/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 10:06:32,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 10:06:32,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 10:06:32,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 10:06:32,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 10:06:32,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 10:06:32,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 10:06:32,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 10:06:32,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 10:06:32,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 10:06:32,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 10:06:32,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 10:06:32,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 10:06:32,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 10:06:32,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 10:06:32,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 10:06:32,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 10:06:32,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 10:06:32,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 10:06:32,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 10:06:32,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 10:06:32,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 10:06:32,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 10:06:32,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 10:06:32,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 10:06:32,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 10:06:32,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 10:06:32,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 10:06:32,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 10:06:32,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 10:06:32,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 10:06:32,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 10:06:32,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 10:06:32,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 10:06:32,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 10:06:32,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 10:06:32,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 10:06:32,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 10:06:32,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 10:06:32,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 10:06:32,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 10:06:32,793 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 [2020-10-29 10:06:32,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 10:06:32,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 10:06:32,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 10:06:32,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 10:06:32,824 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 10:06:32,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 10:06:32,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 10:06:32,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 10:06:32,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 10:06:32,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 10:06:32,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 10:06:32,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 10:06:32,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 10:06:32,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 10:06:32,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 10:06:32,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 10:06:32,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 10:06:32,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 10:06:32,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 10:06:32,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 10:06:32,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 10:06:32,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 10:06:32,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 10:06:32,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 10:06:32,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 10:06:32,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 10:06:32,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 10:06:32,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 10:06:32,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 10:06:32,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 10:06:33,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 10:06:33,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 10:06:33,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 10:06:33,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 10:06:33,284 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 10:06:33,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2020-10-29 10:06:33,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/084116e5a/640f109943134fb39a9182d5eabea2bb/FLAG017bca3c0 [2020-10-29 10:06:34,080 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 10:06:34,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2020-10-29 10:06:34,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/084116e5a/640f109943134fb39a9182d5eabea2bb/FLAG017bca3c0 [2020-10-29 10:06:34,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/084116e5a/640f109943134fb39a9182d5eabea2bb [2020-10-29 10:06:34,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 10:06:34,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 10:06:34,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 10:06:34,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 10:06:34,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 10:06:34,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:06:34" (1/1) ... [2020-10-29 10:06:34,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23607a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:34, skipping insertion in model container [2020-10-29 10:06:34,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:06:34" (1/1) ... [2020-10-29 10:06:34,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 10:06:34,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 10:06:34,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:06:34,863 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 10:06:35,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:06:35,067 INFO L208 MainTranslator]: Completed translation [2020-10-29 10:06:35,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35 WrapperNode [2020-10-29 10:06:35,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 10:06:35,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 10:06:35,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 10:06:35,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 10:06:35,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35" (1/1) ... [2020-10-29 10:06:35,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35" (1/1) ... [2020-10-29 10:06:35,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35" (1/1) ... [2020-10-29 10:06:35,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35" (1/1) ... [2020-10-29 10:06:35,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35" (1/1) ... [2020-10-29 10:06:35,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35" (1/1) ... [2020-10-29 10:06:35,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35" (1/1) ... [2020-10-29 10:06:35,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 10:06:35,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 10:06:35,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 10:06:35,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 10:06:35,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35" (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 [2020-10-29 10:06:35,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 10:06:35,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 10:06:35,361 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 10:06:35,361 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-29 10:06:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-29 10:06:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-29 10:06:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-29 10:06:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-29 10:06:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-29 10:06:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-29 10:06:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-29 10:06:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-29 10:06:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 10:06:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-29 10:06:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-29 10:06:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-29 10:06:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-29 10:06:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-29 10:06:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-29 10:06:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-29 10:06:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-29 10:06:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-29 10:06:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-29 10:06:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-29 10:06:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-29 10:06:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-29 10:06:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2020-10-29 10:06:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2020-10-29 10:06:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2020-10-29 10:06:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2020-10-29 10:06:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-29 10:06:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 10:06:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 10:06:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 10:06:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 10:06:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 10:06:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 10:06:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-29 10:06:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-29 10:06:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-29 10:06:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-29 10:06:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-29 10:06:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-29 10:06:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-29 10:06:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-29 10:06:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-29 10:06:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-29 10:06:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-29 10:06:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-29 10:06:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-29 10:06:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-29 10:06:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-29 10:06:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-29 10:06:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-29 10:06:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-29 10:06:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2020-10-29 10:06:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2020-10-29 10:06:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2020-10-29 10:06:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2020-10-29 10:06:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-29 10:06:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-29 10:06:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-29 10:06:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-29 10:06:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-29 10:06:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 10:06:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-29 10:06:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 10:06:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 10:06:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 10:06:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 10:06:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 10:06:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 10:06:35,960 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,005 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-29 10:06:36,006 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-29 10:06:36,016 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,027 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-29 10:06:36,028 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-29 10:06:36,034 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,433 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-29 10:06:36,434 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-29 10:06:36,437 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,522 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2020-10-29 10:06:36,523 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2020-10-29 10:06:36,538 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,558 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-29 10:06:36,559 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-29 10:06:36,684 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,703 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-29 10:06:36,703 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-29 10:06:36,704 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,721 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-29 10:06:36,721 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-29 10:06:36,723 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,740 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-29 10:06:36,740 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-29 10:06:36,787 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,819 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-29 10:06:36,819 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-29 10:06:36,864 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:36,990 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2020-10-29 10:06:36,990 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2020-10-29 10:06:37,054 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:37,060 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-29 10:06:37,060 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-29 10:06:37,061 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:37,070 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-29 10:06:37,070 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-29 10:06:37,070 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-29 10:06:37,077 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-29 10:06:37,078 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-29 10:06:37,108 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 10:06:37,108 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 10:06:37,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:06:37 BoogieIcfgContainer [2020-10-29 10:06:37,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 10:06:37,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 10:06:37,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 10:06:37,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 10:06:37,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 10:06:34" (1/3) ... [2020-10-29 10:06:37,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ee995a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:06:37, skipping insertion in model container [2020-10-29 10:06:37,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:06:35" (2/3) ... [2020-10-29 10:06:37,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ee995a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:06:37, skipping insertion in model container [2020-10-29 10:06:37,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:06:37" (3/3) ... [2020-10-29 10:06:37,124 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2020-10-29 10:06:37,137 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 10:06:37,143 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 10:06:37,157 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 10:06:37,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 10:06:37,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 10:06:37,190 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 10:06:37,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 10:06:37,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 10:06:37,190 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 10:06:37,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 10:06:37,191 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 10:06:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states. [2020-10-29 10:06:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 10:06:37,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:37,229 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] [2020-10-29 10:06:37,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:37,237 INFO L82 PathProgramCache]: Analyzing trace with hash -330863977, now seen corresponding path program 1 times [2020-10-29 10:06:37,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:37,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565481830] [2020-10-29 10:06:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:38,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 10:06:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:06:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-29 10:06:38,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:38,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:38,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:38,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:06:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:06:38,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 10:06:38,374 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:06:38,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:38,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:38,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:38,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:38,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 10:06:38,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:38,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:38,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:38,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:38,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:38,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:38,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:06:38,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:38,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:06:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:38,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565481830] [2020-10-29 10:06:38,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:38,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 10:06:38,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727098511] [2020-10-29 10:06:38,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 10:06:38,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:38,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 10:06:38,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 10:06:38,503 INFO L87 Difference]: Start difference. First operand 393 states. Second operand 5 states. [2020-10-29 10:06:38,677 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 10:06:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:41,187 INFO L93 Difference]: Finished difference Result 680 states and 997 transitions. [2020-10-29 10:06:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:06:41,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-29 10:06:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:41,215 INFO L225 Difference]: With dead ends: 680 [2020-10-29 10:06:41,215 INFO L226 Difference]: Without dead ends: 423 [2020-10-29 10:06:41,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:06:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-29 10:06:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 381. [2020-10-29 10:06:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-29 10:06:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 524 transitions. [2020-10-29 10:06:41,347 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 524 transitions. Word has length 21 [2020-10-29 10:06:41,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:41,348 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 524 transitions. [2020-10-29 10:06:41,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 10:06:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 524 transitions. [2020-10-29 10:06:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 10:06:41,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:41,350 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] [2020-10-29 10:06:41,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 10:06:41,351 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:41,352 INFO L82 PathProgramCache]: Analyzing trace with hash -547654411, now seen corresponding path program 1 times [2020-10-29 10:06:41,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:41,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016176015] [2020-10-29 10:06:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:41,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:41,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 10:06:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-29 10:06:41,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:41,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:41,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:06:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 10:06:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:06:41,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:41,791 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:06:41,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:41,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:41,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:41,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:41,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:41,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:41,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:06:41,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:41,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:41,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:41,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:41,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:06:41,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:41,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:06:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:41,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016176015] [2020-10-29 10:06:41,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:41,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 10:06:41,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465505033] [2020-10-29 10:06:41,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:06:41,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:41,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:06:41,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:06:41,906 INFO L87 Difference]: Start difference. First operand 381 states and 524 transitions. Second operand 6 states. [2020-10-29 10:06:42,054 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 10:06:45,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:45,295 INFO L93 Difference]: Finished difference Result 750 states and 1025 transitions. [2020-10-29 10:06:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:06:45,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-29 10:06:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:45,305 INFO L225 Difference]: With dead ends: 750 [2020-10-29 10:06:45,305 INFO L226 Difference]: Without dead ends: 586 [2020-10-29 10:06:45,307 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 [2020-10-29 10:06:45,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-29 10:06:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 526. [2020-10-29 10:06:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-29 10:06:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 717 transitions. [2020-10-29 10:06:45,439 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 717 transitions. Word has length 26 [2020-10-29 10:06:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:45,441 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 717 transitions. [2020-10-29 10:06:45,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:06:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 717 transitions. [2020-10-29 10:06:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 10:06:45,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:45,444 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] [2020-10-29 10:06:45,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 10:06:45,444 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash -824430487, now seen corresponding path program 1 times [2020-10-29 10:06:45,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:45,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619419729] [2020-10-29 10:06:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:46,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:46,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 10:06:46,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:46,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-29 10:06:46,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:46,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:06:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 10:06:46,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 10:06:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:46,251 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:06:46,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:06:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:46,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:46,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:46,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:46,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:46,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:06:46,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:46,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:46,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:46,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:46,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:46,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:46,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:06:46,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:46,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:06:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:46,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619419729] [2020-10-29 10:06:46,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:46,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 10:06:46,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768969325] [2020-10-29 10:06:46,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:06:46,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:46,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:06:46,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:06:46,372 INFO L87 Difference]: Start difference. First operand 526 states and 717 transitions. Second operand 6 states. [2020-10-29 10:06:46,526 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:06:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:48,938 INFO L93 Difference]: Finished difference Result 698 states and 937 transitions. [2020-10-29 10:06:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:06:48,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-29 10:06:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:48,946 INFO L225 Difference]: With dead ends: 698 [2020-10-29 10:06:48,946 INFO L226 Difference]: Without dead ends: 678 [2020-10-29 10:06:48,947 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 [2020-10-29 10:06:48,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-10-29 10:06:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 584. [2020-10-29 10:06:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-10-29 10:06:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 791 transitions. [2020-10-29 10:06:49,036 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 791 transitions. Word has length 32 [2020-10-29 10:06:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:49,037 INFO L481 AbstractCegarLoop]: Abstraction has 584 states and 791 transitions. [2020-10-29 10:06:49,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:06:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 791 transitions. [2020-10-29 10:06:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 10:06:49,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:49,040 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] [2020-10-29 10:06:49,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 10:06:49,040 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:49,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:49,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1878647767, now seen corresponding path program 1 times [2020-10-29 10:06:49,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:49,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878236490] [2020-10-29 10:06:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:49,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:49,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:49,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 10:06:49,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 10:06:49,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:49,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:06:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 10:06:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 10:06:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:49,636 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:06:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:49,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:49,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:49,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:06:49,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:49,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:49,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:49,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:49,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:49,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:06:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:49,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:49,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:49,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:49,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:49,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:06:49,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:49,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:06:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:49,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878236490] [2020-10-29 10:06:49,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:49,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 10:06:49,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497125704] [2020-10-29 10:06:49,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:06:49,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:49,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:06:49,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:06:49,751 INFO L87 Difference]: Start difference. First operand 584 states and 791 transitions. Second operand 6 states. [2020-10-29 10:06:49,924 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 10:06:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:52,662 INFO L93 Difference]: Finished difference Result 1120 states and 1504 transitions. [2020-10-29 10:06:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:06:52,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-29 10:06:52,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:52,669 INFO L225 Difference]: With dead ends: 1120 [2020-10-29 10:06:52,670 INFO L226 Difference]: Without dead ends: 821 [2020-10-29 10:06:52,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:06:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-10-29 10:06:52,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 772. [2020-10-29 10:06:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-10-29 10:06:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1048 transitions. [2020-10-29 10:06:52,783 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1048 transitions. Word has length 34 [2020-10-29 10:06:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:52,784 INFO L481 AbstractCegarLoop]: Abstraction has 772 states and 1048 transitions. [2020-10-29 10:06:52,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:06:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1048 transitions. [2020-10-29 10:06:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 10:06:52,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:52,787 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] [2020-10-29 10:06:52,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 10:06:52,787 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:52,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:52,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1496482537, now seen corresponding path program 1 times [2020-10-29 10:06:52,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:52,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766150868] [2020-10-29 10:06:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:52,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:52,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 10:06:52,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 10:06:52,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:52,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:52,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 10:06:52,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:06:52,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:53,031 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:06:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:53,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 10:06:53,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:53,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:06:53,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:53,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:06:53,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:53,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:06:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:06:53,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:06:53,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:06:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:53,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:06:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:53,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:53,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:06:53,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:53,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:06:53,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:53,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:53,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 10:06:53,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:53,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766150868] [2020-10-29 10:06:53,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:53,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 10:06:53,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739454685] [2020-10-29 10:06:53,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:06:53,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:53,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:06:53,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:06:53,231 INFO L87 Difference]: Start difference. First operand 772 states and 1048 transitions. Second operand 8 states. [2020-10-29 10:06:53,381 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 10:06:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:56,291 INFO L93 Difference]: Finished difference Result 868 states and 1166 transitions. [2020-10-29 10:06:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:06:56,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-29 10:06:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:56,299 INFO L225 Difference]: With dead ends: 868 [2020-10-29 10:06:56,299 INFO L226 Difference]: Without dead ends: 862 [2020-10-29 10:06:56,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:06:56,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2020-10-29 10:06:56,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 809. [2020-10-29 10:06:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2020-10-29 10:06:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1091 transitions. [2020-10-29 10:06:56,403 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1091 transitions. Word has length 39 [2020-10-29 10:06:56,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:56,406 INFO L481 AbstractCegarLoop]: Abstraction has 809 states and 1091 transitions. [2020-10-29 10:06:56,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:06:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1091 transitions. [2020-10-29 10:06:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 10:06:56,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:56,411 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] [2020-10-29 10:06:56,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 10:06:56,411 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:56,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1431656871, now seen corresponding path program 1 times [2020-10-29 10:06:56,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:56,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22022606] [2020-10-29 