,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:42,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:42,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:42,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:42,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:42,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:42,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:42,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:42,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:42,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:42,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:42,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:42,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:42,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:42,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:42,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:42,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:42,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:42,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 15:25:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:42,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:42,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:25:42,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:42,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:25:42,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:42,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 15:25:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:25:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:42,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086105842] [2020-10-28 15:25:42,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:42,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:25:42,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698180476] [2020-10-28 15:25:42,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:25:42,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:42,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:25:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:25:42,327 INFO L87 Difference]: Start difference. First operand 1327 states and 1795 transitions. Second operand 8 states. [2020-10-28 15:25:42,478 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:25:43,163 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:25:45,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:45,562 INFO L93 Difference]: Finished difference Result 1452 states and 1920 transitions. [2020-10-28 15:25:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:25:45,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-28 15:25:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:45,567 INFO L225 Difference]: With dead ends: 1452 [2020-10-28 15:25:45,567 INFO L226 Difference]: Without dead ends: 936 [2020-10-28 15:25:45,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:25:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2020-10-28 15:25:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 877. [2020-10-28 15:25:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-28 15:25:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1136 transitions. [2020-10-28 15:25:45,677 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1136 transitions. Word has length 53 [2020-10-28 15:25:45,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:45,677 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1136 transitions. [2020-10-28 15:25:45,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:25:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1136 transitions. [2020-10-28 15:25:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 15:25:45,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:45,679 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] [2020-10-28 15:25:45,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 15:25:45,679 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:45,680 INFO L82 PathProgramCache]: Analyzing trace with hash 143463672, now seen corresponding path program 1 times [2020-10-28 15:25:45,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:45,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558916800] [2020-10-28 15:25:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:45,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:47,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:47,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 15:25:47,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:25:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-10-28 15:25:47,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:47,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:25:47,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 15:25:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:47,465 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:47,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:47,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:47,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:47,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:47,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:25:47,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:47,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:47,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:47,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:47,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:47,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:47,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:47,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:25:47,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:47,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:25:47,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:47,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:47,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:47,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:47,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:47,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:47,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:47,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:47,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:25:47,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:47,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:25:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:47,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:47,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:25:47,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 15:25:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:47,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 15:25:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:47,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:47,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:25:47,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:25:47,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:47,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:47,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:25:47,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:47,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558916800] [2020-10-28 15:25:47,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:47,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:25:47,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784402233] [2020-10-28 15:25:47,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:25:47,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:47,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:25:47,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:25:47,764 INFO L87 Difference]: Start difference. First operand 877 states and 1136 transitions. Second operand 12 states. [2020-10-28 15:25:47,910 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 15:25:48,116 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 15:25:49,582 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 15:25:49,938 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-28 15:25:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:51,209 INFO L93 Difference]: Finished difference Result 989 states and 1270 transitions. [2020-10-28 15:25:51,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:25:51,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-28 15:25:51,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:51,215 INFO L225 Difference]: With dead ends: 989 [2020-10-28 15:25:51,215 INFO L226 Difference]: Without dead ends: 979 [2020-10-28 15:25:51,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-10-28 15:25:51,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-10-28 15:25:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 877. [2020-10-28 15:25:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-28 15:25:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1134 transitions. [2020-10-28 15:25:51,328 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1134 transitions. Word has length 52 [2020-10-28 15:25:51,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:51,328 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1134 transitions. [2020-10-28 15:25:51,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:25:51,328 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1134 transitions. [2020-10-28 15:25:51,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 15:25:51,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:51,330 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] [2020-10-28 15:25:51,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 15:25:51,331 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:51,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:51,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1381135715, now seen corresponding path program 1 times [2020-10-28 15:25:51,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:51,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518255845] [2020-10-28 15:25:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:51,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:51,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:51,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 15:25:51,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-28 15:25:51,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:51,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:25:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 15:25:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:51,730 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:51,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:51,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:51,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:51,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:25:51,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:51,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:51,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:51,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:51,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:51,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:51,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:51,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:51,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:51,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:51,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:51,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:51,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:51,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:51,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:51,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:51,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:51,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:51,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:51,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:25:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:51,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:51,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 15:25:51,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:51,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 15:25:51,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:51,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:51,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:25:51,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:25:51,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:51,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:52,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:25:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:52,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:52,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:52,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:52,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:25:52,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:52,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:25:52,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:52,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518255845] [2020-10-28 15:25:52,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:52,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 15:25:52,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758967934] [2020-10-28 15:25:52,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:25:52,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:52,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:25:52,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:25:52,050 INFO L87 Difference]: Start difference. First operand 877 states and 1134 transitions. Second operand 11 states. [2020-10-28 15:25:55,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:55,034 INFO L93 Difference]: Finished difference Result 926 states and 1188 transitions. [2020-10-28 15:25:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:25:55,035 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-28 15:25:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:55,040 INFO L225 Difference]: With dead ends: 926 [2020-10-28 15:25:55,041 INFO L226 Difference]: Without dead ends: 900 [2020-10-28 15:25:55,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:25:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-10-28 15:25:55,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 877. [2020-10-28 15:25:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-28 15:25:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1133 transitions. [2020-10-28 15:25:55,153 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1133 transitions. Word has length 52 [2020-10-28 15:25:55,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:55,153 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1133 transitions. [2020-10-28 15:25:55,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:25:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1133 transitions. [2020-10-28 15:25:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 15:25:55,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:55,156 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] [2020-10-28 15:25:55,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 15:25:55,156 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:55,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1902510249, now seen corresponding path program 1 times [2020-10-28 15:25:55,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:55,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703171143] [2020-10-28 15:25:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:55,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:56,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:56,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 15:25:56,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:25:56,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1406 [2020-10-28 15:25:56,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:56,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:25:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:25:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:25:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:56,762 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:25:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:56,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:56,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:56,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:56,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:25:56,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:56,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:56,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:56,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:56,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:56,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:56,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:56,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:56,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:25:56,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:56,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:56,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:25:56,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:56,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:56,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:56,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:56,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:56,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:25:56,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:25:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:56,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:56,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:56,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:25:56,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:56,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 15:25:56,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:56,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:25:56,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 15:25:56,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 15:25:56,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:57,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:57,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:57,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:25:57,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:25:57,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:57,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:25:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:25:57,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:25:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:57,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703171143] [2020-10-28 15:25:57,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:57,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 15:25:57,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347408159] [2020-10-28 15:25:57,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 15:25:57,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:57,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 15:25:57,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:25:57,083 INFO L87 Difference]: Start difference. First operand 877 states and 1133 transitions. Second operand 13 states. [2020-10-28 15:25:57,418 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-10-28 15:25:57,617 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 15:25:58,003 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 15:25:58,298 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 15:26:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:01,543 INFO L93 Difference]: Finished difference Result 1098 states and 1429 transitions. [2020-10-28 15:26:01,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 15:26:01,543 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-28 15:26:01,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:01,550 INFO L225 Difference]: With dead ends: 1098 [2020-10-28 15:26:01,550 INFO L226 Difference]: Without dead ends: 1025 [2020-10-28 15:26:01,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2020-10-28 15:26:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-10-28 15:26:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 867. [2020-10-28 15:26:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-28 15:26:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1134 transitions. [2020-10-28 15:26:01,672 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1134 transitions. Word has length 53 [2020-10-28 15:26:01,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:01,673 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1134 transitions. [2020-10-28 15:26:01,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 15:26:01,673 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1134 transitions. [2020-10-28 15:26:01,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 15:26:01,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:01,675 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] [2020-10-28 15:26:01,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 15:26:01,675 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:01,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:01,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1209783546, now seen corresponding path program 1 times [2020-10-28 15:26:01,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:01,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209795995] [2020-10-28 15:26:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:01,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:01,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:01,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 15:26:01,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:01,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 15:26:01,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:01,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:26:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:26:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 15:26:01,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:02,082 