10:06:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:56,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:56,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 10:06:56,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 10:06:56,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:56,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:06:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 10:06:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 10:06:56,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:56,868 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:06:56,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:56,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:56,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:56,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:56,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:06:56,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:56,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:56,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:56,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:56,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:56,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:06:56,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:56,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:56,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:56,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:56,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:56,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:56,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:06:56,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:56,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:56,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:56,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22022606] [2020-10-29 10:06:56,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:56,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 10:06:56,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684240290] [2020-10-29 10:06:56,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:06:56,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:56,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:06:56,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:06:56,993 INFO L87 Difference]: Start difference. First operand 809 states and 1091 transitions. Second operand 6 states. [2020-10-29 10:06:57,141 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 10:06:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:06:58,745 INFO L93 Difference]: Finished difference Result 844 states and 1134 transitions. [2020-10-29 10:06:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:06:58,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-29 10:06:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:06:58,753 INFO L225 Difference]: With dead ends: 844 [2020-10-29 10:06:58,753 INFO L226 Difference]: Without dead ends: 840 [2020-10-29 10:06:58,754 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 [2020-10-29 10:06:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-10-29 10:06:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 820. [2020-10-29 10:06:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-29 10:06:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1105 transitions. [2020-10-29 10:06:58,856 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1105 transitions. Word has length 39 [2020-10-29 10:06:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:06:58,856 INFO L481 AbstractCegarLoop]: Abstraction has 820 states and 1105 transitions. [2020-10-29 10:06:58,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:06:58,857 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1105 transitions. [2020-10-29 10:06:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 10:06:58,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:06:58,858 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] [2020-10-29 10:06:58,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 10:06:58,859 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:06:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:06:58,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2065731681, now seen corresponding path program 1 times [2020-10-29 10:06:58,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:06:58,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541654266] [2020-10-29 10:06:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:06:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:59,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:59,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:59,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 10:06:59,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:06:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-29 10:06:59,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:59,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:06:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:06:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:06:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:59,620 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:06:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:06:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:59,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:06:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:06:59,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:59,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:06:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:59,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:59,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:59,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:59,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:06:59,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:59,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:06:59,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:06:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:59,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:59,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:59,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:06:59,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:06:59,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:59,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:59,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:06:59,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:06:59,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 10:06:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:59,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:59,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:06:59,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 10:06:59,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:59,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:06:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:59,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 10:06:59,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:06:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:06:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:06:59,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:06:59,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:06:59,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:06:59,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:06:59,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:06:59,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:06:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:06:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:06:59,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 10:06:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:06:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:06:59,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541654266] [2020-10-29 10:06:59,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:06:59,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:06:59,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850920200] [2020-10-29 10:06:59,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:06:59,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:06:59,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:06:59,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:06:59,962 INFO L87 Difference]: Start difference. First operand 820 states and 1105 transitions. Second operand 12 states. [2020-10-29 10:07:00,127 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:07:00,304 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:07:01,857 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2020-10-29 10:07:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:03,440 INFO L93 Difference]: Finished difference Result 880 states and 1179 transitions. [2020-10-29 10:07:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:07:03,442 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-29 10:07:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:03,449 INFO L225 Difference]: With dead ends: 880 [2020-10-29 10:07:03,450 INFO L226 Difference]: Without dead ends: 873 [2020-10-29 10:07:03,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2020-10-29 10:07:03,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-10-29 10:07:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 820. [2020-10-29 10:07:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-29 10:07:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1104 transitions. [2020-10-29 10:07:03,549 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1104 transitions. Word has length 41 [2020-10-29 10:07:03,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:03,549 INFO L481 AbstractCegarLoop]: Abstraction has 820 states and 1104 transitions. [2020-10-29 10:07:03,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:07:03,549 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1104 transitions. [2020-10-29 10:07:03,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 10:07:03,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:03,551 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] [2020-10-29 10:07:03,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 10:07:03,551 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:03,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1296729044, now seen corresponding path program 1 times [2020-10-29 10:07:03,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:03,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075120158] [2020-10-29 10:07:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:04,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:04,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 10:07:04,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:07:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-29 10:07:04,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:04,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:07:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 10:07:04,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:04,230 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:04,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:04,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:04,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:04,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:04,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:07:04,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:04,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:04,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:04,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:04,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:04,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:04,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:04,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 10:07:04,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:04,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:07:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:04,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:04,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:04,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:04,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:04,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:07:04,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:04,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:07:04,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:04,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 10:07:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:04,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:04,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:07:04,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:07:04,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:04,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 10:07:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:04,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:07:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:04,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:04,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:04,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:04,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:04,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:04,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:04,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:04,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075120158] [2020-10-29 10:07:04,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:04,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 10:07:04,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976536285] [2020-10-29 10:07:04,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:07:04,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:04,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:07:04,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:07:04,473 INFO L87 Difference]: Start difference. First operand 820 states and 1104 transitions. Second operand 10 states. [2020-10-29 10:07:04,640 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:07:06,150 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-29 10:07:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:07,514 INFO L93 Difference]: Finished difference Result 1159 states and 1567 transitions. [2020-10-29 10:07:07,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:07:07,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 10:07:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:07,522 INFO L225 Difference]: With dead ends: 1159 [2020-10-29 10:07:07,522 INFO L226 Difference]: Without dead ends: 1148 [2020-10-29 10:07:07,523 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 [2020-10-29 10:07:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2020-10-29 10:07:07,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1022. [2020-10-29 10:07:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-10-29 10:07:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1386 transitions. [2020-10-29 10:07:07,631 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1386 transitions. Word has length 42 [2020-10-29 10:07:07,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:07,632 INFO L481 AbstractCegarLoop]: Abstraction has 1022 states and 1386 transitions. [2020-10-29 10:07:07,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:07:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1386 transitions. [2020-10-29 10:07:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 10:07:07,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:07,634 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] [2020-10-29 10:07:07,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 10:07:07,634 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:07,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:07,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1316083366, now seen corresponding path program 1 times [2020-10-29 10:07:07,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:07,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414829823] [2020-10-29 10:07:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:07,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:07,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 10:07:07,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:07,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 10:07:07,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:07,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 10:07:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:07:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:07,906 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:07,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:07,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:07,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:07,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:07:07,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:07,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:07,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:07,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:07,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:07,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:07,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:07,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:07,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:07,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:07,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:07,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:07,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:07,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 10:07:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:08,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:08,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:07:08,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:07:08,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:08,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:07:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:08,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:07:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:08,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:08,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:08,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:08,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:08,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:08,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:08,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414829823] [2020-10-29 10:07:08,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:08,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 10:07:08,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470637731] [2020-10-29 10:07:08,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:07:08,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:08,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:07:08,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:07:08,060 INFO L87 Difference]: Start difference. First operand 1022 states and 1386 transitions. Second operand 10 states. [2020-10-29 10:07:10,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:10,356 INFO L93 Difference]: Finished difference Result 1088 states and 1467 transitions. [2020-10-29 10:07:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 10:07:10,356 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 10:07:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:10,364 INFO L225 Difference]: With dead ends: 1088 [2020-10-29 10:07:10,365 INFO L226 Difference]: Without dead ends: 1072 [2020-10-29 10:07:10,366 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 [2020-10-29 10:07:10,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-10-29 10:07:10,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1020. [2020-10-29 10:07:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-10-29 10:07:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1382 transitions. [2020-10-29 10:07:10,478 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1382 transitions. Word has length 42 [2020-10-29 10:07:10,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:10,478 INFO L481 AbstractCegarLoop]: Abstraction has 1020 states and 1382 transitions. [2020-10-29 10:07:10,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:07:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1382 transitions. [2020-10-29 10:07:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 10:07:10,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:10,481 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] [2020-10-29 10:07:10,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 10:07:10,481 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:10,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1045587256, now seen corresponding path program 1 times [2020-10-29 10:07:10,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:10,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907867240] [2020-10-29 10:07:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:07:10,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 10:07:10,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 10:07:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:07:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:10,794 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:10,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:10,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:07:10,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:10,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:10,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:10,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:07:10,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:10,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:10,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:10,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:07:10,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:10,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 10:07:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:07:10,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:07:10,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:07:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:10,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:07:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:10,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:10,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:10,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:10,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:10,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907867240] [2020-10-29 10:07:10,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:10,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 10:07:10,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827874931] [2020-10-29 10:07:10,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:07:10,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:10,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:07:10,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:07:10,992 INFO L87 Difference]: Start difference. First operand 1020 states and 1382 transitions. Second operand 10 states. [2020-10-29 10:07:13,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:13,142 INFO L93 Difference]: Finished difference Result 1086 states and 1463 transitions. [2020-10-29 10:07:13,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 10:07:13,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-29 10:07:13,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:13,150 INFO L225 Difference]: With dead ends: 1086 [2020-10-29 10:07:13,150 INFO L226 Difference]: Without dead ends: 1065 [2020-10-29 10:07:13,152 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 [2020-10-29 10:07:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-10-29 10:07:13,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1013. [2020-10-29 10:07:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-10-29 10:07:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1373 transitions. [2020-10-29 10:07:13,265 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1373 transitions. Word has length 43 [2020-10-29 10:07:13,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:13,266 INFO L481 AbstractCegarLoop]: Abstraction has 1013 states and 1373 transitions. [2020-10-29 10:07:13,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:07:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1373 transitions. [2020-10-29 10:07:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 10:07:13,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:13,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:07:13,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 10:07:13,268 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:13,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1992956960, now seen corresponding path program 1 times [2020-10-29 10:07:13,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:13,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741173575] [2020-10-29 10:07:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:13,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:13,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 10:07:13,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:13,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 10:07:13,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:13,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 10:07:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 10:07:13,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:13,654 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:13,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:13,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:13,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 10:07:13,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:13,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:13,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:13,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:13,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:13,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:13,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:13,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:13,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:13,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:13,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:13,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:13,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:13,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:13,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:13,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:13,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:07:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:13,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:13,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:07:13,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 10:07:13,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:13,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 10:07:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 10:07:13,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:13,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741173575] [2020-10-29 10:07:13,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:13,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 10:07:13,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240119971] [2020-10-29 10:07:13,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:07:13,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:13,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:07:13,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:07:13,871 INFO L87 Difference]: Start difference. First operand 1013 states and 1373 transitions. Second operand 8 states. [2020-10-29 10:07:14,186 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 10:07:14,433 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 10:07:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:16,376 INFO L93 Difference]: Finished difference Result 1065 states and 1433 transitions. [2020-10-29 10:07:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:07:16,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-29 10:07:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:16,386 INFO L225 Difference]: With dead ends: 1065 [2020-10-29 10:07:16,386 INFO L226 Difference]: Without dead ends: 1040 [2020-10-29 10:07:16,387 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 [2020-10-29 10:07:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-10-29 10:07:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1015. [2020-10-29 10:07:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-29 10:07:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1375 transitions. [2020-10-29 10:07:16,508 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1375 transitions. Word has length 43 [2020-10-29 10:07:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:16,508 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1375 transitions. [2020-10-29 10:07:16,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:07:16,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1375 transitions. [2020-10-29 10:07:16,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 10:07:16,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:16,510 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] [2020-10-29 10:07:16,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 10:07:16,511 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:16,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:16,511 INFO L82 PathProgramCache]: Analyzing trace with hash 844213694, now seen corresponding path program 1 times [2020-10-29 10:07:16,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:16,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101542285] [2020-10-29 10:07:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:16,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:18,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 10:07:18,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:07:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1542 [2020-10-29 10:07:18,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:18,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:07:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:07:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 10:07:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:18,267 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:18,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:18,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:07:18,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:18,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:18,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:18,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:18,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:18,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:07:18,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:18,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:07:18,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:18,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:18,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:07:18,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:18,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:07:18,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:18,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 10:07:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:18,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:18,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:18,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:07:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:18,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:18,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101542285] [2020-10-29 10:07:18,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:18,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 10:07:18,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644031821] [2020-10-29 10:07:18,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:07:18,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:18,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:07:18,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:07:18,472 INFO L87 Difference]: Start difference. First operand 1015 states and 1375 transitions. Second operand 10 states. [2020-10-29 10:07:18,652 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:07:18,994 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2020-10-29 10:07:19,410 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:07:21,013 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 10:07:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:23,709 INFO L93 Difference]: Finished difference Result 1897 states and 2554 transitions. [2020-10-29 10:07:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:07:23,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-29 10:07:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:23,717 INFO L225 Difference]: With dead ends: 1897 [2020-10-29 10:07:23,717 INFO L226 Difference]: Without dead ends: 1385 [2020-10-29 10:07:23,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2020-10-29 10:07:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2020-10-29 10:07:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1084. [2020-10-29 10:07:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-10-29 10:07:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1464 transitions. [2020-10-29 10:07:23,860 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1464 transitions. Word has length 45 [2020-10-29 10:07:23,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:23,860 INFO L481 AbstractCegarLoop]: Abstraction has 1084 states and 1464 transitions. [2020-10-29 10:07:23,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:07:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1464 transitions. [2020-10-29 10:07:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 10:07:23,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:23,862 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] [2020-10-29 10:07:23,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 10:07:23,863 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:23,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1730555436, now seen corresponding path program 1 times [2020-10-29 10:07:23,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:23,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058553805] [2020-10-29 10:07:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 10:07:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 10:07:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:24,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 10:07:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 10:07:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:24,194 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:24,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:24,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:24,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:24,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:07:24,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:24,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:24,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:24,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:24,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:24,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:24,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:24,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:24,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:24,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:24,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:24,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:24,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:24,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:24,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:24,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:24,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:24,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:07:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:24,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:24,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:24,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 10:07:24,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 10:07:24,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:24,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 10:07:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 10:07:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:24,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058553805] [2020-10-29 10:07:24,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:24,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 10:07:24,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152996368] [2020-10-29 10:07:24,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:07:24,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:24,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:07:24,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:07:24,409 INFO L87 Difference]: Start difference. First operand 1084 states and 1464 transitions. Second operand 8 states. [2020-10-29 10:07:24,720 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 10:07:24,922 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 10:07:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:27,120 INFO L93 Difference]: Finished difference Result 1131 states and 1518 transitions. [2020-10-29 10:07:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:07:27,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-29 10:07:27,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:27,128 INFO L225 Difference]: With dead ends: 1131 [2020-10-29 10:07:27,128 INFO L226 Difference]: Without dead ends: 1106 [2020-10-29 10:07:27,129 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 [2020-10-29 10:07:27,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2020-10-29 10:07:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1084. [2020-10-29 