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:02,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:02,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:02,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:26:02,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:02,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:02,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:02,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:02,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:02,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:02,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:26:02,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:02,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:26:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:02,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:02,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:02,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:02,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:02,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:02,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:26:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:02,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:02,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:02,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 15:26:02,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:02,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 15:26:02,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:02,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:26:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 15:26:02,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 15:26:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:02,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:02,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:26:02,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:26:02,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:02,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:26:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:26:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:26:02,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:02,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209795995] [2020-10-28 15:26:02,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:02,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:26:02,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739044212] [2020-10-28 15:26:02,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:26:02,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:02,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:26:02,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:26:02,401 INFO L87 Difference]: Start difference. First operand 867 states and 1134 transitions. Second operand 12 states. [2020-10-28 15:26:02,734 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-10-28 15:26:02,919 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:26:03,309 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 15:26:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:05,744 INFO L93 Difference]: Finished difference Result 928 states and 1206 transitions. [2020-10-28 15:26:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:26:05,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-28 15:26:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:05,749 INFO L225 Difference]: With dead ends: 928 [2020-10-28 15:26:05,750 INFO L226 Difference]: Without dead ends: 846 [2020-10-28 15:26:05,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-10-28 15:26:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-10-28 15:26:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 810. [2020-10-28 15:26:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-10-28 15:26:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1058 transitions. [2020-10-28 15:26:05,870 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1058 transitions. Word has length 53 [2020-10-28 15:26:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:05,871 INFO L481 AbstractCegarLoop]: Abstraction has 810 states and 1058 transitions. [2020-10-28 15:26:05,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:26:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1058 transitions. [2020-10-28 15:26:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 15:26:05,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:05,873 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] [2020-10-28 15:26:05,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 15:26:05,874 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:05,874 INFO L82 PathProgramCache]: Analyzing trace with hash 254966237, now seen corresponding path program 1 times [2020-10-28 15:26:05,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:05,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53478753] [2020-10-28 15:26:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:06,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:06,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 15:26:06,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-28 15:26:06,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:06,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:26:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 15:26:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:26:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:06,307 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:06,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:06,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:06,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:06,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:06,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:06,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:06,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:06,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:06,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:06,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:06,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:06,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:06,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:06,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:06,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:06,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:06,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:06,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 15:26:06,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 15:26:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:06,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:26:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:06,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 15:26:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:06,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:06,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:26:06,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:06,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:26:06,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:06,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:26:06,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:06,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53478753] [2020-10-28 15:26:06,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:06,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 15:26:06,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377886912] [2020-10-28 15:26:06,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 15:26:06,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:06,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 15:26:06,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:26:06,628 INFO L87 Difference]: Start difference. First operand 810 states and 1058 transitions. Second operand 13 states. [2020-10-28 15:26:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:09,494 INFO L93 Difference]: Finished difference Result 856 states and 1110 transitions. [2020-10-28 15:26:09,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:26:09,496 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-28 15:26:09,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:09,499 INFO L225 Difference]: With dead ends: 856 [2020-10-28 15:26:09,499 INFO L226 Difference]: Without dead ends: 837 [2020-10-28 15:26:09,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:26:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-10-28 15:26:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 806. [2020-10-28 15:26:09,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-10-28 15:26:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1052 transitions. [2020-10-28 15:26:09,595 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1052 transitions. Word has length 54 [2020-10-28 15:26:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:09,596 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 1052 transitions. [2020-10-28 15:26:09,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 15:26:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1052 transitions. [2020-10-28 15:26:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 15:26:09,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:09,598 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] [2020-10-28 15:26:09,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 15:26:09,598 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:09,598 INFO L82 PathProgramCache]: Analyzing trace with hash -462489160, now seen corresponding path program 1 times [2020-10-28 15:26:09,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:09,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972117244] [2020-10-28 15:26:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:09,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:09,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:09,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 15:26:09,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:09,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 15:26:09,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:09,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:26:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 15:26:09,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 15:26:09,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:09,976 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:09,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:09,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:09,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:09,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:09,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:09,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:10,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:10,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:10,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:10,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:10,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:10,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:10,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:10,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:10,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:10,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:10,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:10,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:10,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:10,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:10,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 15:26:10,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 15:26:10,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:10,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:26:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 15:26:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:26:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:10,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:10,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 15:26:10,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:26:10,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:10,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:10,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 15:26:10,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:10,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:26:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:10,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:10,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:10,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:10,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:10,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:10,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:10,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:10,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:10,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972117244] [2020-10-28 15:26:10,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:10,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 15:26:10,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224766891] [2020-10-28 15:26:10,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:26:10,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:10,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:26:10,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:26:10,294 INFO L87 Difference]: Start difference. First operand 806 states and 1052 transitions. Second operand 14 states. [2020-10-28 15:26:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:12,663 INFO L93 Difference]: Finished difference Result 852 states and 1104 transitions. [2020-10-28 15:26:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 15:26:12,664 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-28 15:26:12,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:12,668 INFO L225 Difference]: With dead ends: 852 [2020-10-28 15:26:12,668 INFO L226 Difference]: Without dead ends: 823 [2020-10-28 15:26:12,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:26:12,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2020-10-28 15:26:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 791. [2020-10-28 15:26:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-28 15:26:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1033 transitions. [2020-10-28 15:26:12,777 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1033 transitions. Word has length 56 [2020-10-28 15:26:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:12,777 INFO L481 AbstractCegarLoop]: Abstraction has 791 states and 1033 transitions. [2020-10-28 15:26:12,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:26:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1033 transitions. [2020-10-28 15:26:12,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 15:26:12,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:12,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:12,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 15:26:12,779 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:12,780 INFO L82 PathProgramCache]: Analyzing trace with hash 119547151, now seen corresponding path program 1 times [2020-10-28 15:26:12,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:12,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756132492] [2020-10-28 15:26:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:13,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:13,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 15:26:13,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-28 15:26:13,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:13,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 15:26:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:26:13,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:13,163 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:13,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:13,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:13,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:13,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:26:13,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:13,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:13,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:13,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:13,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:26:13,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:13,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:13,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:13,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:13,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:13,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:13,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:13,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:13,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:13,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:13,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 29 [2020-10-28 15:26:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 15:26:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:13,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:13,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:26:13,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:13,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:13,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:26:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:13,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:13,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:13,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:13,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:13,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 15:26:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:13,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:13,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:13,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:13,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:13,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:13,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:26:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:13,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756132492] [2020-10-28 15:26:13,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:13,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:26:13,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575930] [2020-10-28 15:26:13,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:26:13,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:13,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:26:13,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:26:13,330 INFO L87 Difference]: Start difference. First operand 791 states and 1033 transitions. Second operand 8 states. [2020-10-28 15:26:13,459 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 15:26:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:15,343 INFO L93 Difference]: Finished difference Result 1128 states and 1462 transitions. [2020-10-28 15:26:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:26:15,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-10-28 15:26:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:15,347 INFO L225 Difference]: With dead ends: 1128 [2020-10-28 15:26:15,347 INFO L226 Difference]: Without dead ends: 765 [2020-10-28 15:26:15,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:26:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-10-28 15:26:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 727. [2020-10-28 15:26:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-28 15:26:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 935 transitions. [2020-10-28 15:26:15,458 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 935 transitions. Word has length 62 [2020-10-28 15:26:15,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:15,459 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 935 transitions. [2020-10-28 15:26:15,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:26:15,459 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 935 transitions. [2020-10-28 15:26:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 15:26:15,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:15,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:15,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 15:26:15,461 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:15,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1302576258, now seen corresponding path program 1 times [2020-10-28 15:26:15,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:15,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594760384] [2020-10-28 15:26:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:15,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:15,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:15,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 15:26:15,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:15,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 15:26:15,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:15,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 15:26:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:26:15,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:15,830 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:15,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:15,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:15,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:26:15,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:15,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:15,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:15,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:15,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:15,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:15,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:15,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:15,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:15,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:15,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:15,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:15,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:15,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:15,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:15,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:15,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 15:26:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:15,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 15:26:15,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 