10:07:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-10-29 10:07:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1464 transitions. [2020-10-29 10:07:27,317 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1464 transitions. Word has length 44 [2020-10-29 10:07:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:27,318 INFO L481 AbstractCegarLoop]: Abstraction has 1084 states and 1464 transitions. [2020-10-29 10:07:27,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:07:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1464 transitions. [2020-10-29 10:07:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 10:07:27,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:27,321 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] [2020-10-29 10:07:27,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 10:07:27,321 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:27,322 INFO L82 PathProgramCache]: Analyzing trace with hash -641570447, now seen corresponding path program 1 times [2020-10-29 10:07:27,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:27,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997150656] [2020-10-29 10:07:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:27,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 10:07:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-29 10:07:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:27,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 10:07:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:07:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:27,774 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:27,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:27,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:27,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:27,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:07:27,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:27,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:27,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:27,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:27,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:27,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:27,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:27,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:27,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:27,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:27,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:27,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:27,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:27,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:27,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:27,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:07:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:27,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:27,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 10:07:27,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 10:07:27,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:27,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:07:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:28,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:28,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:28,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:28,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:28,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:28,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:28,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:28,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:28,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:28,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997150656] [2020-10-29 10:07:28,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:28,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 10:07:28,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145881901] [2020-10-29 10:07:28,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:07:28,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:28,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:07:28,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:07:28,017 INFO L87 Difference]: Start difference. First operand 1084 states and 1464 transitions. Second operand 10 states. [2020-10-29 10:07:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:31,078 INFO L93 Difference]: Finished difference Result 1132 states and 1520 transitions. [2020-10-29 10:07:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:07:31,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-29 10:07:31,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:31,087 INFO L225 Difference]: With dead ends: 1132 [2020-10-29 10:07:31,088 INFO L226 Difference]: Without dead ends: 1113 [2020-10-29 10:07:31,089 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 [2020-10-29 10:07:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-10-29 10:07:31,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1082. [2020-10-29 10:07:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2020-10-29 10:07:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1460 transitions. [2020-10-29 10:07:31,284 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1460 transitions. Word has length 46 [2020-10-29 10:07:31,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:31,284 INFO L481 AbstractCegarLoop]: Abstraction has 1082 states and 1460 transitions. [2020-10-29 10:07:31,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:07:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1460 transitions. [2020-10-29 10:07:31,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 10:07:31,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:31,288 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] [2020-10-29 10:07:31,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 10:07:31,289 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:31,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:31,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1976545616, now seen corresponding path program 1 times [2020-10-29 10:07:31,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:31,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118197881] [2020-10-29 10:07:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:31,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:31,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:31,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 10:07:31,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:31,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 10:07:31,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:31,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 10:07:31,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 10:07:31,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:31,619 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:31,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:31,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:31,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:31,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:31,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:07:31,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:31,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:31,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:31,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:31,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:31,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:31,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:31,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:31,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:31,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:31,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:31,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:31,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:31,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:31,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:31,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:31,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:31,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:07:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:31,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:31,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 10:07:31,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 10:07:31,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:31,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 10:07:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:07:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:31,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:31,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 10:07:31,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:07:31,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:31,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:07:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:31,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118197881] [2020-10-29 10:07:31,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:31,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 10:07:31,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033705639] [2020-10-29 10:07:31,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:07:31,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:31,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:07:31,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:07:31,878 INFO L87 Difference]: Start difference. First operand 1082 states and 1460 transitions. Second operand 8 states. [2020-10-29 10:07:32,842 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:07:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:34,031 INFO L93 Difference]: Finished difference Result 1164 states and 1560 transitions. [2020-10-29 10:07:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 10:07:34,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-29 10:07:34,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:34,038 INFO L225 Difference]: With dead ends: 1164 [2020-10-29 10:07:34,039 INFO L226 Difference]: Without dead ends: 1060 [2020-10-29 10:07:34,040 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 [2020-10-29 10:07:34,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2020-10-29 10:07:34,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1029. [2020-10-29 10:07:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-10-29 10:07:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1391 transitions. [2020-10-29 10:07:34,162 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1391 transitions. Word has length 47 [2020-10-29 10:07:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:34,162 INFO L481 AbstractCegarLoop]: Abstraction has 1029 states and 1391 transitions. [2020-10-29 10:07:34,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:07:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1391 transitions. [2020-10-29 10:07:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 10:07:34,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:34,164 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] [2020-10-29 10:07:34,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 10:07:34,164 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash 830394501, now seen corresponding path program 1 times [2020-10-29 10:07:34,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:34,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233295393] [2020-10-29 10:07:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 10:07:34,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 10:07:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 10:07:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:07:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,482 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:34,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:07:34,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:34,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:34,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:34,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:34,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:07:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 10:07:34,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 10:07:34,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 10:07:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 10:07:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:34,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:34,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:34,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:34,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:34,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233295393] [2020-10-29 10:07:34,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:34,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 10:07:34,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863560505] [2020-10-29 10:07:34,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:07:34,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:34,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:07:34,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:07:34,691 INFO L87 Difference]: Start difference. First operand 1029 states and 1391 transitions. Second operand 10 states. [2020-10-29 10:07:37,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:37,290 INFO L93 Difference]: Finished difference Result 1077 states and 1447 transitions. [2020-10-29 10:07:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 10:07:37,291 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-29 10:07:37,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:37,296 INFO L225 Difference]: With dead ends: 1077 [2020-10-29 10:07:37,296 INFO L226 Difference]: Without dead ends: 1058 [2020-10-29 10:07:37,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:07:37,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-10-29 10:07:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1027. [2020-10-29 10:07:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-10-29 10:07:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1387 transitions. [2020-10-29 10:07:37,419 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1387 transitions. Word has length 48 [2020-10-29 10:07:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:37,420 INFO L481 AbstractCegarLoop]: Abstraction has 1027 states and 1387 transitions. [2020-10-29 10:07:37,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:07:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1387 transitions. [2020-10-29 10:07:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 10:07:37,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:37,422 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] [2020-10-29 10:07:37,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 10:07:37,422 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:37,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:37,423 INFO L82 PathProgramCache]: Analyzing trace with hash 209019778, now seen corresponding path program 1 times [2020-10-29 10:07:37,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:37,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521775484] [2020-10-29 10:07:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:38,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 10:07:38,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-29 10:07:38,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:38,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:07:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 10:07:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:07:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:38,364 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:38,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:38,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:38,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:38,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:07:38,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:38,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:38,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:38,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:38,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:38,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:38,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:38,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:38,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:38,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:38,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:38,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:38,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:38,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:38,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:38,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:38,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:07:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:38,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:38,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:38,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 10:07:38,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 10:07:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:38,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:07:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 10:07:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:38,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:38,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:38,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:38,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:38,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:38,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:38,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:38,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521775484] [2020-10-29 10:07:38,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:38,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 10:07:38,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432818868] [2020-10-29 10:07:38,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:07:38,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:38,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:07:38,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:07:38,714 INFO L87 Difference]: Start difference. First operand 1027 states and 1387 transitions. Second operand 11 states. [2020-10-29 10:07:39,063 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 10:07:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:40,943 INFO L93 Difference]: Finished difference Result 1079 states and 1448 transitions. [2020-10-29 10:07:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:07:40,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-29 10:07:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:40,952 INFO L225 Difference]: With dead ends: 1079 [2020-10-29 10:07:40,952 INFO L226 Difference]: Without dead ends: 1058 [2020-10-29 10:07:40,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:07:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-10-29 10:07:41,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1027. [2020-10-29 10:07:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-10-29 10:07:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1378 transitions. [2020-10-29 10:07:41,092 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1378 transitions. Word has length 51 [2020-10-29 10:07:41,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:41,092 INFO L481 AbstractCegarLoop]: Abstraction has 1027 states and 1378 transitions. [2020-10-29 10:07:41,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:07:41,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1378 transitions. [2020-10-29 10:07:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:07:41,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:41,095 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] [2020-10-29 10:07:41,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 10:07:41,095 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:41,096 INFO L82 PathProgramCache]: Analyzing trace with hash 260897880, now seen corresponding path program 1 times [2020-10-29 10:07:41,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:41,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583953016] [2020-10-29 10:07:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:41,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:41,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:43,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:43,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 10:07:43,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:07:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2579 [2020-10-29 10:07:43,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:43,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:07:43,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:07:43,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 10:07:43,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:43,867 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:43,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:43,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:43,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:43,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:43,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:43,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:07:43,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:43,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:07:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:43,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:43,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:43,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:43,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:43,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:07:43,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:43,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:07:43,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:43,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:43,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:43,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:43,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:43,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:43,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:07:43,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:44,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 10:07:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:44,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:44,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:07:44,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:44,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:07:44,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:44,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:44,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 10:07:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:44,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583953016] [2020-10-29 10:07:44,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:44,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:07:44,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412771270] [2020-10-29 10:07:44,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:07:44,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:44,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:07:44,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:07:44,071 INFO L87 Difference]: Start difference. First operand 1027 states and 1378 transitions. Second operand 9 states. [2020-10-29 10:07:44,285 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 10:07:44,448 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:07:45,444 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:07:46,046 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-29 10:07:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:47,562 INFO L93 Difference]: Finished difference Result 2047 states and 2767 transitions. [2020-10-29 10:07:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 10:07:47,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-29 10:07:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:47,570 INFO L225 Difference]: With dead ends: 2047 [2020-10-29 10:07:47,570 INFO L226 Difference]: Without dead ends: 1421 [2020-10-29 10:07:47,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-10-29 10:07:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2020-10-29 10:07:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1066. [2020-10-29 10:07:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-29 10:07:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1425 transitions. [2020-10-29 10:07:47,718 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1425 transitions. Word has length 53 [2020-10-29 10:07:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:47,718 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 1425 transitions. [2020-10-29 10:07:47,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:07:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1425 transitions. [2020-10-29 10:07:47,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 10:07:47,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:47,721 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] [2020-10-29 10:07:47,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 10:07:47,721 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:47,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1976466076, now seen corresponding path program 1 times [2020-10-29 10:07:47,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:47,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43875228] [2020-10-29 10:07:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:47,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1699 [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:07:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 10:07:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,658 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:49,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:49,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:07:49,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:49,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:07:49,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:07:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:49,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:07:49,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:07:49,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:07:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 10:07:49,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 10:07:49,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:49,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 10:07:49,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:49,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:49,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:49,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:07:49,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:07:49,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:49,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:07:49,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:49,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43875228] [2020-10-29 10:07:49,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:49,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:07:49,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765319250] [2020-10-29 10:07:49,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:07:49,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:49,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:07:49,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:07:49,997 INFO L87 Difference]: Start difference. First operand 1066 states and 1425 transitions. Second operand 12 states. [2020-10-29 10:07:50,161 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 10:07:50,340 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:07:51,783 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 10:07:52,113 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-29 10:07:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:53,209 INFO L93 Difference]: Finished difference Result 1212 states and 1610 transitions. [2020-10-29 10:07:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:07:53,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-29 10:07:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:53,215 INFO L225 Difference]: With dead ends: 1212 [2020-10-29 10:07:53,216 INFO L226 Difference]: Without dead ends: 1205 [2020-10-29 10:07:53,216 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 [2020-10-29 10:07:53,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2020-10-29 10:07:53,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1066. [2020-10-29 10:07:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-29 10:07:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1424 transitions. [2020-10-29 10:07:53,356 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1424 transitions. Word has length 52 [2020-10-29 10:07:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:53,356 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 1424 transitions. [2020-10-29 10:07:53,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:07:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1424 transitions. [2020-10-29 10:07:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 10:07:53,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:53,359 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] [2020-10-29 10:07:53,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 10:07:53,359 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1247138599, now seen corresponding path program 1 times [2020-10-29 10:07:53,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:53,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677372299] [2020-10-29 10:07:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:53,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:53,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 10:07:53,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:53,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 10:07:53,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:53,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:07:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 10:07:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:53,727 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:53,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:53,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:53,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:53,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:07:53,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:53,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:53,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:53,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:53,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:07:53,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:53,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:53,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:53,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:53,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:53,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:53,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:53,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:07:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:53,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:53,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 10:07:53,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:53,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 10:07:53,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:53,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:07:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:07:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:53,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:07:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:54,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:54,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:54,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:54,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:07:54,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:54,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:07:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:07:54,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:54,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677372299] [2020-10-29 10:07:54,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:54,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 10:07:54,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369594711] [2020-10-29 10:07:54,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:07:54,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:54,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:07:54,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:07:54,047 INFO L87 Difference]: Start difference. First operand 1066 states and 1424 transitions. Second operand 11 states. [2020-10-29 10:07:54,388 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 10:07:54,557 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 10:07:57,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:07:57,179 INFO L93 Difference]: Finished difference Result 1118 states and 1484 transitions. [2020-10-29 10:07:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:07:57,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-29 10:07:57,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:07:57,185 INFO L225 Difference]: With dead ends: 1118 [2020-10-29 10:07:57,185 INFO L226 Difference]: Without dead ends: 1093 [2020-10-29 10:07:57,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:07:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-10-29 10:07:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1069. [2020-10-29 10:07:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2020-10-29 10:07:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1428 transitions. [2020-10-29 10:07:57,318 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1428 transitions. Word has length 52 [2020-10-29 10:07:57,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:07:57,319 INFO L481 AbstractCegarLoop]: Abstraction has 1069 states and 1428 transitions. [2020-10-29 10:07:57,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:07:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1428 transitions. [2020-10-29 10:07:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 10:07:57,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:07:57,321 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] [2020-10-29 10:07:57,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 10:07:57,321 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:07:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:07:57,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1823834996, now seen corresponding path program 1 times [2020-10-29 10:07:57,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:07:57,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386455553] [2020-10-29 10:07:57,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:07:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:57,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:57,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:57,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 10:07:57,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:07:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-29 10:07:57,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:57,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:07:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 10:07:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:07:57,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:57,935 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:07:57,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:07:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:57,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:57,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:57,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:07:57,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:57,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:57,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:57,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:57,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:57,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:07:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:58,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:58,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:58,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:58,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:58,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:07:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:58,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:58,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:58,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:07:58,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:58,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:07:58,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:58,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:07:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:07:58,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:07:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:58,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:58,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 10:07:58,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 10:07:58,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:58,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:07:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 