15:26:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:15,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 15:26:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:26:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:26:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:16,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:16,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:16,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:26:16,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:16,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:26:16,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:16,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:16,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:16,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:16,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:26:16,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:16,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:26:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:16,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:16,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:16,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:16,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:16,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:16,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:16,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:16,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:16,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:16,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594760384] [2020-10-28 15:26:16,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:16,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:26:16,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170218710] [2020-10-28 15:26:16,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:26:16,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:16,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:26:16,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:26:16,046 INFO L87 Difference]: Start difference. First operand 727 states and 935 transitions. Second operand 10 states. [2020-10-28 15:26:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:17,836 INFO L93 Difference]: Finished difference Result 1052 states and 1364 transitions. [2020-10-28 15:26:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:26:17,836 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-28 15:26:17,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:17,839 INFO L225 Difference]: With dead ends: 1052 [2020-10-28 15:26:17,839 INFO L226 Difference]: Without dead ends: 684 [2020-10-28 15:26:17,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:26:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-28 15:26:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 631. [2020-10-28 15:26:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-10-28 15:26:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 796 transitions. [2020-10-28 15:26:17,933 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 796 transitions. Word has length 65 [2020-10-28 15:26:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:17,934 INFO L481 AbstractCegarLoop]: Abstraction has 631 states and 796 transitions. [2020-10-28 15:26:17,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:26:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 796 transitions. [2020-10-28 15:26:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 15:26:17,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:17,936 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] [2020-10-28 15:26:17,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 15:26:17,936 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:17,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1840004363, now seen corresponding path program 1 times [2020-10-28 15:26:17,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:17,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12439842] [2020-10-28 15:26:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:18,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:18,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 15:26:18,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 15:26:18,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:18,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:26:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 15:26:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:26:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:18,359 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:18,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:18,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:18,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:18,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:26:18,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:18,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:18,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:18,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:18,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:18,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:18,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:26:18,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:18,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:18,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:18,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:18,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:18,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:18,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:18,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:18,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:18,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:18,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:18,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:18,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:26:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:18,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:18,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:18,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 15:26:18,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 15:26:18,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:18,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:26:18,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 15:26:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:18,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 15:26:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:18,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:18,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:26:18,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:18,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:26:18,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:18,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:26:18,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:18,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12439842] [2020-10-28 15:26:18,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:18,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 15:26:18,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612188911] [2020-10-28 15:26:18,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 15:26:18,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:18,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 15:26:18,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:26:18,683 INFO L87 Difference]: Start difference. First operand 631 states and 796 transitions. Second operand 13 states. [2020-10-28 15:26:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:21,529 INFO L93 Difference]: Finished difference Result 675 states and 846 transitions. [2020-10-28 15:26:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:26:21,530 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-28 15:26:21,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:21,533 INFO L225 Difference]: With dead ends: 675 [2020-10-28 15:26:21,533 INFO L226 Difference]: Without dead ends: 656 [2020-10-28 15:26:21,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:26:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-10-28 15:26:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 627. [2020-10-28 15:26:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-10-28 15:26:21,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 790 transitions. [2020-10-28 15:26:21,599 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 790 transitions. Word has length 59 [2020-10-28 15:26:21,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:21,599 INFO L481 AbstractCegarLoop]: Abstraction has 627 states and 790 transitions. [2020-10-28 15:26:21,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 15:26:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 790 transitions. [2020-10-28 15:26:21,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 15:26:21,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:21,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:21,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 15:26:21,601 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:21,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2133172757, now seen corresponding path program 1 times [2020-10-28 15:26:21,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:21,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058979013] [2020-10-28 15:26:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:21,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:21,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 15:26:21,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 15:26:21,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:21,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:26:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 15:26:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 15:26:21,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:21,986 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:21,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:21,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:21,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:21,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:21,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:26:21,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:21,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:21,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:22,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:22,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:22,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:22,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:26:22,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:22,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:22,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:22,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:22,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:22,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:22,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:22,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:22,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:22,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:22,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:22,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:26:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:22,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:22,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:22,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 15:26:22,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:22,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 15:26:22,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:22,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:22,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 15:26:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 15:26:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:22,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:22,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:22,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:22,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:22,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:22,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 15:26:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:22,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:22,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:22,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:22,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:22,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:22,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:26:22,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:22,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058979013] [2020-10-28 15:26:22,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:22,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:26:22,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109520660] [2020-10-28 15:26:22,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:26:22,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:22,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:26:22,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:26:22,257 INFO L87 Difference]: Start difference. First operand 627 states and 790 transitions. Second operand 12 states. [2020-10-28 15:26:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:24,618 INFO L93 Difference]: Finished difference Result 688 states and 860 transitions. [2020-10-28 15:26:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 15:26:24,618 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-28 15:26:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:24,621 INFO L225 Difference]: With dead ends: 688 [2020-10-28 15:26:24,621 INFO L226 Difference]: Without dead ends: 659 [2020-10-28 15:26:24,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:26:24,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-10-28 15:26:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 618. [2020-10-28 15:26:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-28 15:26:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 779 transitions. [2020-10-28 15:26:24,694 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 779 transitions. Word has length 61 [2020-10-28 15:26:24,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:24,694 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 779 transitions. [2020-10-28 15:26:24,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:26:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 779 transitions. [2020-10-28 15:26:24,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 15:26:24,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:24,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:24,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 15:26:24,696 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:24,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:24,696 INFO L82 PathProgramCache]: Analyzing trace with hash 934475552, now seen corresponding path program 1 times [2020-10-28 15:26:24,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:24,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323916312] [2020-10-28 15:26:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:24,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:25,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 15:26:26,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:26:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1839 [2020-10-28 15:26:26,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:26:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 15:26:26,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,742 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:26,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:26,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:26,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:26,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:26:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:26,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:26,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:26,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:26:26,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:27,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:27,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:26:27,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:26:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-28 15:26:27,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:27,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 15:26:27,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:26:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:27,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:27,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:27,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 15:26:27,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:26:27,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:27,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:27,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:27,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:27,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:27,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:26:27,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:27,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:27,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:26:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:27,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323916312] [2020-10-28 15:26:27,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:27,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 15:26:27,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823902819] [2020-10-28 15:26:27,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 15:26:27,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:27,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 15:26:27,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:26:27,261 INFO L87 Difference]: Start difference. First operand 618 states and 779 transitions. Second operand 13 states. [2020-10-28 15:26:27,414 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 15:26:27,633 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 15:26:29,714 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-28 15:26:29,946 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 15:26:30,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:30,879 INFO L93 Difference]: Finished difference Result 666 states and 831 transitions. [2020-10-28 15:26:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 15:26:30,879 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-28 15:26:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:30,882 INFO L225 Difference]: With dead ends: 666 [2020-10-28 15:26:30,883 INFO L226 Difference]: Without dead ends: 660 [2020-10-28 15:26:30,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2020-10-28 15:26:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-28 15:26:30,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 618. [2020-10-28 15:26:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-28 15:26:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 778 transitions. [2020-10-28 15:26:30,952 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 778 transitions. Word has length 62 [2020-10-28 15:26:30,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:30,952 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 778 transitions. [2020-10-28 15:26:30,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 15:26:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 778 transitions. [2020-10-28 15:26:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 15:26:30,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:30,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:30,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 15:26:30,954 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:30,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:30,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1544852859, now seen corresponding path program 1 times [2020-10-28 15:26:30,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:30,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826675139] [2020-10-28 15:26:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 15:26:31,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 15:26:31,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:26:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 15:26:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:31,224 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:31,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:31,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:31,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:26:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:31,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:26:31,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:31,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 15:26:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 15:26:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:26:31,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 15:26:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:26:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:31,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:26:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:26:31,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:31,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:31,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:31,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:26:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:31,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:31,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:31,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:31,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:31,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:26:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:31,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:31,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:26:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:31,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826675139] [2020-10-28 15:26:31,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:31,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 15:26:31,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419349641] [2020-10-28 15:26:31,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:26:31,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:31,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:26:31,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:26:31,426 INFO L87 Difference]: Start difference. First operand 618 states and 778 transitions. Second operand 11 states. [2020-10-28 15:26:31,620 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:26:31,797 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:26:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:34,070 INFO L93 Difference]: Finished difference Result 886 states and 1109 transitions. [2020-10-28 15:26:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 15:26:34,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-28 15:26:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:34,074 INFO L225 Difference]: With dead ends: 886 [2020-10-28 15:26:34,074 INFO L226 Difference]: Without dead ends: 601 [2020-10-28 15:26:34,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-28 15:26:34,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-28 15:26:34,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 568. [2020-10-28 15:26:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-28 15:26:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 699 transitions. [2020-10-28 15:26:34,170 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 699 transitions. Word has length 69 [2020-10-28 15:26:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:34,170 INFO L481 AbstractCegarLoop]: Abstraction has 568 states and 699 transitions. [2020-10-28 15:26:34,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:26:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 699 transitions. [2020-10-28 15:26:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 15:26:34,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:34,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:34,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 15:26:34,172 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:34,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:34,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1748455351, now seen corresponding path program 1 times [2020-10-28 15:26:34,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:34,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890222809] [2020-10-28 15:26:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:34,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:34,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:34,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:35,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 15:26:35,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:26:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-10-28 15:26:35,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:35,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:26:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 15:26:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:35,837 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:35,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:35,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:35,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:35,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:26:35,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:35,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:35,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:35,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:35,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:35,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:35,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:35,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:35,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:35,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:35,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:26:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:35,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:35,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:35,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:35,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:35,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:35,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:35,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:26:35,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:35,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:26:36,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:26:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 15:26:36,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 15:26:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:26:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 15:26:36,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:36,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:26:36,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:36,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:36,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:36,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:26:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:36,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890222809] [2020-10-28 15:26:36,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:36,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:26:36,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57174691] [2020-10-28 15:26:36,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:26:36,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:36,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:26:36,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:26:36,309 INFO L87 Difference]: Start difference. First operand 568 states and 699 transitions. Second operand 12 states. [2020-10-28 15:26:36,487 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 15:26:36,721 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 15:26:38,743 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-28 15:26:39,074 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-28 15:26:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:40,063 INFO L93 Difference]: Finished difference Result 610 states and 745 transitions. [2020-10-28 15:26:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 15:26:40,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-28 15:26:40,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:40,067 INFO L225 Difference]: With dead ends: 610 [2020-10-28 15:26:40,067 INFO L226 Difference]: Without dead ends: 604 [2020-10-28 15:26:40,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-10-28 15:26:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-10-28 15:26:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 568. [2020-10-28 15:26:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-28 15:26:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 698 transitions. [2020-10-28 15:26:40,146 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 698 transitions. Word has length 63 [2020-10-28 15:26:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:40,146 INFO L481 AbstractCegarLoop]: Abstraction has 568 states and 698 transitions. [2020-10-28 15:26:40,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:26:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 698 transitions. [2020-10-28 15:26:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 15:26:40,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:40,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:40,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 15:26:40,148 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:40,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:40,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1924199913, now seen corresponding path program 1 times [2020-10-28 15:26:40,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:40,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913057900] [2020-10-28 15:26:40,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:40,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:40,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 15:26:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:26:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-28 15:26:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:40,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:26:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 15:26:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 15:26:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:40,894 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:40,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:40,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:40,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:40,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:40,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:40,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:40,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-10-28 15:26:40,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:40,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:40,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:40,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:40,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:40,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:40,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:41,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:41,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:41,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:41,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:41,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:41,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:41,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:41,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:41,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:41,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:41,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:41,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:41,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:41,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:41,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:26:41,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:26:41,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 15:26:41,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:41,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:26:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:26:41,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:41,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:26:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:41,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:41,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:41,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 15:26:41,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:26:41,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:41,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:26:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:41,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:41,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:41,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:41,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:41,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:41,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:26:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:41,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913057900] [2020-10-28 15:26:41,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:41,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 15:26:41,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542224711] [2020-10-28 15:26:41,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:26:41,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:41,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:26:41,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:26:41,385 INFO L87 Difference]: Start difference. First operand 568 states and 698 transitions. Second operand 14 states. [2020-10-28 15:26:44,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:44,761 INFO L93 Difference]: Finished difference Result 610 states and 746 transitions. [2020-10-28 15:26:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:26:44,762 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-28 15:26:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:44,765 INFO L225 Difference]: With dead ends: 610 [2020-10-28 15:26:44,765 INFO L226 Difference]: Without dead ends: 587 [2020-10-28 15:26:44,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-28 15:26:44,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-10-28 15:26:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 560. [2020-10-28 15:26:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-28 15:26:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 688 transitions. [2020-10-28 15:26:44,839 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 688 transitions. Word has length 64 [2020-10-28 15:26:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:44,839 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 688 transitions. [2020-10-28 15:26:44,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:26:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 688 transitions. [2020-10-28 15:26:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 15:26:44,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:44,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:44,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 15:26:44,840 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:44,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:44,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1474181079, now seen corresponding path program 1 times [2020-10-28 15:26:44,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:44,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422611022] [2020-10-28 15:26:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:45,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:45,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 15:26:45,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:26:45,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-28 15:26:45,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:45,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:26:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 15:26:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:26:45,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:45,825 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:45,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:45,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:45,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:45,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:26:45,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:45,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:45,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:45,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:45,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:45,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:45,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:45,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:45,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:45,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:45,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:45,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:45,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:45,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:45,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:45,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:45,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:45,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:26:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:46,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:46,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 15:26:46,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:26:46,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-28 15:26:46,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:46,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:46,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:26:46,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 15:26:46,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:26:46,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:26:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:46,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:46,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:26:46,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:26:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 15:26:46,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:46,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:46,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:26:46,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:46,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 15:26:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:46,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:46,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 15:26:46,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:46,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:46,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:46,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:46,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:46,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:46,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:46,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:46,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422611022] [2020-10-28 15:26:46,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:46,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:26:46,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374873432] [2020-10-28 15:26:46,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:26:46,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:46,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:26:46,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:26:46,455 INFO L87 Difference]: Start difference. First operand 560 states and 688 transitions. Second operand 12 states. [2020-10-28 15:26:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:49,363 INFO L93 Difference]: Finished difference Result 594 states and 727 transitions. [2020-10-28 15:26:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:26:49,364 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-28 15:26:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:49,366 INFO L225 Difference]: With dead ends: 594 [2020-10-28 15:26:49,367 INFO L226 Difference]: Without dead ends: 553 [2020-10-28 15:26:49,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:26:49,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-10-28 15:26:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 530. [2020-10-28 15:26:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-10-28 15:26:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 645 transitions. [2020-10-28 15:26:49,435 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 645 transitions. Word has length 64 [2020-10-28 15:26:49,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:49,435 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 645 transitions. [2020-10-28 15:26:49,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:26:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 645 transitions. [2020-10-28 15:26:49,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 15:26:49,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:49,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:49,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 15:26:49,437 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:49,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:49,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1343078112, now seen corresponding path program 1 times [2020-10-28 15:26:49,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:49,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523002333] [2020-10-28 15:26:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:49,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:49,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 15:26:49,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:26:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-28 15:26:49,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:49,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 15:26:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:26:49,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:49,838 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:49,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:49,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:49,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:49,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:49,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:26:49,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:49,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:49,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:49,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:49,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:49,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:49,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:49,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:49,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:49,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:49,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:49,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:49,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:49,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:49,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 15:26:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:49,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:49,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:26:49,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 15:26:49,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:49,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 