10:07:58,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:58,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:07:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:07:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:07:58,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:07:58,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:07:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:07:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:07:58,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:07:58,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:07:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:07:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:07:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:07:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:07:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:07:58,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386455553] [2020-10-29 10:07:58,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:07:58,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 10:07:58,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056987026] [2020-10-29 10:07:58,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:07:58,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:07:58,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:07:58,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:07:58,209 INFO L87 Difference]: Start difference. First operand 1069 states and 1428 transitions. Second operand 11 states. [2020-10-29 10:07:58,559 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 10:08:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:01,225 INFO L93 Difference]: Finished difference Result 1123 states and 1491 transitions. [2020-10-29 10:08:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:08:01,226 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-29 10:08:01,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:01,232 INFO L225 Difference]: With dead ends: 1123 [2020-10-29 10:08:01,232 INFO L226 Difference]: Without dead ends: 1102 [2020-10-29 10:08:01,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:08:01,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-10-29 10:08:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1069. [2020-10-29 10:08:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2020-10-29 10:08:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1425 transitions. [2020-10-29 10:08:01,372 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1425 transitions. Word has length 52 [2020-10-29 10:08:01,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:01,373 INFO L481 AbstractCegarLoop]: Abstraction has 1069 states and 1425 transitions. [2020-10-29 10:08:01,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:08:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1425 transitions. [2020-10-29 10:08:01,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 10:08:01,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:01,375 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] [2020-10-29 10:08:01,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 10:08:01,375 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:01,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:01,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1964383606, now seen corresponding path program 1 times [2020-10-29 10:08:01,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:01,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614820024] [2020-10-29 10:08:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:01,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:01,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 10:08:01,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:01,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-29 10:08:01,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:01,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 10:08:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:08:01,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:02,023 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:02,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:02,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:02,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:02,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 10:08:02,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:02,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:02,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:02,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:02,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:02,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:02,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:02,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:02,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:02,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:02,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:02,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:02,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:02,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:02,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:02,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:02,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:02,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:02,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:08:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:02,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:02,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:02,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 10:08:02,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:02,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 10:08:02,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:02,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:02,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:02,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 10:08:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:02,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:08:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:02,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:02,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:08:02,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:02,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:02,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:02,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:08:02,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:02,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614820024] [2020-10-29 10:08:02,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:02,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 10:08:02,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470199072] [2020-10-29 10:08:02,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:08:02,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:02,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:08:02,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:08:02,365 INFO L87 Difference]: Start difference. First operand 1069 states and 1425 transitions. Second operand 11 states. [2020-10-29 10:08:02,698 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:08:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:04,526 INFO L93 Difference]: Finished difference Result 1121 states and 1486 transitions. [2020-10-29 10:08:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:08:04,530 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-29 10:08:04,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:04,536 INFO L225 Difference]: With dead ends: 1121 [2020-10-29 10:08:04,536 INFO L226 Difference]: Without dead ends: 1092 [2020-10-29 10:08:04,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:08:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2020-10-29 10:08:04,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1061. [2020-10-29 10:08:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-10-29 10:08:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1412 transitions. [2020-10-29 10:08:04,691 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1412 transitions. Word has length 52 [2020-10-29 10:08:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:04,691 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1412 transitions. [2020-10-29 10:08:04,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:08:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1412 transitions. [2020-10-29 10:08:04,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:08:04,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:04,693 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] [2020-10-29 10:08:04,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 10:08:04,693 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:04,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:04,694 INFO L82 PathProgramCache]: Analyzing trace with hash -26447403, now seen corresponding path program 1 times [2020-10-29 10:08:04,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:04,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604222222] [2020-10-29 10:08:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:05,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:05,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 10:08:05,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:05,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-29 10:08:05,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:05,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:08:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:08:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:05,790 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:05,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:05,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:05,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:05,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:05,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:05,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:05,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:05,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:05,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:05,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:05,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:05,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:08:05,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:05,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:05,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:05,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:05,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:05,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:05,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:05,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:08:05,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:08:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:05,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:05,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 10:08:05,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:05,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 10:08:05,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:05,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 10:08:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 10:08:05,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:06,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:06,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:06,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:08:06,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:06,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:08:06,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:06,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:08:06,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:08:06,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:06,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604222222] [2020-10-29 10:08:06,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:06,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 10:08:06,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221808944] [2020-10-29 10:08:06,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:08:06,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:06,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:08:06,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:08:06,090 INFO L87 Difference]: Start difference. First operand 1061 states and 1412 transitions. Second operand 13 states. [2020-10-29 10:08:06,400 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-10-29 10:08:06,587 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 10:08:06,942 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:08:07,206 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:08:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:10,216 INFO L93 Difference]: Finished difference Result 1264 states and 1680 transitions. [2020-10-29 10:08:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 10:08:10,217 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-29 10:08:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:10,222 INFO L225 Difference]: With dead ends: 1264 [2020-10-29 10:08:10,222 INFO L226 Difference]: Without dead ends: 1212 [2020-10-29 10:08:10,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=202, Invalid=610, Unknown=0, NotChecked=0, Total=812 [2020-10-29 10:08:10,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-29 10:08:10,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1008. [2020-10-29 10:08:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-29 10:08:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1337 transitions. [2020-10-29 10:08:10,380 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1337 transitions. Word has length 53 [2020-10-29 10:08:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:10,381 INFO L481 AbstractCegarLoop]: Abstraction has 1008 states and 1337 transitions. [2020-10-29 10:08:10,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:08:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1337 transitions. [2020-10-29 10:08:10,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:08:10,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:10,383 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] [2020-10-29 10:08:10,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 10:08:10,383 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:10,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1177007653, now seen corresponding path program 1 times [2020-10-29 10:08:10,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:10,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888759650] [2020-10-29 10:08:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:10,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:10,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:10,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 10:08:10,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 10:08:10,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:10,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 10:08:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 10:08:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:10,655 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:10,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:10,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:10,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:10,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:08:10,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:10,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:10,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:10,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:10,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:10,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:10,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:10,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:10,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:10,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:10,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:10,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:10,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:10,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:10,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:10,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:10,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:10,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:08:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:10,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:10,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:10,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:08:10,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 10:08:10,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:10,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 10:08:10,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:10,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:08:10,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:10,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:10,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:08:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:10,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888759650] [2020-10-29 10:08:10,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:10,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 10:08:10,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336865737] [2020-10-29 10:08:10,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:08:10,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:10,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:08:10,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:08:10,833 INFO L87 Difference]: Start difference. First operand 1008 states and 1337 transitions. Second operand 8 states. [2020-10-29 10:08:10,982 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 10:08:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:13,488 INFO L93 Difference]: Finished difference Result 1368 states and 1845 transitions. [2020-10-29 10:08:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:08:13,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-29 10:08:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:13,496 INFO L225 Difference]: With dead ends: 1368 [2020-10-29 10:08:13,496 INFO L226 Difference]: Without dead ends: 1334 [2020-10-29 10:08:13,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:08:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-10-29 10:08:13,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1091. [2020-10-29 10:08:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-10-29 10:08:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1450 transitions. [2020-10-29 10:08:13,641 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1450 transitions. Word has length 53 [2020-10-29 10:08:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:13,642 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1450 transitions. [2020-10-29 10:08:13,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:08:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1450 transitions. [2020-10-29 10:08:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:08:13,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:13,644 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] [2020-10-29 10:08:13,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 10:08:13,644 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:13,645 INFO L82 PathProgramCache]: Analyzing trace with hash 670444251, now seen corresponding path program 1 times [2020-10-29 10:08:13,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:13,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976052644] [2020-10-29 10:08:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:13,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:13,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:14,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:14,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 10:08:14,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:14,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-29 10:08:14,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:14,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:08:14,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:08:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:14,252 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:14,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:14,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:14,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:14,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:14,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:14,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:14,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:14,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:14,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:14,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:14,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:08:14,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:14,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:14,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:14,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:14,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:14,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:08:14,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:14,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:14,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:14,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:14,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:08:14,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:14,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:08:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:14,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:14,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:08:14,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:14,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 10:08:14,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:14,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 10:08:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 10:08:14,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:14,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:14,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:14,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:14,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:08:14,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 10:08:14,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:14,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:08:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 10:08:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:14,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976052644] [2020-10-29 10:08:14,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:14,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 10:08:14,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28586063] [2020-10-29 10:08:14,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:08:14,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:14,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:08:14,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:08:14,685 INFO L87 Difference]: Start difference. First operand 1091 states and 1450 transitions. Second operand 13 states. [2020-10-29 10:08:14,929 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 10:08:15,149 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:08:15,655 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-29 10:08:17,630 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-29 10:08:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:18,499 INFO L93 Difference]: Finished difference Result 1182 states and 1561 transitions. [2020-10-29 10:08:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 10:08:18,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-29 10:08:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:18,505 INFO L225 Difference]: With dead ends: 1182 [2020-10-29 10:08:18,505 INFO L226 Difference]: Without dead ends: 1045 [2020-10-29 10:08:18,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-10-29 10:08:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-10-29 10:08:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 919. [2020-10-29 10:08:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-10-29 10:08:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1216 transitions. [2020-10-29 10:08:18,624 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1216 transitions. Word has length 53 [2020-10-29 10:08:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:18,624 INFO L481 AbstractCegarLoop]: Abstraction has 919 states and 1216 transitions. [2020-10-29 10:08:18,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:08:18,625 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1216 transitions. [2020-10-29 10:08:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 10:08:18,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:18,626 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] [2020-10-29 10:08:18,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 10:08:18,626 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:18,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1089951442, now seen corresponding path program 1 times [2020-10-29 10:08:18,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:18,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952582304] [2020-10-29 10:08:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:18,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:18,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:18,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 10:08:18,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 10:08:18,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:18,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 10:08:18,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 10:08:18,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:18,869 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:18,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:18,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:18,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:18,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:08:18,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:18,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:18,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:18,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:18,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:18,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:18,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:18,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:18,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:18,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:18,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:18,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:18,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:18,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:18,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:18,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:18,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 10:08:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:18,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:18,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:08:18,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:18,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:18,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:18,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 10:08:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:08:18,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:18,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952582304] [2020-10-29 10:08:18,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:18,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 10:08:18,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451747466] [2020-10-29 10:08:18,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:08:18,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:18,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:08:18,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:08:18,992 INFO L87 Difference]: Start difference. First operand 919 states and 1216 transitions. Second operand 8 states. [2020-10-29 10:08:19,145 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:08:19,745 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:08:21,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:21,446 INFO L93 Difference]: Finished difference Result 1007 states and 1307 transitions. [2020-10-29 10:08:21,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:08:21,446 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-29 10:08:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:21,450 INFO L225 Difference]: With dead ends: 1007 [2020-10-29 10:08:21,450 INFO L226 Difference]: Without dead ends: 680 [2020-10-29 10:08:21,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:08:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-10-29 10:08:21,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 642. [2020-10-29 10:08:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-29 10:08:21,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 826 transitions. [2020-10-29 10:08:21,528 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 826 transitions. Word has length 54 [2020-10-29 10:08:21,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:21,528 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 826 transitions. [2020-10-29 10:08:21,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:08:21,528 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 826 transitions. [2020-10-29 10:08:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 10:08:21,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:21,529 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] [2020-10-29 10:08:21,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 10:08:21,530 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:21,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:21,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1003179231, now seen corresponding path program 1 times [2020-10-29 10:08:21,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:21,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862858057] [2020-10-29 10:08:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:21,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:21,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 10:08:21,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:21,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 10:08:21,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:21,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:21,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:08:21,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 10:08:21,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 10:08:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:21,910 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:21,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:21,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:21,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:21,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:21,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:21,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:21,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:21,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:21,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:21,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:08:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:22,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:22,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:08:22,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 10:08:22,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:22,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:08:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:08:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:22,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:22,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:22,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:22,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:08:22,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 10:08:22,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:22,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:08:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:22,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862858057] [2020-10-29 10:08:22,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:22,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 10:08:22,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179403703] [2020-10-29 10:08:22,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:08:22,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:22,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:08:22,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:08:22,212 INFO L87 Difference]: Start difference. First operand 642 states and 826 transitions. Second operand 13 states. [2020-10-29 10:08:25,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:25,033 INFO L93 Difference]: Finished difference Result 677 states and 866 transitions. [2020-10-29 10:08:25,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:08:25,034 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-29 10:08:25,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:25,038 INFO L225 Difference]: With dead ends: 677 [2020-10-29 10:08:25,038 INFO L226 Difference]: Without dead ends: 672 [2020-10-29 10:08:25,039 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 [2020-10-29 10:08:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-10-29 10:08:25,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 650. [2020-10-29 10:08:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-10-29 10:08:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 834 transitions. [2020-10-29 10:08:25,121 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 834 transitions. Word has length 54 [2020-10-29 10:08:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:25,121 INFO L481 AbstractCegarLoop]: Abstraction has 650 states and 834 transitions. [2020-10-29 10:08:25,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:08:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 834 transitions. [2020-10-29 10:08:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 10:08:25,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:25,123 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] [2020-10-29 10:08:25,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 10:08:25,123 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1011760961, now seen corresponding path program 1 times [2020-10-29 10:08:25,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:25,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441939278] [2020-10-29 10:08:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:25,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:25,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:25,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 10:08:25,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:08:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-29 10:08:25,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:25,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:08:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:08:25,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 10:08:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:25,970 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:25,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:25,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:25,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:25,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:25,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:25,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:25,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:25,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:25,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:26,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:26,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:26,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:26,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:08:26,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:26,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:08:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:26,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:26,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:26,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:26,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:26,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:26,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:26,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:26,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:08:26,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:08:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:26,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:26,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:08:26,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 10:08:26,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:26,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 10:08:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:26,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:26,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:26,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:26,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:08:26,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:26,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:26,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:26,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:26,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441939278] [2020-10-29 10:08:26,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:26,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:08:26,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013283424] [2020-10-29 