15:26:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:26:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:26:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:49,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:49,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:26:49,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:49,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:49,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:49,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:49,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:26:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:49,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:49,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:49,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:49,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:49,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:49,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:26:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:50,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:50,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:50,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 15:26:50,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:50,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:50,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523002333] [2020-10-28 15:26:50,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:50,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 15:26:50,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693530678] [2020-10-28 15:26:50,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:26:50,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:50,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:26:50,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:26:50,025 INFO L87 Difference]: Start difference. First operand 530 states and 645 transitions. Second operand 9 states. [2020-10-28 15:26:50,616 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 15:26:51,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:51,891 INFO L93 Difference]: Finished difference Result 838 states and 1040 transitions. [2020-10-28 15:26:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:26:51,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-28 15:26:51,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:51,895 INFO L225 Difference]: With dead ends: 838 [2020-10-28 15:26:51,895 INFO L226 Difference]: Without dead ends: 581 [2020-10-28 15:26:51,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:26:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-28 15:26:51,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 533. [2020-10-28 15:26:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-10-28 15:26:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 648 transitions. [2020-10-28 15:26:51,959 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 648 transitions. Word has length 71 [2020-10-28 15:26:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:51,959 INFO L481 AbstractCegarLoop]: Abstraction has 533 states and 648 transitions. [2020-10-28 15:26:51,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:26:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 648 transitions. [2020-10-28 15:26:51,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 15:26:51,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:51,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:51,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 15:26:51,960 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:51,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:51,960 INFO L82 PathProgramCache]: Analyzing trace with hash 2098203033, now seen corresponding path program 1 times [2020-10-28 15:26:51,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:51,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559873053] [2020-10-28 15:26:51,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:52,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:52,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 15:26:52,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:52,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 15:26:52,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:52,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 15:26:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:26:52,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:52,213 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:52,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:52,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:52,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:52,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:26:52,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:52,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:52,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:52,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:52,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:52,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:52,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:52,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:52,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:52,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:52,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:52,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:52,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:52,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:52,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:52,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:52,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:52,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:26:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:52,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:52,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:52,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:26:52,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:52,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 15:26:52,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:52,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 15:26:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:26:52,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 15:26:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:52,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:52,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 15:26:52,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:52,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:26:52,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:52,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:52,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:26:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:52,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:26:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:52,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:52,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:52,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:52,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:52,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 15:26:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:52,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559873053] [2020-10-28 15:26:52,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:52,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 15:26:52,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186884516] [2020-10-28 15:26:52,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:26:52,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:52,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:26:52,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:26:52,462 INFO L87 Difference]: Start difference. First operand 533 states and 648 transitions. Second operand 11 states. [2020-10-28 15:26:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:54,526 INFO L93 Difference]: Finished difference Result 571 states and 693 transitions. [2020-10-28 15:26:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:26:54,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-28 15:26:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:54,529 INFO L225 Difference]: With dead ends: 571 [2020-10-28 15:26:54,529 INFO L226 Difference]: Without dead ends: 545 [2020-10-28 15:26:54,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:26:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-10-28 15:26:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 513. [2020-10-28 15:26:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-28 15:26:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 626 transitions. [2020-10-28 15:26:54,608 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 626 transitions. Word has length 65 [2020-10-28 15:26:54,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:54,608 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 626 transitions. [2020-10-28 15:26:54,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:26:54,608 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 626 transitions. [2020-10-28 15:26:54,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 15:26:54,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:54,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:54,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 15:26:54,610 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:54,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1476721176, now seen corresponding path program 1 times [2020-10-28 15:26:54,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:54,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647323618] [2020-10-28 15:26:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:54,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:54,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 15:26:54,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-28 15:26:54,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:54,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:26:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 15:26:54,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:26:54,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:26:55,032 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:55,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:55,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:55,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:55,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:55,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:26:55,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:55,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:55,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:55,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:55,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:55,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:55,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:55,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:55,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:55,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:55,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:55,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:55,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:55,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:55,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:55,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:55,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:55,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:55,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:55,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:55,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:26:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:55,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:55,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:55,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:26:55,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:55,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 15:26:55,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:55,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:26:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:26:55,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:55,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:55,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:55,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:26:55,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:26:55,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:55,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:26:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:55,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647323618] [2020-10-28 15:26:55,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:55,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 15:26:55,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864824714] [2020-10-28 15:26:55,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:26:55,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:55,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:26:55,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:26:55,316 INFO L87 Difference]: Start difference. First operand 513 states and 626 transitions. Second operand 14 states. [2020-10-28 15:26:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:57,868 INFO L93 Difference]: Finished difference Result 558 states and 678 transitions. [2020-10-28 15:26:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:26:57,869 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-28 15:26:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:57,872 INFO L225 Difference]: With dead ends: 558 [2020-10-28 15:26:57,872 INFO L226 Difference]: Without dead ends: 536 [2020-10-28 15:26:57,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:26:57,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-10-28 15:26:57,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 509. [2020-10-28 15:26:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-28 15:26:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 620 transitions. [2020-10-28 15:26:57,924 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 620 transitions. Word has length 64 [2020-10-28 15:26:57,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:57,925 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 620 transitions. [2020-10-28 15:26:57,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:26:57,925 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 620 transitions. [2020-10-28 15:26:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 15:26:57,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:57,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:57,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 15:26:57,926 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash -975497753, now seen corresponding path program 1 times [2020-10-28 15:26:57,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:57,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071870870] [2020-10-28 15:26:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:58,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 15:26:58,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:26:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 15:26:58,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:58,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:26:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-28 15:26:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:26:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:58,293 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:26:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:58,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:58,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:58,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:26:58,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:58,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:58,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:58,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:58,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:58,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:58,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:58,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:58,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:58,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:58,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:58,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:58,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 15:26:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:58,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:58,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:26:58,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:26:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 15:26:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:58,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 15:26:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:26:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:58,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:58,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:26:58,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:58,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:58,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:26:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:58,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:58,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:58,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:58,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:58,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:26:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:58,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:58,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:58,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:58,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:58,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:58,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071870870] [2020-10-28 15:26:58,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:58,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:26:58,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747555010] [2020-10-28 15:26:58,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:26:58,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:58,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:26:58,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:26:58,505 INFO L87 Difference]: Start difference. First operand 509 states and 620 transitions. Second operand 12 states. [2020-10-28 15:26:59,344 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 15:27:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:01,041 INFO L93 Difference]: Finished difference Result 788 states and 971 transitions. [2020-10-28 15:27:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:27:01,042 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-28 15:27:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:01,044 INFO L225 Difference]: With dead ends: 788 [2020-10-28 15:27:01,045 INFO L226 Difference]: Without dead ends: 561 [2020-10-28 15:27:01,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:27:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-28 15:27:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 509. [2020-10-28 15:27:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-28 15:27:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 618 transitions. [2020-10-28 15:27:01,111 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 618 transitions. Word has length 72 [2020-10-28 15:27:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:01,111 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 618 transitions. [2020-10-28 15:27:01,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:27:01,112 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 618 transitions. [2020-10-28 15:27:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 15:27:01,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:01,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:01,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 15:27:01,113 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:01,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:01,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1128079373, now seen corresponding path program 1 times [2020-10-28 15:27:01,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:01,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127818918] [2020-10-28 15:27:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:27:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:01,490 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:01,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:01,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:01,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:27:01,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:01,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:01,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:01,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:01,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:01,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:01,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:01,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:01,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:01,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:01,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:01,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:27:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:01,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:01,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:01,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 15:27:01,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 15:27:01,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:01,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:27:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 15:27:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:01,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:27:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:01,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:01,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:01,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:27:01,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:01,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:27:01,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:01,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:01,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:01,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:01,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:27:01,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:01,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127818918] [2020-10-28 15:27:01,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:01,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 15:27:01,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678172730] [2020-10-28 15:27:01,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 15:27:01,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:01,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 15:27:01,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:27:01,767 INFO L87 Difference]: Start difference. First operand 509 states and 618 transitions. Second operand 13 states. [2020-10-28 15:27:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:03,693 INFO L93 Difference]: Finished difference Result 548 states and 663 transitions. [2020-10-28 15:27:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:27:03,694 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-28 15:27:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:03,696 INFO L225 Difference]: With dead ends: 548 [2020-10-28 15:27:03,696 INFO L226 Difference]: Without dead ends: 511 [2020-10-28 15:27:03,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:27:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-10-28 15:27:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 484. [2020-10-28 15:27:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-28 15:27:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 588 transitions. [2020-10-28 15:27:03,747 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 588 transitions. Word has length 65 [2020-10-28 15:27:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:03,747 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 588 transitions. [2020-10-28 15:27:03,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 15:27:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 588 transitions. [2020-10-28 15:27:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 15:27:03,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:03,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:03,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 15:27:03,749 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:03,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:03,749 INFO L82 PathProgramCache]: Analyzing trace with hash 40091291, now seen corresponding path program 1 times [2020-10-28 15:27:03,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:03,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47297356] [2020-10-28 15:27:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:03,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:03,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:03,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 15:27:03,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:03,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 15:27:03,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:03,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:27:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 15:27:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:27:03,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:04,085 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:04,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:04,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:04,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:27:04,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:04,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:04,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:04,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:04,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:27:04,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:04,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:04,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:04,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:04,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:27:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:04,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:04,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:27:04,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:04,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 15:27:04,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:04,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:27:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 15:27:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:04,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:27:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:04,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:04,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:27:04,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:27:04,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:04,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:27:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:04,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47297356] [2020-10-28 15:27:04,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:04,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 15:27:04,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666335547] [2020-10-28 15:27:04,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:27:04,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:04,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:27:04,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:27:04,366 INFO L87 Difference]: Start difference. First operand 484 states and 588 transitions. Second operand 14 states. [2020-10-28 15:27:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:06,674 INFO L93 Difference]: Finished difference Result 529 states and 640 transitions. [2020-10-28 15:27:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:27:06,675 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-28 15:27:06,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:06,677 INFO L225 Difference]: With dead ends: 529 [2020-10-28 15:27:06,677 INFO L226 Difference]: Without dead ends: 506 [2020-10-28 15:27:06,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:27:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-28 15:27:06,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 479. [2020-10-28 15:27:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-10-28 15:27:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 581 transitions. [2020-10-28 15:27:06,727 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 581 transitions. Word has length 65 [2020-10-28 15:27:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:06,727 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 581 transitions. [2020-10-28 15:27:06,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:27:06,727 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 581 transitions. [2020-10-28 15:27:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 15:27:06,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:06,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:06,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 15:27:06,728 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:06,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1271406793, now seen corresponding path program 1 times [2020-10-28 15:27:06,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:06,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631192792] [2020-10-28 15:27:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 15:27:06,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:06,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 15:27:06,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:06,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:27:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 15:27:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:27:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:07,042 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:07,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:07,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:07,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:07,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:07,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:27:07,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:07,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:07,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:07,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:07,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:07,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:07,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:07,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:07,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:07,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:07,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:07,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:07,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:07,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:07,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:07,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:07,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:07,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:07,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:07,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:27:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:07,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:07,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:27:07,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:07,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 15:27:07,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:07,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:07,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:27:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 15:27:07,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:27:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:07,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:07,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:07,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:27:07,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:27:07,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:07,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:27:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:07,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631192792] [2020-10-28 15:27:07,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:07,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 15:27:07,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507719723] [2020-10-28 15:27:07,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:27:07,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:07,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:27:07,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:27:07,344 INFO L87 Difference]: Start difference. First operand 479 states and 581 transitions. Second operand 14 states. [2020-10-28 15:27:09,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:09,583 INFO L93 Difference]: Finished difference Result 524 states and 633 transitions. [2020-10-28 15:27:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:27:09,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-28 15:27:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:09,585 INFO L225 Difference]: With dead ends: 524 [2020-10-28 15:27:09,585 INFO L226 Difference]: Without dead ends: 502 [2020-10-28 15:27:09,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:27:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-28 15:27:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 475. [2020-10-28 15:27:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-28 15:27:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 575 transitions. [2020-10-28 15:27:09,652 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 575 transitions. Word has length 65 [2020-10-28 15:27:09,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:09,652 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 575 transitions. [2020-10-28 15:27:09,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:27:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 575 transitions. [2020-10-28 15:27:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 15:27:09,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:09,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:09,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 15:27:09,654 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:09,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:09,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1123961481, now seen corresponding path program 1 times [2020-10-28 15:27:09,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:09,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749219555] [2020-10-28 15:27:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:09,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:09,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:09,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 15:27:09,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:09,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 15:27:09,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:09,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:09,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:09,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 15:27:09,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 15:27:09,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:09,957 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:09,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:09,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:09,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:27:09,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:09,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:10,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:10,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:10,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:10,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:10,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:10,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:10,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:10,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:10,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:10,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:10,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:10,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 15:27:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:10,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:10,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:10,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:27:10,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:27:10,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:10,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:27:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:27:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:10,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:10,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:27:10,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:27:10,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:10,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:27:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:27:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:10,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:10,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:10,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:10,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:10,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:10,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:10,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:27:10,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:10,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:27:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:10,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:10,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:10,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:10,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:10,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:27:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:10,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749219555] [2020-10-28 15:27:10,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:10,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 15:27:10,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333094217] [2020-10-28 15:27:10,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:27:10,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:10,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:27:10,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:27:10,123 INFO L87 Difference]: Start difference. First operand 475 states and 575 transitions. Second operand 9 states. [2020-10-28 15:27:10,721 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:27:11,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:11,570 INFO L93 Difference]: Finished difference Result 901 states and 1104 transitions. [2020-10-28 15:27:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:27:11,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-28 15:27:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:11,574 INFO L225 Difference]: With dead ends: 901 [2020-10-28 15:27:11,574 INFO L226 Difference]: Without dead ends: 647 [2020-10-28 15:27:11,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:27:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-10-28 15:27:11,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 596. [2020-10-28 15:27:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-10-28 15:27:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 723 transitions. [2020-10-28 15:27:11,636 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 723 transitions. Word has length 71 [2020-10-28 15:27:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:11,636 INFO L481 AbstractCegarLoop]: Abstraction has 596 states and 723 transitions. [2020-10-28 15:27:11,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:27:11,637 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 723 transitions. [2020-10-28 15:27:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 15:27:11,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:11,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:11,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-28 15:27:11,638 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:11,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1351371834, now seen corresponding path program 1 times [2020-10-28 15:27:11,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:11,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503304633] [2020-10-28 15:27:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:11,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:11,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 15:27:11,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 15:27:11,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:11,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:27:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 15:27:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 15:27:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:11,955 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:11,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:11,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:11,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:27:11,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:11,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:12,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:12,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:12,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:12,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:12,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:12,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:12,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:12,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:12,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:12,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:12,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:12,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:12,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:12,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:12,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:12,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:12,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:12,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:12,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:27:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:12,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:12,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 15:27:12,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 15:27:12,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:12,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:27:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:12,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 15:27:12,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 15:27:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:12,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:12,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:27:12,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:27:12,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:12,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:27:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:12,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503304633] [2020-10-28 