10:08:26,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:08:26,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:26,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:08:26,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:08:26,158 INFO L87 Difference]: Start difference. First operand 650 states and 834 transitions. Second operand 9 states. [2020-10-29 10:08:26,345 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 10:08:27,854 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:08:29,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:29,111 INFO L93 Difference]: Finished difference Result 814 states and 1067 transitions. [2020-10-29 10:08:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:08:29,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-29 10:08:29,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:29,116 INFO L225 Difference]: With dead ends: 814 [2020-10-29 10:08:29,116 INFO L226 Difference]: Without dead ends: 795 [2020-10-29 10:08:29,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:08:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-10-29 10:08:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 636. [2020-10-29 10:08:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-29 10:08:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 817 transitions. [2020-10-29 10:08:29,200 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 817 transitions. Word has length 54 [2020-10-29 10:08:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:29,200 INFO L481 AbstractCegarLoop]: Abstraction has 636 states and 817 transitions. [2020-10-29 10:08:29,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:08:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 817 transitions. [2020-10-29 10:08:29,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 10:08:29,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:29,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:08:29,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 10:08:29,201 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:29,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:29,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1732674308, now seen corresponding path program 1 times [2020-10-29 10:08:29,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:29,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243619029] [2020-10-29 10:08:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 10:08:29,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 10:08:29,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:08:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 10:08:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 10:08:29,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,556 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:29,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:29,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:29,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:29,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:29,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:29,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:29,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:08:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 10:08:29,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 10:08:29,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:08:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 10:08:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:08:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 10:08:29,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:08:29,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 10:08:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 10:08:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:29,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:29,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:29,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243619029] [2020-10-29 10:08:29,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:29,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 10:08:29,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686139969] [2020-10-29 10:08:29,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:08:29,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:29,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:08:29,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:08:29,877 INFO L87 Difference]: Start difference. First operand 636 states and 817 transitions. Second operand 14 states. [2020-10-29 10:08:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:32,357 INFO L93 Difference]: Finished difference Result 672 states and 857 transitions. [2020-10-29 10:08:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:08:32,357 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-29 10:08:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:32,360 INFO L225 Difference]: With dead ends: 672 [2020-10-29 10:08:32,360 INFO L226 Difference]: Without dead ends: 643 [2020-10-29 10:08:32,361 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 [2020-10-29 10:08:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-29 10:08:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 624. [2020-10-29 10:08:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-10-29 10:08:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 801 transitions. [2020-10-29 10:08:32,454 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 801 transitions. Word has length 56 [2020-10-29 10:08:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:32,454 INFO L481 AbstractCegarLoop]: Abstraction has 624 states and 801 transitions. [2020-10-29 10:08:32,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:08:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 801 transitions. [2020-10-29 10:08:32,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 10:08:32,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:32,455 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] [2020-10-29 10:08:32,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 10:08:32,456 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:32,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1717052555, now seen corresponding path program 1 times [2020-10-29 10:08:32,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:32,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762488494] [2020-10-29 10:08:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:32,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:32,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:32,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 10:08:32,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:32,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 10:08:32,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:32,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 10:08:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 10:08:32,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:32,890 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:32,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:32,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:32,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:08:32,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:32,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:32,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:32,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:32,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:32,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:32,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:32,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:32,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:32,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:32,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:32,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:32,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:32,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:32,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:32,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:32,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:33,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 10:08:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:33,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:08:33,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:08:33,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:33,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:33,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:08:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:33,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:33,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:33,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:33,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:33,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:33,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:33,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 10:08:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:33,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:33,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:33,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:33,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:33,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:33,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:08:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:33,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762488494] [2020-10-29 10:08:33,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:33,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 10:08:33,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111687641] [2020-10-29 10:08:33,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:08:33,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:33,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:08:33,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:08:33,049 INFO L87 Difference]: Start difference. First operand 624 states and 801 transitions. Second operand 8 states. [2020-10-29 10:08:33,185 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 10:08:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:34,758 INFO L93 Difference]: Finished difference Result 978 states and 1261 transitions. [2020-10-29 10:08:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:08:34,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-10-29 10:08:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:34,762 INFO L225 Difference]: With dead ends: 978 [2020-10-29 10:08:34,762 INFO L226 Difference]: Without dead ends: 652 [2020-10-29 10:08:34,764 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 [2020-10-29 10:08:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-10-29 10:08:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 629. [2020-10-29 10:08:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2020-10-29 10:08:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 808 transitions. [2020-10-29 10:08:34,862 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 808 transitions. Word has length 62 [2020-10-29 10:08:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:34,862 INFO L481 AbstractCegarLoop]: Abstraction has 629 states and 808 transitions. [2020-10-29 10:08:34,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:08:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 808 transitions. [2020-10-29 10:08:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 10:08:34,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:34,865 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] [2020-10-29 10:08:34,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 10:08:34,865 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:34,865 INFO L82 PathProgramCache]: Analyzing trace with hash 23176318, now seen corresponding path program 1 times [2020-10-29 10:08:34,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:34,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48475379] [2020-10-29 10:08:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:35,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:35,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 10:08:35,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 10:08:35,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:35,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-29 10:08:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:08:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:35,240 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:35,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:35,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:35,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:35,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:08:35,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:35,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:35,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:35,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:35,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:35,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:35,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:35,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:35,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:35,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:35,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:35,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:35,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:35,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:35,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:35,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:35,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:35,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:35,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 10:08:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:35,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:35,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 10:08:35,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:35,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 10:08:35,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:35,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 10:08:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:08:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:35,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:08:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:35,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:35,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:35,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:08:35,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 10:08:35,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:35,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:08:35,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:35,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 10:08:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:35,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:08:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:35,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:35,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:35,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:35,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:35,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:35,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:35,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:35,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:35,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:35,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:35,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48475379] [2020-10-29 10:08:35,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:35,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 10:08:35,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402383606] [2020-10-29 10:08:35,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:08:35,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:35,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:08:35,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:08:35,486 INFO L87 Difference]: Start difference. First operand 629 states and 808 transitions. Second operand 10 states. [2020-10-29 10:08:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:37,078 INFO L93 Difference]: Finished difference Result 940 states and 1212 transitions. [2020-10-29 10:08:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:08:37,078 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-29 10:08:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:37,081 INFO L225 Difference]: With dead ends: 940 [2020-10-29 10:08:37,081 INFO L226 Difference]: Without dead ends: 594 [2020-10-29 10:08:37,083 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 [2020-10-29 10:08:37,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-29 10:08:37,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 558. [2020-10-29 10:08:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-10-29 10:08:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 711 transitions. [2020-10-29 10:08:37,172 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 711 transitions. Word has length 65 [2020-10-29 10:08:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:37,173 INFO L481 AbstractCegarLoop]: Abstraction has 558 states and 711 transitions. [2020-10-29 10:08:37,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:08:37,173 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 711 transitions. [2020-10-29 10:08:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 10:08:37,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:37,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:08:37,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 10:08:37,175 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:37,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1093737417, now seen corresponding path program 1 times [2020-10-29 10:08:37,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:37,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655382749] [2020-10-29 10:08:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:38,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:38,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 10:08:38,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1296 [2020-10-29 10:08:38,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:38,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:08:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 10:08:38,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 10:08:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:38,668 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:38,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:38,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:38,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:38,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:38,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:08:38,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:38,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:38,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:38,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:38,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:38,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:38,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:38,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:38,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:38,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:38,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:38,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:38,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:38,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:38,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:38,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:38,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:38,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:08:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:38,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:39,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:39,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 10:08:39,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-29 10:08:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:39,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 10:08:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:08:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:39,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:39,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:39,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:08:39,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:39,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:39,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:39,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:39,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:08:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:39,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:39,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:08:39,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:39,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:39,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:39,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:39,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:39,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:39,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:08:39,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:39,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655382749] [2020-10-29 10:08:39,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:39,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 10:08:39,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29359995] [2020-10-29 10:08:39,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:08:39,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:39,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:08:39,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:08:39,321 INFO L87 Difference]: Start difference. First operand 558 states and 711 transitions. Second operand 13 states. [2020-10-29 10:08:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:41,637 INFO L93 Difference]: Finished difference Result 590 states and 747 transitions. [2020-10-29 10:08:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 10:08:41,637 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-29 10:08:41,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:41,640 INFO L225 Difference]: With dead ends: 590 [2020-10-29 10:08:41,640 INFO L226 Difference]: Without dead ends: 568 [2020-10-29 10:08:41,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:08:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-29 10:08:41,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 550. [2020-10-29 10:08:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-29 10:08:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 700 transitions. [2020-10-29 10:08:41,731 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 700 transitions. Word has length 60 [2020-10-29 10:08:41,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:41,731 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 700 transitions. [2020-10-29 10:08:41,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:08:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 700 transitions. [2020-10-29 10:08:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 10:08:41,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:41,733 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] [2020-10-29 10:08:41,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 10:08:41,733 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1941005741, now seen corresponding path program 1 times [2020-10-29 10:08:41,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:41,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551189333] [2020-10-29 10:08:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:42,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:42,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 10:08:42,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 10:08:42,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:42,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:08:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 10:08:42,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 10:08:42,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:42,183 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:42,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:42,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:42,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:42,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:08:42,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:42,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:42,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:42,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:42,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:42,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:42,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:42,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:42,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:42,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:42,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:42,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:42,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:42,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:42,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:42,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:42,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:42,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:42,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:42,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:08:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:42,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:42,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:42,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 10:08:42,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:42,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 10:08:42,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:42,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:08:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 10:08:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:42,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 10:08:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:42,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:42,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:42,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:08:42,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:42,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 10:08:42,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:42,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:08:42,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:42,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551189333] [2020-10-29 10:08:42,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:42,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 10:08:42,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168674500] [2020-10-29 10:08:42,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:08:42,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:42,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:08:42,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:08:42,519 INFO L87 Difference]: Start difference. First operand 550 states and 700 transitions. Second operand 13 states. [2020-10-29 10:08:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:45,155 INFO L93 Difference]: Finished difference Result 583 states and 737 transitions. [2020-10-29 10:08:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:08:45,156 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-29 10:08:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:45,159 INFO L225 Difference]: With dead ends: 583 [2020-10-29 10:08:45,159 INFO L226 Difference]: Without dead ends: 564 [2020-10-29 10:08:45,160 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 [2020-10-29 10:08:45,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-10-29 10:08:45,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 546. [2020-10-29 10:08:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-10-29 10:08:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 694 transitions. [2020-10-29 10:08:45,241 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 694 transitions. Word has length 59 [2020-10-29 10:08:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:45,242 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 694 transitions. [2020-10-29 10:08:45,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:08:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 694 transitions. [2020-10-29 10:08:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 10:08:45,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:45,243 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] [2020-10-29 10:08:45,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 10:08:45,243 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:45,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash -2028881367, now seen corresponding path program 1 times [2020-10-29 10:08:45,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:45,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829463432] [2020-10-29 10:08:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:45,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:45,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 10:08:45,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 10:08:45,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:45,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-29 10:08:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 10:08:45,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:45,591 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:45,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:45,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:45,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:45,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:45,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:08:45,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:45,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:45,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:45,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:45,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:45,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:45,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:08:45,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:45,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:45,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:45,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:45,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:45,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:45,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:45,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:45,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:08:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:45,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:45,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 10:08:45,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 10:08:45,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:45,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:45,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 10:08:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 10:08:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:45,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:45,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:08:45,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:45,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:45,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:45,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:45,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:45,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:45,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 10:08:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:45,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:45,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:45,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:08:45,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:45,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:45,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:45,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:08:45,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:45,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829463432] [2020-10-29 10:08:45,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:45,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:08:45,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741472897] [2020-10-29 10:08:45,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:08:45,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:45,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:08:45,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:08:45,863 INFO L87 Difference]: Start difference. First operand 546 states and 694 transitions. Second operand 12 states. [2020-10-29 10:08:47,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:47,923 INFO L93 Difference]: Finished difference Result 584 states and 737 transitions. [2020-10-29 10:08:47,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:08:47,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-29 10:08:47,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:47,927 INFO L225 Difference]: With dead ends: 584 [2020-10-29 10:08:47,927 INFO L226 Difference]: Without dead ends: 559 [2020-10-29 10:08:47,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:08:47,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-10-29 10:08:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 541. [2020-10-29 10:08:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-10-29 10:08:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 688 transitions. [2020-10-29 10:08:48,010 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 688 transitions. Word has length 61 [2020-10-29 10:08:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:48,011 INFO L481 AbstractCegarLoop]: Abstraction has 541 states and 688 transitions. [2020-10-29 10:08:48,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:08:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 688 transitions. [2020-10-29 10:08:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 10:08:48,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:48,012 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] [2020-10-29 10:08:48,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 10:08:48,013 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:48,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1357430647, now seen corresponding path program 1 times [2020-10-29 10:08:48,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:48,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277815193] [2020-10-29 10:08:48,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:48,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:48,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 10:08:48,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 10:08:48,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:48,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:48,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:08:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:08:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 10:08:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:48,305 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:48,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:48,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:48,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:48,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:48,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:08:48,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:48,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:48,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:48,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:48,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:08:48,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:48,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:08:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:48,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:48,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:48,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:48,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:48,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:48,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:08:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:48,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 10:08:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:48,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 10:08:48,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 10:08:48,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:48,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:08:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 10:08:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 10:08:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:48,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:08:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:48,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:08:48,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:48,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:48,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:08:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:48,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:48,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:48,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:48,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:48,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:48,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:08:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:48,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:48,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:48,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:48,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:48,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:48,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:08:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:08:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:48,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277815193] [2020-10-29 10:08:48,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:48,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 10:08:48,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191873989] [2020-10-29 10:08:48,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:08:48,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:48,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:08:48,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:08:48,532 INFO L87 Difference]: Start difference. First operand 541 states and 688 transitions. Second operand 11 states. [2020-10-29 10:08:48,702 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:08:48,890 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:08:50,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:50,919 INFO L93 Difference]: Finished difference Result 798 states and 1004 transitions. [2020-10-29 10:08:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:08:50,921 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-29 10:08:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:50,926 INFO L225 Difference]: With dead ends: 798 [2020-10-29 10:08:50,926 INFO L226 Difference]: Without dead ends: 510 [2020-10-29 10:08:50,927 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 [2020-10-29 10:08:50,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-29 10:08:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 488. [2020-10-29 10:08:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-29 10:08:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 607 transitions. [2020-10-29 10:08:51,006 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 607 transitions. Word has length 69 [2020-10-29 10:08:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:51,007 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 607 transitions. [2020-10-29 10:08:51,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:08:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 607 transitions. [2020-10-29 10:08:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 10:08:51,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:51,008 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] [2020-10-29 10:08:51,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 10:08:51,008 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:51,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:51,009 INFO L82 PathProgramCache]: Analyzing trace with hash 380334433, now seen corresponding path program 1 times [2020-10-29 10:08:51,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:51,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354298251] [2020-10-29 10:08:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:51,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:52,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:52,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 10:08:52,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:08:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-10-29 10:08:52,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:52,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:08:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 10:08:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:08:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:52,353 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:52,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:52,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:52,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:08:52,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:52,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:52,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:52,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:52,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:52,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:52,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:52,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:52,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:52,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:52,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:52,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:52,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:52,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:52,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:52,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:52,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:52,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:08:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:52,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:52,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:52,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:52,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 10:08:52,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:08:52,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-29 10:08:52,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:52,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:08:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 10:08:52,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:08:52,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:53,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:08:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:53,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:53,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 10:08:53,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:08:53,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 10:08:53,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:53,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:53,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:08:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 10:08:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:53,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 10:08:53,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:53,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:53,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:53,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:53,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:53,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:53,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354298251] [2020-10-29 10:08:53,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:53,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:08:53,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310329736] [2020-10-29 10:08:53,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:08:53,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:53,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:08:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:08:53,185 INFO L87 Difference]: Start difference. First operand 488 states and 607 transitions. Second operand 12 states. [2020-10-29 10:08:55,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:55,758 INFO L93 Difference]: Finished difference Result 515 states and 638 transitions. [2020-10-29 10:08:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:08:55,759 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-29 10:08:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:55,761 INFO L225 Difference]: With dead ends: 515 [2020-10-29 10:08:55,761 INFO L226 Difference]: Without dead ends: 474 [2020-10-29 10:08:55,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:08:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-29 10:08:55,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 456. [2020-10-29 10:08:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-29 10:08:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 562 transitions. [2020-10-29 10:08:55,813 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 562 transitions. Word has length 64 [2020-10-29 10:08:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:55,813 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 562 transitions. [2020-10-29 10:08:55,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:08:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 562 transitions. [2020-10-29 10:08:55,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 10:08:55,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:55,815 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] [2020-10-29 10:08:55,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 10:08:55,815 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:55,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1949674044, now seen corresponding path program 1 times [2020-10-29 10:08:55,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:55,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032701423] [2020-10-29 10:08:55,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:55,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:56,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:56,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 10:08:56,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:56,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 10:08:56,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:56,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:08:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 10:08:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:08:56,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:56,274 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:56,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:56,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:56,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:08:56,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:56,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:56,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:56,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:56,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:56,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:56,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:56,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:56,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:56,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:56,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:56,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:56,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:56,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:56,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:56,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:56,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:56,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:56,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 10:08:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:56,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:56,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:08:56,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:08:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 10:08:56,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:56,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:08:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:08:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:56,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:56,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:08:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:56,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:08:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:56,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:56,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:56,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:56,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:08:56,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:56,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:56,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:56,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:08:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:56,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:56,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:56,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:08:56,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:56,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:56,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:56,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:56,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032701423] [2020-10-29 10:08:56,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:56,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:08:56,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820040801] [2020-10-29 10:08:56,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:08:56,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:56,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:08:56,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:08:56,521 INFO L87 Difference]: Start difference. First operand 456 states and 562 transitions. Second operand 12 states. [2020-10-29 10:08:57,296 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 10:08:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:08:58,520 INFO L93 Difference]: Finished difference Result 718 states and 896 transitions. [2020-10-29 10:08:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 10:08:58,520 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-29 10:08:58,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:08:58,524 INFO L225 Difference]: With dead ends: 718 [2020-10-29 10:08:58,524 INFO L226 Difference]: Without dead ends: 494 [2020-10-29 10:08:58,525 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 [2020-10-29 10:08:58,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-29 10:08:58,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 459. [2020-10-29 10:08:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-29 10:08:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 564 transitions. [2020-10-29 10:08:58,595 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 564 transitions. Word has length 71 [2020-10-29 10:08:58,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:08:58,595 INFO L481 AbstractCegarLoop]: Abstraction has 459 states and 564 transitions. [2020-10-29 10:08:58,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:08:58,596 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 564 transitions. [2020-10-29 10:08:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 10:08:58,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:08:58,596 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] [2020-10-29 10:08:58,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 10:08:58,597 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:08:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:08:58,597 INFO L82 PathProgramCache]: Analyzing trace with hash 209133578, now seen corresponding path program 1 times [2020-10-29 10:08:58,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:08:58,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953319645] [2020-10-29 10:08:58,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:08:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:58,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:58,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:58,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 10:08:58,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 10:08:58,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:58,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:08:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 10:08:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:08:58,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:58,950 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:08:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:08:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:58,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:58,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:08:58,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:58,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:59,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:08:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:59,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:59,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:59,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:59,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:08:59,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:59,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:59,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:59,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:59,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:59,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:59,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:08:59,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:08:59,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:59,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:08:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:08:59,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:59,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:08:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:59,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:59,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:08:59,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 10:08:59,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:59,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:08:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:08:59,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:59,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:08:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:08:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:08:59,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:08:59,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:08:59,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:08:59,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:08:59,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:08:59,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:08:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:08:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:08:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:08:59,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:08:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:08:59,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953319645] [2020-10-29 10:08:59,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:08:59,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 10:08:59,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969482783] [2020-10-29 10:08:59,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:08:59,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:08:59,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:08:59,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:08:59,296 INFO L87 Difference]: Start difference. First operand 459 states and 564 transitions. Second operand 14 states. [2020-10-29 10:09:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:01,636 INFO L93 Difference]: Finished difference Result 493 states and 603 transitions. [2020-10-29 10:09:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:09:01,637 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-29 10:09:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:01,639 INFO L225 Difference]: With dead ends: 493 [2020-10-29 10:09:01,640 INFO L226 Difference]: Without dead ends: 471 [2020-10-29 10:09:01,640 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 [2020-10-29 10:09:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-29 10:09:01,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 455. [2020-10-29 10:09:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-10-29 10:09:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 558 transitions. [2020-10-29 10:09:01,702 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 558 transitions. Word has length 64 [2020-10-29 10:09:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:01,702 INFO L481 AbstractCegarLoop]: Abstraction has 455 states and 558 transitions. [2020-10-29 10:09:01,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:09:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 558 transitions. [2020-10-29 10:09:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 10:09:01,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:01,703 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] [2020-10-29 10:09:01,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 10:09:01,703 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:01,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:01,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1722909110, now seen corresponding path program 1 times [2020-10-29 10:09:01,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:01,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518489812] [2020-10-29 10:09:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:01,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:01,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 10:09:01,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:01,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 10:09:01,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:01,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:09:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 10:09:01,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 10:09:01,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:02,084 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:02,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:02,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:02,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:02,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:02,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:02,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:02,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:02,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:02,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:02,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:02,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:02,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:02,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:02,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:02,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:02,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:02,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:02,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:02,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:02,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:02,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 10:09:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:02,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:02,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 10:09:02,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:02,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 10:09:02,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:02,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:09:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 10:09:02,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:02,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:09:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:02,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:02,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:09:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:09:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:02,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:02,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:09:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:02,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518489812] [2020-10-29 10:09:02,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:02,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 10:09:02,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526269387] [2020-10-29 10:09:02,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:09:02,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:02,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:09:02,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:09:02,393 INFO L87 Difference]: Start difference. First operand 455 states and 558 transitions. Second operand 13 states. [2020-10-29 10:09:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:04,505 INFO L93 Difference]: Finished difference Result 483 states and 590 transitions. [2020-10-29 10:09:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:09:04,506 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-29 10:09:04,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:04,508 INFO L225 Difference]: With dead ends: 483 [2020-10-29 10:09:04,508 INFO L226 Difference]: Without dead ends: 446 [2020-10-29 10:09:04,508 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 [2020-10-29 10:09:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-29 10:09:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 430. [2020-10-29 10:09:04,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-29 10:09:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 528 transitions. [2020-10-29 10:09:04,555 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 528 transitions. Word has length 65 [2020-10-29 10:09:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:04,556 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 528 transitions. [2020-10-29 10:09:04,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:09:04,556 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 528 transitions. [2020-10-29 10:09:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 10:09:04,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:04,556 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] [2020-10-29 10:09:04,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 10:09:04,557 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:04,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:04,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1662306823, now seen corresponding path program 1 times [2020-10-29 10:09:04,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:04,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983537352] [2020-10-29 10:09:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:04,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:04,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 10:09:04,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:04,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-29 10:09:04,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:04,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:09:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 10:09:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:09:04,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:04,885 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:04,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:04,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:04,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:04,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:04,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:04,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:04,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:04,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:04,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:04,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:04,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:04,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:04,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:04,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:04,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:04,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:04,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:04,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:04,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:05,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:09:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:05,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:05,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:05,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 10:09:05,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 10:09:05,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:05,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:09:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:09:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:05,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:05,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:05,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:09:05,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:09:05,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:05,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:09:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:05,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983537352] [2020-10-29 10:09:05,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:05,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 10:09:05,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613949629] [2020-10-29 10:09:05,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:09:05,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:05,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:09:05,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:09:05,188 INFO L87 Difference]: Start difference. First operand 430 states and 528 transitions. Second operand 14 states. [2020-10-29 10:09:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:07,357 INFO L93 Difference]: Finished difference Result 464 states and 567 transitions. [2020-10-29 10:09:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:09:07,366 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-29 10:09:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:07,368 INFO L225 Difference]: With dead ends: 464 [2020-10-29 10:09:07,368 INFO L226 Difference]: Without dead ends: 441 [2020-10-29 10:09:07,368 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 [2020-10-29 10:09:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-29 10:09:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 425. [2020-10-29 10:09:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-29 10:09:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 521 transitions. [2020-10-29 10:09:07,419 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 521 transitions. Word has length 65 [2020-10-29 10:09:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:07,419 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 521 transitions. [2020-10-29 10:09:07,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:09:07,419 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 521 transitions. [2020-10-29 10:09:07,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 10:09:07,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:07,420 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] [2020-10-29 10:09:07,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 10:09:07,420 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:07,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:07,421 INFO L82 PathProgramCache]: Analyzing trace with hash -430991321, now seen corresponding path program 1 times [2020-10-29 10:09:07,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:07,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820579469] [2020-10-29 10:09:07,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:07,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:07,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 10:09:07,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:07,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 10:09:07,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:07,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:09:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 10:09:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:09:07,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:07,740 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:07,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:07,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:07,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:07,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:09:07,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:07,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:07,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:07,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:07,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:07,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:09:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:07,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:07,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:07,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 10:09:07,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:07,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 10:09:07,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:07,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:09:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:07,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:09:07,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:08,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:08,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:09:08,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:09:08,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:08,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:09:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:08,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820579469] [2020-10-29 10:09:08,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:08,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 10:09:08,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617413778] [2020-10-29 10:09:08,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:09:08,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:08,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:09:08,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:09:08,040 INFO L87 Difference]: Start difference. First operand 425 states and 521 transitions. Second operand 14 states. [2020-10-29 10:09:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:10,141 INFO L93 Difference]: Finished difference Result 459 states and 560 transitions. [2020-10-29 10:09:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:09:10,142 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-29 10:09:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:10,144 INFO L225 Difference]: With dead ends: 459 [2020-10-29 10:09:10,144 INFO L226 Difference]: Without dead ends: 437 [2020-10-29 10:09:10,145 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 [2020-10-29 10:09:10,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-29 10:09:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 421. [2020-10-29 10:09:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-29 10:09:10,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 515 transitions. [2020-10-29 10:09:10,209 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 515 transitions. Word has length 65 [2020-10-29 10:09:10,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:10,209 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 515 transitions. [2020-10-29 10:09:10,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:09:10,209 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 515 transitions. [2020-10-29 10:09:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 10:09:10,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:10,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:09:10,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 10:09:10,210 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:10,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:10,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1054583457, now seen corresponding path program 1 times [2020-10-29 10:09:10,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:10,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517865992] [2020-10-29 10:09:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:10,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:10,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:10,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 10:09:10,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:09:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-29 10:09:10,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:10,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 10:09:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 10:09:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:10,966 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:10,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:10,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:10,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:11,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:11,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:11,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:11,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:11,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:11,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:11,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:11,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:11,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:11,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:11,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:11,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:11,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:11,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:11,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:11,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:11,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:11,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 