15:27:12,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:12,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 15:27:12,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752686713] [2020-10-28 15:27:12,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:27:12,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:27:12,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:27:12,224 INFO L87 Difference]: Start difference. First operand 596 states and 723 transitions. Second operand 14 states. [2020-10-28 15:27:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:14,449 INFO L93 Difference]: Finished difference Result 641 states and 776 transitions. [2020-10-28 15:27:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:27:14,450 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-10-28 15:27:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:14,452 INFO L225 Difference]: With dead ends: 641 [2020-10-28 15:27:14,452 INFO L226 Difference]: Without dead ends: 597 [2020-10-28 15:27:14,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:27:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-28 15:27:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 570. [2020-10-28 15:27:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-10-28 15:27:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 691 transitions. [2020-10-28 15:27:14,532 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 691 transitions. Word has length 69 [2020-10-28 15:27:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:14,532 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 691 transitions. [2020-10-28 15:27:14,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:27:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 691 transitions. [2020-10-28 15:27:14,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 15:27:14,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:14,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:14,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-28 15:27:14,533 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:14,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1936000690, now seen corresponding path program 1 times [2020-10-28 15:27:14,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:14,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131358139] [2020-10-28 15:27:14,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:14,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:14,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:14,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 15:27:14,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:27:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 15:27:14,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:14,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 15:27:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:27:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:14,883 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:14,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:14,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:14,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:14,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:14,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:14,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:27:14,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:14,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:14,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:14,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:14,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:14,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:14,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:14,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:14,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:14,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:14,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:14,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:14,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 15:27:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:14,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:27:14,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:27:14,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:14,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 15:27:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:15,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:27:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:15,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:15,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:27:15,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:15,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:15,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:27:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:15,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:15,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:15,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:15,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 15:27:15,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:15,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:15,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:15,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:15,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:15,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:27:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:15,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:15,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 15:27:15,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:15,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:15,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 15:27:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:15,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:15,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:15,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:15,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:27:15,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:27:15,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:27:15,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:15,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:15,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:15,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:27:15,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:27:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:15,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131358139] [2020-10-28 15:27:15,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:15,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 15:27:15,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098126126] [2020-10-28 15:27:15,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:27:15,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:15,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:27:15,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:27:15,105 INFO L87 Difference]: Start difference. First operand 570 states and 691 transitions. Second operand 11 states. [2020-10-28 15:27:15,262 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-28 15:27:15,762 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:27:17,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:17,521 INFO L93 Difference]: Finished difference Result 904 states and 1102 transitions. [2020-10-28 15:27:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 15:27:17,521 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-10-28 15:27:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:17,524 INFO L225 Difference]: With dead ends: 904 [2020-10-28 15:27:17,524 INFO L226 Difference]: Without dead ends: 586 [2020-10-28 15:27:17,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-28 15:27:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-28 15:27:17,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 552. [2020-10-28 15:27:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-10-28 15:27:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 661 transitions. [2020-10-28 15:27:17,593 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 661 transitions. Word has length 83 [2020-10-28 15:27:17,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:17,593 INFO L481 AbstractCegarLoop]: Abstraction has 552 states and 661 transitions. [2020-10-28 15:27:17,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:27:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 661 transitions. [2020-10-28 15:27:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 15:27:17,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:17,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:17,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-28 15:27:17,594 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:17,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1663735559, now seen corresponding path program 1 times [2020-10-28 15:27:17,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:17,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582817136] [2020-10-28 15:27:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:17,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:17,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:17,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 15:27:17,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:27:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-28 15:27:17,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:17,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:27:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 15:27:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:27:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,134 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:18,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:18,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:18,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:27:18,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:18,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:18,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:18,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:18,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:18,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:18,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:18,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:18,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:18,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:18,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:18,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:18,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:18,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:18,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 15:27:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:18,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:27:18,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:27:18,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 15:27:18,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:18,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 15:27:18,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:27:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:18,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:18,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:27:18,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:18,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:18,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:18,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:18,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:27:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:18,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:18,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:18,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 15:27:18,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:18,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:18,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:27:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 15:27:18,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:18,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 15:27:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:27:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:18,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:18,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 15:27:18,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:18,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:18,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:18,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:18,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:18,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582817136] [2020-10-28 15:27:18,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:18,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 15:27:18,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319225937] [2020-10-28 15:27:18,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:27:18,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:18,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:27:18,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:27:18,440 INFO L87 Difference]: Start difference. First operand 552 states and 661 transitions. Second operand 14 states. [2020-10-28 15:27:19,670 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 15:27:20,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:20,384 INFO L93 Difference]: Finished difference Result 916 states and 1136 transitions. [2020-10-28 15:27:20,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 15:27:20,385 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-28 15:27:20,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:20,387 INFO L225 Difference]: With dead ends: 916 [2020-10-28 15:27:20,388 INFO L226 Difference]: Without dead ends: 661 [2020-10-28 15:27:20,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-28 15:27:20,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-28 15:27:20,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 516. [2020-10-28 15:27:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-28 15:27:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 615 transitions. [2020-10-28 15:27:20,487 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 615 transitions. Word has length 84 [2020-10-28 15:27:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:20,488 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 615 transitions. [2020-10-28 15:27:20,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:27:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 615 transitions. [2020-10-28 15:27:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 15:27:20,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:20,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:20,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-28 15:27:20,490 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:20,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:20,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1374742277, now seen corresponding path program 1 times [2020-10-28 15:27:20,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:20,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987661465] [2020-10-28 15:27:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:20,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:20,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 15:27:21,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:27:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-28 15:27:21,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:27:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 15:27:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:27:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,468 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:21,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:21,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:21,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:21,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:27:21,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:21,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:21,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:27:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 15:27:21,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:27:21,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 15:27:21,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:27:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 15:27:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:27:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:27:21,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:21,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 15:27:21,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:27:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:27:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:27:21,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:21,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:21,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:27:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:21,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:21,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:21,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:27:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:21,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:21,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 15:27:21,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 15:27:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:21,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:21,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:27:21,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:21,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:21,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:27:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:21,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987661465] [2020-10-28 15:27:21,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:21,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-28 15:27:21,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652059362] [2020-10-28 15:27:21,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 15:27:21,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:21,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 15:27:21,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:27:21,948 INFO L87 Difference]: Start difference. First operand 516 states and 615 transitions. Second operand 16 states. [2020-10-28 15:27:23,241 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-28 15:27:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:24,368 INFO L93 Difference]: Finished difference Result 595 states and 708 transitions. [2020-10-28 15:27:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 15:27:24,369 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 89 [2020-10-28 15:27:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:24,371 INFO L225 Difference]: With dead ends: 595 [2020-10-28 15:27:24,372 INFO L226 Difference]: Without dead ends: 573 [2020-10-28 15:27:24,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-28 15:27:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-10-28 15:27:24,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 524. [2020-10-28 15:27:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-28 15:27:24,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 625 transitions. [2020-10-28 15:27:24,462 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 625 transitions. Word has length 89 [2020-10-28 15:27:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:24,462 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 625 transitions. [2020-10-28 15:27:24,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 15:27:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 625 transitions. [2020-10-28 15:27:24,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 15:27:24,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:24,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:24,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-28 15:27:24,464 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:24,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:24,465 INFO L82 PathProgramCache]: Analyzing trace with hash 225321612, now seen corresponding path program 1 times [2020-10-28 15:27:24,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:24,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419454830] [2020-10-28 15:27:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 15:27:25,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:27:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-28 15:27:25,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:27:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-28 15:27:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:27:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,560 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:25,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:25,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:25,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:27:25,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:25,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:25,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:25,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:25,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:25,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:25,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:27:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 15:27:25,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:25,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 15:27:25,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:27:25,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:25,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 15:27:25,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:27:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:27:25,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:25,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 15:27:25,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:27:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:25,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 