10:09:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:11,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:11,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:11,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 10:09:11,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:11,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:11,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:11,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 10:09:11,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:11,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:11,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:11,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:11,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:09:11,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:11,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:11,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:11,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:11,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:09:11,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:11,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:11,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:11,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:11,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:11,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:11,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:09:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:11,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:11,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:11,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:11,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:11,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:11,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:11,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 10:09:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:11,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517865992] [2020-10-29 10:09:11,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:11,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 10:09:11,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850390011] [2020-10-29 10:09:11,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:09:11,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:11,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:09:11,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:09:11,164 INFO L87 Difference]: Start difference. First operand 421 states and 515 transitions. Second operand 9 states. [2020-10-29 10:09:11,834 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:09:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:13,071 INFO L93 Difference]: Finished difference Result 836 states and 1033 transitions. [2020-10-29 10:09:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:09:13,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-29 10:09:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:13,074 INFO L225 Difference]: With dead ends: 836 [2020-10-29 10:09:13,074 INFO L226 Difference]: Without dead ends: 582 [2020-10-29 10:09:13,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:09:13,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-29 10:09:13,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 542. [2020-10-29 10:09:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-10-29 10:09:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 664 transitions. [2020-10-29 10:09:13,139 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 664 transitions. Word has length 73 [2020-10-29 10:09:13,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:13,139 INFO L481 AbstractCegarLoop]: Abstraction has 542 states and 664 transitions. [2020-10-29 10:09:13,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:09:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 664 transitions. [2020-10-29 10:09:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 10:09:13,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:13,140 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] [2020-10-29 10:09:13,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 10:09:13,141 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:13,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:13,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1930781160, now seen corresponding path program 1 times [2020-10-29 10:09:13,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:13,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733312393] [2020-10-29 10:09:13,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:13,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:13,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 10:09:13,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 10:09:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:13,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:09:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 10:09:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 10:09:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:13,489 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:13,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:13,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:13,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:13,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:09:13,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:13,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:13,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:13,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:13,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:13,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:13,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:13,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:13,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:13,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:09:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:13,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:13,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 10:09:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:13,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:13,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:13,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:09:13,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:09:13,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:13,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:09:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:13,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733312393] [2020-10-29 10:09:13,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:13,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 10:09:13,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765004974] [2020-10-29 10:09:13,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:09:13,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:13,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:09:13,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:09:13,761 INFO L87 Difference]: Start difference. First operand 542 states and 664 transitions. Second operand 14 states. [2020-10-29 10:09:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:15,724 INFO L93 Difference]: Finished difference Result 576 states and 704 transitions. [2020-10-29 10:09:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:09:15,725 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-10-29 10:09:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:15,728 INFO L225 Difference]: With dead ends: 576 [2020-10-29 10:09:15,728 INFO L226 Difference]: Without dead ends: 532 [2020-10-29 10:09:15,729 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 [2020-10-29 10:09:15,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-10-29 10:09:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 516. [2020-10-29 10:09:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-29 10:09:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 632 transitions. [2020-10-29 10:09:15,788 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 632 transitions. Word has length 69 [2020-10-29 10:09:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:15,789 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 632 transitions. [2020-10-29 10:09:15,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:09:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 632 transitions. [2020-10-29 10:09:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 10:09:15,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:15,805 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] [2020-10-29 10:09:15,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 10:09:15,805 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:15,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:15,806 INFO L82 PathProgramCache]: Analyzing trace with hash 954196891, now seen corresponding path program 1 times [2020-10-29 10:09:15,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:15,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213458862] [2020-10-29 10:09:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:15,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:15,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:15,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-29 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 10:09:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 10:09:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:16,543 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:16,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:16,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:16,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:16,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:16,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:16,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:16,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:16,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:16,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:16,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:16,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:16,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:16,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:16,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:16,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:16,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:16,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:16,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:16,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 10:09:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:16,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:16,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:16,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 10:09:16,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:16,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 10:09:16,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:16,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:16,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:16,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:16,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:16,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:16,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:16,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:16,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:16,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:16,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:16,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:16,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:16,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:16,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:16,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 10:09:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:16,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:16,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:09:16,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:16,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 10:09:16,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:16,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:09:16,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:09:16,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:16,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213458862] [2020-10-29 10:09:16,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:16,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 10:09:16,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714440370] [2020-10-29 10:09:16,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:09:16,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:16,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:09:16,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:09:16,752 INFO L87 Difference]: Start difference. First operand 516 states and 632 transitions. Second operand 11 states. [2020-10-29 10:09:16,907 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 10:09:17,357 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:09:18,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:18,426 INFO L93 Difference]: Finished difference Result 839 states and 1031 transitions. [2020-10-29 10:09:18,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:09:18,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-10-29 10:09:18,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:18,429 INFO L225 Difference]: With dead ends: 839 [2020-10-29 10:09:18,429 INFO L226 Difference]: Without dead ends: 521 [2020-10-29 10:09:18,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:09:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-10-29 10:09:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 498. [2020-10-29 10:09:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-10-29 10:09:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 602 transitions. [2020-10-29 10:09:18,517 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 602 transitions. Word has length 82 [2020-10-29 10:09:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:18,518 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 602 transitions. [2020-10-29 10:09:18,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:09:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 602 transitions. [2020-10-29 10:09:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 10:09:18,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:18,519 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] [2020-10-29 10:09:18,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 10:09:18,519 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:18,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1462487580, now seen corresponding path program 1 times [2020-10-29 10:09:18,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:18,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755563604] [2020-10-29 10:09:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:18,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:18,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 10:09:18,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 10:09:18,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:18,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:18,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:09:18,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 10:09:18,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:09:18,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:18,980 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:18,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:18,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:18,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:18,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:19,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:19,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:19,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:19,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:19,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:19,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:19,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:19,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:19,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:19,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:19,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:19,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:19,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:19,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:19,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 10:09:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:09:19,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:19,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:19,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:19,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:19,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:19,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:19,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:19,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:19,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:19,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:19,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:19,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:19,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:19,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:19,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:19,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:19,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:19,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 10:09:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:19,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:19,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 10:09:19,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:19,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:09:19,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:19,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:19,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:19,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 10:09:19,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:19,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:19,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:19,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:19,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 10:09:19,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:19,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:19,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:19,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:19,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755563604] [2020-10-29 10:09:19,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:19,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 10:09:19,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297580964] [2020-10-29 10:09:19,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:09:19,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:19,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:09:19,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:09:19,258 INFO L87 Difference]: Start difference. First operand 498 states and 602 transitions. Second operand 14 states. [2020-10-29 10:09:20,321 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 10:09:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:21,040 INFO L93 Difference]: Finished difference Result 837 states and 1048 transitions. [2020-10-29 10:09:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 10:09:21,041 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-29 10:09:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:21,044 INFO L225 Difference]: With dead ends: 837 [2020-10-29 10:09:21,044 INFO L226 Difference]: Without dead ends: 582 [2020-10-29 10:09:21,045 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 [2020-10-29 10:09:21,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-29 10:09:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 462. [2020-10-29 10:09:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-29 10:09:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 556 transitions. [2020-10-29 10:09:21,126 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 556 transitions. Word has length 83 [2020-10-29 10:09:21,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:21,127 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 556 transitions. [2020-10-29 10:09:21,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:09:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 556 transitions. [2020-10-29 10:09:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 10:09:21,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:21,128 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] [2020-10-29 10:09:21,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 10:09:21,128 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash -68726557, now seen corresponding path program 1 times [2020-10-29 10:09:21,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:21,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626960140] [2020-10-29 10:09:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:21,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:23,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:23,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 10:09:23,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:09:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2455 [2020-10-29 10:09:23,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:23,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:09:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 10:09:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:09:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:23,745 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:23,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:23,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:23,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:23,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:23,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:23,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:23,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:23,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:23,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:23,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:23,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:23,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:23,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:23,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:23,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:23,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:09:23,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:23,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:23,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 10:09:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:09:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:24,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:24,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 10:09:24,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:24,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 10:09:24,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:24,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:24,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:09:24,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:09:24,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 10:09:24,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:24,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 10:09:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:24,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:24,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:24,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:09:24,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:09:24,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:24,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:09:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:24,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 10:09:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:24,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:24,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 10:09:24,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:24,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:09:24,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:24,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:09:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 10:09:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 10:09:24,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:24,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 10:09:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:24,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:24,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:09:24,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:09:24,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:24,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:24,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 10:09:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:24,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626960140] [2020-10-29 10:09:24,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:24,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 10:09:24,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105977549] [2020-10-29 10:09:24,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:09:24,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:24,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:09:24,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:09:24,238 INFO L87 Difference]: Start difference. First operand 462 states and 556 transitions. Second operand 12 states. [2020-10-29 10:09:24,395 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:09:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:26,640 INFO L93 Difference]: Finished difference Result 909 states and 1078 transitions. [2020-10-29 10:09:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:09:26,641 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-29 10:09:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:26,644 INFO L225 Difference]: With dead ends: 909 [2020-10-29 10:09:26,644 INFO L226 Difference]: Without dead ends: 609 [2020-10-29 10:09:26,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-10-29 10:09:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-10-29 10:09:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 583. [2020-10-29 10:09:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-10-29 10:09:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 691 transitions. [2020-10-29 10:09:26,712 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 691 transitions. Word has length 81 [2020-10-29 10:09:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:26,712 INFO L481 AbstractCegarLoop]: Abstraction has 583 states and 691 transitions. [2020-10-29 10:09:26,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:09:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 691 transitions. [2020-10-29 10:09:26,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 10:09:26,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:26,713 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] [2020-10-29 10:09:26,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 10:09:26,713 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:26,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:26,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1529848653, now seen corresponding path program 1 times [2020-10-29 10:09:26,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:26,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505443355] [2020-10-29 10:09:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:27,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:27,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 10:09:27,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:27,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-29 10:09:27,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:27,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:09:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 10:09:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 10:09:27,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:27,382 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:27,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:27,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:27,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:27,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:09:27,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:27,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:27,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:27,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:27,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:27,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:27,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:27,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:27,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:27,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:27,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:27,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:27,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:09:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:27,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:27,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:27,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 10:09:27,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 10:09:27,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:27,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:09:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 10:09:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 10:09:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:27,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:27,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:27,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:09:27,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:27,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:27,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:27,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 10:09:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:27,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:27,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 10:09:27,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:27,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:27,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:27,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 10:09:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:27,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:27,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 10:09:27,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:09:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:27,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 10:09:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:27,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505443355] [2020-10-29 10:09:27,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:27,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-29 10:09:27,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951415666] [2020-10-29 10:09:27,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:09:27,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:09:27,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:09:27,851 INFO L87 Difference]: Start difference. First operand 583 states and 691 transitions. Second operand 16 states. [2020-10-29 10:09:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:30,327 INFO L93 Difference]: Finished difference Result 588 states and 695 transitions. [2020-10-29 10:09:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 10:09:30,328 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-10-29 10:09:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:30,330 INFO L225 Difference]: With dead ends: 588 [2020-10-29 10:09:30,330 INFO L226 Difference]: Without dead ends: 499 [2020-10-29 10:09:30,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-29 10:09:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-29 10:09:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2020-10-29 10:09:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-10-29 10:09:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 590 transitions. [2020-10-29 10:09:30,388 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 590 transitions. Word has length 82 [2020-10-29 10:09:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:30,388 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 590 transitions. [2020-10-29 10:09:30,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:09:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 590 transitions. [2020-10-29 10:09:30,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 10:09:30,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:30,390 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] [2020-10-29 10:09:30,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 10:09:30,390 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:30,390 INFO L82 PathProgramCache]: Analyzing trace with hash 942010561, now seen corresponding path program 1 times [2020-10-29 10:09:30,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:30,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151052124] [2020-10-29 10:09:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:30,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 10:09:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:09:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-10-29 10:09:31,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:09:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 10:09:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 10:09:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,373 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:31,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:31,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:31,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:09:31,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:31,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:31,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:31,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:31,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:31,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:09:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:31,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 10:09:31,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:09:31,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 10:09:31,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:09:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 10:09:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:31,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:31,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:09:31,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:31,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:31,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:09:31,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:31,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:31,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:31,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:31,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:31,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:31,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 10:09:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:31,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:31,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:09:31,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:31,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:31,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:31,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:09:31,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:31,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151052124] [2020-10-29 10:09:31,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:31,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 10:09:31,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784121906] [2020-10-29 10:09:31,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:09:31,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:31,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:09:31,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:09:31,844 INFO L87 Difference]: Start difference. First operand 497 states and 590 transitions. Second operand 14 states. [2020-10-29 10:09:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:33,059 INFO L93 Difference]: Finished difference Result 521 states and 615 transitions. [2020-10-29 10:09:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 10:09:33,060 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-29 10:09:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:33,062 INFO L225 Difference]: With dead ends: 521 [2020-10-29 10:09:33,062 INFO L226 Difference]: Without dead ends: 499 [2020-10-29 10:09:33,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:09:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-29 10:09:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2020-10-29 10:09:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-10-29 