15:27:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:27:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:27:25,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:27:25,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:27:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:25,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:25,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:25,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:27:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:25,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:25,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:25,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:25,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 15:27:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:25,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:25,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:27:25,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:25,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:25,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:25,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:25,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:25,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:25,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:27:25,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:25,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419454830] [2020-10-28 15:27:25,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:25,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-28 15:27:25,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28839785] [2020-10-28 15:27:25,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 15:27:25,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:25,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 15:27:25,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:27:25,982 INFO L87 Difference]: Start difference. First operand 524 states and 625 transitions. Second operand 16 states. [2020-10-28 15:27:27,414 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 15:27:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:28,201 INFO L93 Difference]: Finished difference Result 595 states and 707 transitions. [2020-10-28 15:27:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 15:27:28,202 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-10-28 15:27:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:28,205 INFO L225 Difference]: With dead ends: 595 [2020-10-28 15:27:28,205 INFO L226 Difference]: Without dead ends: 573 [2020-10-28 15:27:28,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-28 15:27:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-10-28 15:27:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 516. [2020-10-28 15:27:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-28 15:27:28,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 614 transitions. [2020-10-28 15:27:28,262 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 614 transitions. Word has length 90 [2020-10-28 15:27:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:28,262 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 614 transitions. [2020-10-28 15:27:28,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 15:27:28,263 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 614 transitions. [2020-10-28 15:27:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 15:27:28,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:28,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:28,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-28 15:27:28,264 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:28,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1692646337, now seen corresponding path program 1 times [2020-10-28 15:27:28,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:28,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997987292] [2020-10-28 15:27:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:28,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:28,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:28,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 15:27:28,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 15:27:28,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:28,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:27:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 15:27:28,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 15:27:28,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:28,608 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-28 15:27:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:27:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:28,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:28,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:28,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:27:28,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:28,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:28,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:27:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:28,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:28,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:28,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:28,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:28,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:27:28,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:28,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:27:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:27:28,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:28,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:27:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:28,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:28,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:27:28,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:28,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:27:28,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:28,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:28,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:27:28,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:28,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:27:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:28,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:28,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 15:27:28,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 15:27:28,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:28,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:27:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:27:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 15:27:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:28,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 15:27:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:28,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:28,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:28,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 15:27:28,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:27:28,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:28,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:27:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:28,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:27:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:28,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:28,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:28,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 15:27:28,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:28,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:27:28,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:28,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:28,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:27:28,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:27:28,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:27:28,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:28,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 15:27:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:27:28,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:27:28,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:27:28,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:27:28,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:27:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:27:28,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:27:28,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:27:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:27:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:27:28,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:27:28,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:27:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:27:29,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997987292] [2020-10-28 15:27:29,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:27:29,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 15:27:29,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127917298] [2020-10-28 15:27:29,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:27:29,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:27:29,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:27:29,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:27:29,012 INFO L87 Difference]: Start difference. First operand 516 states and 614 transitions. Second operand 14 states. [2020-10-28 15:27:29,188 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:27:31,424 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-28 15:27:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:27:32,522 INFO L93 Difference]: Finished difference Result 1091 states and 1281 transitions. [2020-10-28 15:27:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 15:27:32,523 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-28 15:27:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:27:32,526 INFO L225 Difference]: With dead ends: 1091 [2020-10-28 15:27:32,526 INFO L226 Difference]: Without dead ends: 748 [2020-10-28 15:27:32,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-28 15:27:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-28 15:27:32,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 641. [2020-10-28 15:27:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-28 15:27:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 751 transitions. [2020-10-28 15:27:32,640 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 751 transitions. Word has length 85 [2020-10-28 15:27:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:27:32,640 INFO L481 AbstractCegarLoop]: Abstraction has 641 states and 751 transitions. [2020-10-28 15:27:32,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:27:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 751 transitions. [2020-10-28 15:27:32,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 15:27:32,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:27:32,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:27:32,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-28 15:27:32,641 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:27:32,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:27:32,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2003773310, now seen corresponding path program 1 times [2020-10-28 15:27:32,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:27:32,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936525347] [2020-10-28 15:27:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:27:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 15:27:32,662 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 15:27:32,662 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 15:27:32,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-28 15:27:32,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:27:32 BoogieIcfgContainer [2020-10-28 15:27:32,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:27:32,706 INFO L168 Benchmark]: Toolchain (without parser) took 199560.16 ms. Allocated memory was 155.2 MB in the beginning and 690.0 MB in the end (delta: 534.8 MB). Free memory was 129.1 MB in the beginning and 594.0 MB in the end (delta: -464.9 MB). Peak memory consumption was 70.6 MB. Max. memory is 8.0 GB. [2020-10-28 15:27:32,706 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 155.2 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:27:32,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.75 ms. Allocated memory is still 155.2 MB. Free memory was 128.4 MB in the beginning and 133.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 8.0 GB. [2020-10-28 15:27:32,707 INFO L168 Benchmark]: Boogie Preprocessor took 132.43 ms. Allocated memory is still 155.2 MB. Free memory was 133.3 MB in the beginning and 128.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 15:27:32,707 INFO L168 Benchmark]: RCFGBuilder took 1650.61 ms. Allocated memory is still 155.2 MB. Free memory was 128.6 MB in the beginning and 97.3 MB in the end (delta: 31.3 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. [2020-10-28 15:27:32,708 INFO L168 Benchmark]: TraceAbstraction took 196991.59 ms. Allocated memory was 155.2 MB in the beginning and 690.0 MB in the end (delta: 534.8 MB). Free memory was 96.8 MB in the beginning and 594.6 MB in the end (delta: -497.8 MB). Peak memory consumption was 37.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:27:32,709 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 155.2 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 773.75 ms. Allocated memory is still 155.2 MB. Free memory was 128.4 MB in the beginning and 133.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 132.43 ms. Allocated memory is still 155.2 MB. Free memory was 133.3 MB in the beginning and 128.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1650.61 ms. Allocated memory is still 155.2 MB. Free memory was 128.6 MB in the beginning and 97.3 MB in the end (delta: 31.3 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 196991.59 ms. Allocated memory was 155.2 MB in the beginning and 690.0 MB in the end (delta: 534.8 MB). Free memory was 96.8 MB in the beginning and 594.6 MB in the end (delta: -497.8 MB). Peak memory consumption was 37.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int FloppyThread ; [L43] int KernelMode ; [L44] int Suspended ; [L45] int Executive ; [L46] int DiskController ; [L47] int FloppyDiskPeripheral ; [L48] int FlConfigCallBack ; [L49] int MaximumInterfaceType ; [L50] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L51] int myStatus ; [L52] int s ; [L53] int UNLOADED ; [L54] int NP ; [L55] int DC ; [L56] int SKIP1 ; [L57] int SKIP2 ; [L58] int MPR1 ; [L59] int MPR3 ; [L60] int IPC ; [L61] int pended ; [L62] int compRegistered ; [L63] int lowerDriverReturn ; [L64] int setEventCalled ; [L65] int customIrp ; [L88] int PagingReferenceCount = 0; [L89] int PagingMutex = 0; [L668] int status ; [L669] int irp = __VERIFIER_nondet_int() ; [L670] int pirp ; [L671] int pirp__IoStatus__Status ; [L672] int irp_choice = __VERIFIER_nondet_int() ; [L673] int devobj = __VERIFIER_nondet_int() ; [L674] int __cil_tmp8 ; [L676] FloppyThread = 0 [L677] KernelMode = 0 [L678] Suspended = 0 [L679] Executive = 0 [L680] DiskController = 0 [L681] FloppyDiskPeripheral = 0 [L682] FlConfigCallBack = 0 [L683] MaximumInterfaceType = 0 [L684] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L685] myStatus = 0 [L686] s = 0 [L687] UNLOADED = 0 [L688] NP = 0 [L689] DC = 0 [L690] SKIP1 = 0 [L691] SKIP2 = 0 [L692] MPR1 = 0 [L693] MPR3 = 0 [L694] IPC = 0 [L695] pended = 0 [L696] compRegistered = 0 [L697] lowerDriverReturn = 0 [L698] setEventCalled = 0 [L699] customIrp = 0 [L703] status = 0 [L704] pirp = irp [L705] CALL _BLAST_init() [L71] UNLOADED = 0 [L72] NP = 1 [L73] DC = 2 [L74] SKIP1 = 3 [L75] SKIP2 = 4 [L76] MPR1 = 5 [L77] MPR3 = 6 [L78] IPC = 7 [L79] s = UNLOADED [L80] pended = 0 [L81] compRegistered = 0 [L82] lowerDriverReturn = 0 [L83] setEventCalled = 0 [L84] customIrp = 0 [L705] RET _BLAST_init() [L707] COND TRUE status >= 0 [L708] s = NP [L709] customIrp = 0 [L710] setEventCalled = customIrp [L711] lowerDriverReturn = setEventCalled [L712] compRegistered = lowerDriverReturn [L713] pended = compRegistered [L714] pirp__IoStatus__Status = 0 [L715] myStatus = 0 [L716] COND TRUE irp_choice == 0 [L717] pirp__IoStatus__Status = -1073741637 [L718] myStatus = -1073741637 [L721] CALL stub_driver_init() [L658] s = NP [L659] pended = 0 [L660] compRegistered = 0 [L661] lowerDriverReturn = 0 [L662] setEventCalled = 0 [L663] customIrp = 0 [L721] RET stub_driver_init() [L724] COND FALSE !(status < 0) [L728] int tmp_ndt_1; [L729] tmp_ndt_1 = __VERIFIER_nondet_int() [L730] COND FALSE !(tmp_ndt_1 == 0) [L733] int tmp_ndt_2; [L734] tmp_ndt_2 = __VERIFIER_nondet_int() [L735] COND FALSE !(tmp_ndt_2 == 1) [L738] int tmp_ndt_3; [L739] tmp_ndt_3 = __VERIFIER_nondet_int() [L740] COND FALSE !(tmp_ndt_3 == 2) [L743] int tmp_ndt_4; [L744] tmp_ndt_4 = __VERIFIER_nondet_int() [L745] COND TRUE tmp_ndt_4 == 3 [L767] CALL, EXPR FloppyPnp(devobj, pirp) [L161] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L162] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L163] int Irp__IoStatus__Information ; [L164] int Irp__IoStatus__Status ; [L165] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L166] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L167] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L168] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L169] int disketteExtension__HoldNewRequests ; [L170] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L171] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L172] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L173] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L174] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L175] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L176] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L177] int irpSp ; [L178] int disketteExtension ; [L179] int ntStatus ; [L180] int doneEvent = __VERIFIER_nondet_int() ; [L181] int irpSp___0 ; [L182] int nextIrpSp ; [L183] int nextIrpSp__Control ; [L184] int irpSp___1 ; [L185] int irpSp__Context ; [L186] int irpSp__Control ; [L187] long __cil_tmp29 ; [L188] long __cil_tmp30 ; [L191] ntStatus = 0 [L192] PagingReferenceCount ++ [L193] COND TRUE PagingReferenceCount == 1 [L196] disketteExtension = DeviceObject__DeviceExtension [L197] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L198] COND FALSE !(\read(disketteExtension__IsRemoved)) [L207] COND FALSE !(irpSp__MinorFunction == 0) [L210] COND TRUE irpSp__MinorFunction == 5 [L236] COND TRUE irpSp__MinorFunction == 5 [L239] COND FALSE !(! disketteExtension__IsStarted) [L255] disketteExtension__HoldNewRequests = 1 [L256] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L98] int status ; [L99] int threadHandle = __VERIFIER_nondet_int() ; [L100] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L101] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L102] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L103] int Irp__IoStatus__Status ; [L104] int Irp__IoStatus__Information ; [L105] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L106] int ObjAttributes = __VERIFIER_nondet_int() ; [L107] int __cil_tmp12 ; [L108] int __cil_tmp13 ; [L111] COND FALSE !(DisketteExtension__PoweringDown == 1) [L117] DisketteExtension__ThreadReferenceCount ++ [L118] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L150] COND TRUE pended == 0 [L151] pended = 1 [L157] return (259); [L256] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L256] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L259] __cil_tmp29 = (long )ntStatus [L260] COND TRUE __cil_tmp29 == 259L [L262-L263] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1066] COND FALSE !(s == MPR3) [L1075] COND FALSE !(customIrp == 1) [L1079] COND FALSE !(s == MPR3) [L1086] int tmp_ndt_12; [L1087] tmp_ndt_12 = __VERIFIER_nondet_int() [L1088] COND TRUE tmp_ndt_12 == 0 [L1094] return (0); [L262-L263] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L265] COND TRUE disketteExtension__FloppyThread != 0 [L268] disketteExtension__FloppyThread = 0 [L269] Irp__IoStatus__Status = 0 [L270] myStatus = 0 [L271] COND TRUE s == NP [L272] s = SKIP1 [L279] Irp__CurrentLocation ++ [L280] Irp__Tail__Overlay__CurrentStackLocation ++ [L281] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L968] int returnVal2 ; [L969] int compRetStatus1 ; [L970] int lcontext = __VERIFIER_nondet_int() ; [L971] unsigned long __cil_tmp7 ; [L974] COND FALSE !(\read(compRegistered)) [L987] int tmp_ndt_10; [L988] tmp_ndt_10 = __VERIFIER_nondet_int() [L989] COND TRUE tmp_ndt_10 == 0 [L1000] returnVal2 = 0 [L1013] COND FALSE !(s == NP) [L1017] COND FALSE !(s == MPR1) [L1026] COND TRUE s == SKIP1 [L1027] s = SKIP2 [L1028] lowerDriverReturn = returnVal2 [L1036] return (returnVal2); [L281] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L281] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L427] PagingReferenceCount -- [L428] COND TRUE PagingReferenceCount == 0 [L431] return (ntStatus); [L767] RET, EXPR FloppyPnp(devobj, pirp) [L767] status = FloppyPnp(devobj, pirp) [L780] COND TRUE pended == 1 [L781] COND FALSE !(s == NP) [L788] COND TRUE pended == 1 [L789] COND FALSE !(s == MPR3) [L796] COND TRUE s != UNLOADED [L797] COND TRUE status != -1 [L798] COND FALSE !(s != SKIP2) [L812] COND TRUE pended == 1 [L813] COND TRUE status != 259 [L814] CALL errorFn() [L1627] CALL reach_error() [L3] __assert_fail("0", "floppy_simpl4.cil-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 31 procedures, 397 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 196.8s, OverallIterations: 51, TraceHistogramMax: 1, AutomataDifference: 138.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21422 SDtfs, 29279 SDslu, 39321 SDs, 0 SdLazy, 74666 SolverSat, 8895 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1111 GetRequests, 444 SyntacticMatches, 2 SemanticMatches, 665 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 27.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1375occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.2s AutomataMinimizationTime, 50 MinimizatonAttempts, 2972 StatesRemovedByMinimization, 50 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 51.3s InterpolantComputationTime, 2864 NumberOfCodeBlocks, 2864 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2728 ConstructedInterpolants, 0 QuantifiedInterpolants, 835507 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 50 InterpolantComputations, 50 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...