10:09:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 589 transitions. [2020-10-29 10:09:33,119 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 589 transitions. Word has length 89 [2020-10-29 10:09:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:33,119 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 589 transitions. [2020-10-29 10:09:33,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:09:33,119 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 589 transitions. [2020-10-29 10:09:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 10:09:33,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:33,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:09:33,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 10:09:33,120 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1171955709, now seen corresponding path program 1 times [2020-10-29 10:09:33,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:33,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445417165] [2020-10-29 10:09:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:33,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:33,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 10:09:33,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:09:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-10-29 10:09:33,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:33,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:09:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 10:09:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 10:09:33,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:33,942 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:33,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:33,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:33,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:33,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:33,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:33,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:33,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:33,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:33,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:34,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:34,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:34,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:34,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:34,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:34,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:34,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:34,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:34,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:09:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:34,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:34,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 10:09:34,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:09:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-29 10:09:34,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:34,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:09:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 10:09:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:34,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:34,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:34,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:34,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 10:09:34,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:34,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:09:34,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:34,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:34,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:34,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:34,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:34,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:34,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:34,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:34,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:34,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:34,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:34,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:34,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:34,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:34,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:34,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:34,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:34,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:34,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:34,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 10:09:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:34,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:34,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 10:09:34,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:34,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:34,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:34,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:34,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 10:09:34,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:34,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 10:09:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:09:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:34,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445417165] [2020-10-29 10:09:34,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:34,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-29 10:09:34,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288105337] [2020-10-29 10:09:34,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:09:34,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:34,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:09:34,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:09:34,509 INFO L87 Difference]: Start difference. First operand 497 states and 589 transitions. Second operand 15 states. [2020-10-29 10:09:34,675 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 10:09:35,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:35,835 INFO L93 Difference]: Finished difference Result 523 states and 614 transitions. [2020-10-29 10:09:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 10:09:35,836 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-10-29 10:09:35,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:35,837 INFO L225 Difference]: With dead ends: 523 [2020-10-29 10:09:35,838 INFO L226 Difference]: Without dead ends: 473 [2020-10-29 10:09:35,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2020-10-29 10:09:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-10-29 10:09:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 420. [2020-10-29 10:09:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-29 10:09:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 491 transitions. [2020-10-29 10:09:35,905 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 491 transitions. Word has length 99 [2020-10-29 10:09:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:35,906 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 491 transitions. [2020-10-29 10:09:35,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:09:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 491 transitions. [2020-10-29 10:09:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 10:09:35,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:35,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:09:35,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 10:09:35,907 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:35,907 INFO L82 PathProgramCache]: Analyzing trace with hash -688305138, now seen corresponding path program 1 times [2020-10-29 10:09:35,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:35,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865460167] [2020-10-29 10:09:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:36,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:36,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 10:09:36,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-29 10:09:36,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:36,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:09:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 10:09:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:09:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:36,887 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:36,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:36,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:36,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:36,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:36,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:36,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:09:36,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:36,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:36,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:36,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:36,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:36,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:36,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:36,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:36,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:36,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:36,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:36,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:36,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:36,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:36,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:36,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:36,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:36,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:36,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 10:09:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:37,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 10:09:37,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:37,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 10:09:37,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:37,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:09:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 10:09:37,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 10:09:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:37,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 10:09:37,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 10:09:37,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:37,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 10:09:37,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:37,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-29 10:09:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:37,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:37,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:37,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:37,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:37,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:37,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:37,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:37,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:37,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:37,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:37,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:37,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:37,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:37,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:37,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:37,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 10:09:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:37,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 10:09:37,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:37,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:37,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:37,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 10:09:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:37,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:09:37,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:37,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:37,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:37,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:09:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:09:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:09:37,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865460167] [2020-10-29 10:09:37,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:37,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-29 10:09:37,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312613604] [2020-10-29 10:09:37,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 10:09:37,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:37,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 10:09:37,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:09:37,750 INFO L87 Difference]: Start difference. First operand 420 states and 491 transitions. Second operand 19 states. [2020-10-29 10:09:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:39,109 INFO L93 Difference]: Finished difference Result 563 states and 661 transitions. [2020-10-29 10:09:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 10:09:39,109 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 105 [2020-10-29 10:09:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:39,111 INFO L225 Difference]: With dead ends: 563 [2020-10-29 10:09:39,111 INFO L226 Difference]: Without dead ends: 439 [2020-10-29 10:09:39,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2020-10-29 10:09:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-29 10:09:39,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 429. [2020-10-29 10:09:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-29 10:09:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 497 transitions. [2020-10-29 10:09:39,176 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 497 transitions. Word has length 105 [2020-10-29 10:09:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:39,176 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 497 transitions. [2020-10-29 10:09:39,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 10:09:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 497 transitions. [2020-10-29 10:09:39,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 10:09:39,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:39,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:09:39,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 10:09:39,178 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:39,178 INFO L82 PathProgramCache]: Analyzing trace with hash 160134520, now seen corresponding path program 1 times [2020-10-29 10:09:39,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:39,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184157546] [2020-10-29 10:09:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:39,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:39,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:40,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 10:09:41,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 10:09:41,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-10-29 10:09:41,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:09:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 10:09:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:09:41,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,387 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:41,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:41,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:41,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:09:41,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:41,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:41,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:41,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:41,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:41,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:41,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 10:09:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:41,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:41,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:41,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:41,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:41,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 10:09:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 10:09:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 10:09:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-29 10:09:41,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:09:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 10:09:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:41,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 10:09:41,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:41,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:41,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:41,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:41,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:41,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:09:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:42,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:42,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:42,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:09:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 10:09:42,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:42,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:42,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:42,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:42,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:09:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:42,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:42,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:42,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:42,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:42,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:09:42,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:42,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:42,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:42,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:42,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:42,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:42,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:42,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:42,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:42,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:42,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:42,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:42,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:42,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:42,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:42,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:42,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 10:09:42,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184157546] [2020-10-29 10:09:42,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:42,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-29 10:09:42,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454146903] [2020-10-29 10:09:42,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 10:09:42,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:42,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 10:09:42,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:09:42,097 INFO L87 Difference]: Start difference. First operand 429 states and 497 transitions. Second operand 17 states. [2020-10-29 10:09:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:43,658 INFO L93 Difference]: Finished difference Result 775 states and 911 transitions. [2020-10-29 10:09:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 10:09:43,659 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 113 [2020-10-29 10:09:43,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:43,661 INFO L225 Difference]: With dead ends: 775 [2020-10-29 10:09:43,662 INFO L226 Difference]: Without dead ends: 478 [2020-10-29 10:09:43,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2020-10-29 10:09:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-10-29 10:09:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 439. [2020-10-29 10:09:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-29 10:09:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 507 transitions. [2020-10-29 10:09:43,717 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 507 transitions. Word has length 113 [2020-10-29 10:09:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:43,717 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 507 transitions. [2020-10-29 10:09:43,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 10:09:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 507 transitions. [2020-10-29 10:09:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 10:09:43,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:43,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:09:43,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 10:09:43,719 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:43,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:43,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1906294984, now seen corresponding path program 1 times [2020-10-29 10:09:43,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:43,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787448031] [2020-10-29 10:09:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:44,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:44,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:44,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 10:09:44,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:09:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1245 [2020-10-29 10:09:44,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:44,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:09:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-29 10:09:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 10:09:44,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,142 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 10:09:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:45,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:45,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:45,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:45,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 10:09:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:45,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:09:45,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:45,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:45,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:45,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:45,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:45,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:45,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 10:09:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 10:09:45,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:45,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:09:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 10:09:45,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 10:09:45,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:09:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:45,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:45,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:45,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:45,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:45,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 10:09:45,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787448031] [2020-10-29 10:09:45,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:45,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-29 10:09:45,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319276060] [2020-10-29 10:09:45,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 10:09:45,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:45,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 10:09:45,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:09:45,738 INFO L87 Difference]: Start difference. First operand 439 states and 507 transitions. Second operand 17 states. [2020-10-29 10:09:46,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:46,888 INFO L93 Difference]: Finished difference Result 468 states and 541 transitions. [2020-10-29 10:09:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 10:09:46,889 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 114 [2020-10-29 10:09:46,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:46,890 INFO L225 Difference]: With dead ends: 468 [2020-10-29 10:09:46,891 INFO L226 Difference]: Without dead ends: 458 [2020-10-29 10:09:46,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2020-10-29 10:09:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-29 10:09:46,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 439. [2020-10-29 10:09:46,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-29 10:09:46,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 506 transitions. [2020-10-29 10:09:46,946 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 506 transitions. Word has length 114 [2020-10-29 10:09:46,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:46,946 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 506 transitions. [2020-10-29 10:09:46,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 10:09:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 506 transitions. [2020-10-29 10:09:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 10:09:46,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:46,948 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:09:46,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 10:09:46,948 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:46,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:46,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1099837200, now seen corresponding path program 1 times [2020-10-29 10:09:46,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:46,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740986454] [2020-10-29 10:09:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:51,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:51,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 10:09:51,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 10:09:51,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4974 [2020-10-29 10:09:51,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:51,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:09:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-29 10:09:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 10:09:51,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,096 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:52,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:52,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:52,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:52,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:52,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:52,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 10:09:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:52,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:09:52,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:52,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:52,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:52,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:52,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 10:09:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 10:09:52,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:09:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-29 10:09:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:09:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 10:09:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 10:09:52,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:52,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:09:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 10:09:52,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 10:09:52,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:09:52,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:52,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:52,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:52,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:52,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:52,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:52,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:52,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-29 10:09:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 10:09:52,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740986454] [2020-10-29 10:09:52,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:52,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-29 10:09:52,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269843064] [2020-10-29 10:09:52,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 10:09:52,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:52,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 10:09:52,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:09:52,719 INFO L87 Difference]: Start difference. First operand 439 states and 506 transitions. Second operand 17 states. [2020-10-29 10:09:53,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:53,904 INFO L93 Difference]: Finished difference Result 771 states and 898 transitions. [2020-10-29 10:09:53,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 10:09:53,905 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 123 [2020-10-29 10:09:53,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:53,907 INFO L225 Difference]: With dead ends: 771 [2020-10-29 10:09:53,907 INFO L226 Difference]: Without dead ends: 462 [2020-10-29 10:09:53,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2020-10-29 10:09:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-29 10:09:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 446. [2020-10-29 10:09:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-29 10:09:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 510 transitions. [2020-10-29 10:09:53,986 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 510 transitions. Word has length 123 [2020-10-29 10:09:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:53,986 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 510 transitions. [2020-10-29 10:09:53,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 10:09:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 510 transitions. [2020-10-29 10:09:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 10:09:53,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:53,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:09:53,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 10:09:53,988 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:53,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:53,988 INFO L82 PathProgramCache]: Analyzing trace with hash -375605072, now seen corresponding path program 1 times [2020-10-29 10:09:53,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:53,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317641681] [2020-10-29 10:09:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:54,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:54,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 10:09:56,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 10:09:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2317 [2020-10-29 10:09:56,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:09:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-29 10:09:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:09:56,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,464 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 10:09:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:09:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:56,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:09:56,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 10:09:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:56,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:56,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 10:09:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:56,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:56,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 10:09:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 10:09:56,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:09:56,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:56,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:56,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:56,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:56,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:56,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 10:09:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 10:09:56,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:09:56,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 10:09:56,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:09:56,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 10:09:56,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:09:56,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 10:09:56,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:56,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:09:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 10:09:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:09:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 10:09:56,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:09:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 10:09:56,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 10:09:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 10:09:56,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:09:56,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 10:09:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:56,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 10:09:56,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 10:09:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:56,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:09:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-29 10:09:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:56,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:56,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:09:56,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:09:56,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:09:56,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 10:09:56,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:09:56,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:09:56,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:09:56,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 10:09:56,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:09:56,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:09:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 10:09:56,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317641681] [2020-10-29 10:09:56,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:09:56,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 10:09:56,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427535434] [2020-10-29 10:09:56,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 10:09:56,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:09:56,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 10:09:56,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-29 10:09:56,963 INFO L87 Difference]: Start difference. First operand 446 states and 510 transitions. Second operand 14 states. [2020-10-29 10:09:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:09:57,897 INFO L93 Difference]: Finished difference Result 482 states and 545 transitions. [2020-10-29 10:09:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 10:09:57,898 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-10-29 10:09:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:09:57,899 INFO L225 Difference]: With dead ends: 482 [2020-10-29 10:09:57,899 INFO L226 Difference]: Without dead ends: 396 [2020-10-29 10:09:57,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 10:09:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-29 10:09:57,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 254. [2020-10-29 10:09:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-29 10:09:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 280 transitions. [2020-10-29 10:09:57,931 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 280 transitions. Word has length 123 [2020-10-29 10:09:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:09:57,932 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 280 transitions. [2020-10-29 10:09:57,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 10:09:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 280 transitions. [2020-10-29 10:09:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 10:09:57,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:09:57,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:09:57,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 10:09:57,933 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:09:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:09:57,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1896945389, now seen corresponding path program 1 times [2020-10-29 10:09:57,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:09:57,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043845072] [2020-10-29 10:09:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:09:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:09:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:58,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:09:58,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking...