/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/eca-rers2012/Problem03_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:51:21,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:51:21,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:51:21,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:51:21,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:51:21,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:51:21,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:51:21,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:51:21,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:51:21,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:51:21,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:51:21,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:51:21,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:51:21,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:51:21,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:51:21,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:51:21,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:51:21,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:51:21,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:51:21,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:51:21,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:51:21,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:51:21,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:51:21,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:51:21,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:51:21,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:51:21,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:51:21,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:51:21,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:51:21,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:51:21,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:51:21,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:51:21,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:51:21,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:51:21,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:51:21,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:51:21,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:51:21,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:51:21,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:51:21,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:51:21,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:51:21,976 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 04:51:22,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:51:22,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:51:22,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:51:22,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:51:22,038 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:51:22,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:51:22,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:51:22,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:51:22,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:51:22,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:51:22,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:51:22,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:51:22,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:51:22,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:51:22,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:51:22,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:51:22,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:51:22,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:51:22,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:51:22,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:51:22,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:51:22,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:51:22,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:51:22,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:51:22,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:51:22,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:51:22,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:51:22,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:51:22,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:51:22,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:51:22,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:51:22,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:51:22,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:51:22,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:51:22,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:51:22,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label03.c [2020-10-29 04:51:22,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41980b88f/75a96af4292b4b02a02e5fb7811b9140/FLAG3fd081ef0 [2020-10-29 04:51:23,424 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:51:23,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label03.c [2020-10-29 04:51:23,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41980b88f/75a96af4292b4b02a02e5fb7811b9140/FLAG3fd081ef0 [2020-10-29 04:51:23,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41980b88f/75a96af4292b4b02a02e5fb7811b9140 [2020-10-29 04:51:23,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:51:23,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:51:23,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:51:23,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:51:23,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:51:23,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:23" (1/1) ... [2020-10-29 04:51:23,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188d3348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:23, skipping insertion in model container [2020-10-29 04:51:23,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:23" (1/1) ... [2020-10-29 04:51:23,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:51:23,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:51:24,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:51:24,421 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:51:24,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:51:24,783 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:51:24,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24 WrapperNode [2020-10-29 04:51:24,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:51:24,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:51:24,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:51:24,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:51:24,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24" (1/1) ... [2020-10-29 04:51:24,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24" (1/1) ... [2020-10-29 04:51:24,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24" (1/1) ... [2020-10-29 04:51:24,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24" (1/1) ... [2020-10-29 04:51:24,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24" (1/1) ... [2020-10-29 04:51:24,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24" (1/1) ... [2020-10-29 04:51:24,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24" (1/1) ... [2020-10-29 04:51:24,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:51:24,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:51:24,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:51:24,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:51:24,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24" (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 04:51:25,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:51:25,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:51:25,053 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:51:25,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:51:25,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:51:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:51:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:51:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:51:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:51:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:51:25,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:51:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:51:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:51:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:51:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:51:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:51:25,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:51:25,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:51:25,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:51:28,304 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:51:28,304 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:51:28,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:51:28 BoogieIcfgContainer [2020-10-29 04:51:28,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:51:28,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:51:28,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:51:28,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:51:28,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:51:23" (1/3) ... [2020-10-29 04:51:28,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bea876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:51:28, skipping insertion in model container [2020-10-29 04:51:28,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:24" (2/3) ... [2020-10-29 04:51:28,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bea876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:51:28, skipping insertion in model container [2020-10-29 04:51:28,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:51:28" (3/3) ... [2020-10-29 04:51:28,317 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label03.c [2020-10-29 04:51:28,330 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:51:28,337 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:51:28,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:51:28,384 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:51:28,385 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:51:28,385 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:51:28,385 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:51:28,385 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:51:28,385 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:51:28,385 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:51:28,386 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:51:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:51:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-29 04:51:28,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:28,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:51:28,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:28,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:28,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1454632148, now seen corresponding path program 1 times [2020-10-29 04:51:28,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:28,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912013239] [2020-10-29 04:51:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:33,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:33,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 04:51:33,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:51:33,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4631 [2020-10-29 04:51:33,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:33,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:51:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:51:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 04:51:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:51:34,214 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:51:34,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:51:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:34,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:34,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:34,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:51:34,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:34,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 04:51:34,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:34,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:34,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:51:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:51:34,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:51:34,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912013239] [2020-10-29 04:51:34,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:51:34,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:51:34,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500135257] [2020-10-29 04:51:34,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:51:34,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:51:34,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:51:34,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:51:34,419 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:51:34,721 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:51:38,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:51:38,479 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-29 04:51:38,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:51:38,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-29 04:51:38,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:51:38,520 INFO L225 Difference]: With dead ends: 889 [2020-10-29 04:51:38,520 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 04:51:38,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:51:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 04:51:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-29 04:51:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-29 04:51:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-29 04:51:38,694 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 171 [2020-10-29 04:51:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:51:38,696 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-29 04:51:38,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:51:38,696 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-29 04:51:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-29 04:51:38,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:38,705 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:38,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:51:38,706 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:38,706 INFO L82 PathProgramCache]: Analyzing trace with hash -744610301, now seen corresponding path program 1 times [2020-10-29 04:51:38,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:38,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701004924] [2020-10-29 04:51:38,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:42,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:42,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 04:51:42,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:51:42,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4093 [2020-10-29 04:51:42,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:42,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:51:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:51:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 04:51:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:43,288 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:51:43,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:51:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:43,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:43,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:51:43,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:51:43,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:43,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:51:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:43,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:51:43,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:43,458 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:51:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:51:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:43,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:43,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:43,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:51:43,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:43,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:51:43,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:43,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:43,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:51:43,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:43,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:51:43,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:51:43,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701004924] [2020-10-29 04:51:43,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:51:43,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:51:43,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660470281] [2020-10-29 04:51:43,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:51:43,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:51:43,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:51:43,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:51:43,600 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 6 states. [2020-10-29 04:51:43,939 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:51:44,902 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:51:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:51:48,482 INFO L93 Difference]: Finished difference Result 1833 states and 2877 transitions. [2020-10-29 04:51:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:51:48,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2020-10-29 04:51:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:51:48,494 INFO L225 Difference]: With dead ends: 1833 [2020-10-29 04:51:48,494 INFO L226 Difference]: Without dead ends: 1363 [2020-10-29 04:51:48,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:51:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-10-29 04:51:48,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1323. [2020-10-29 04:51:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-10-29 04:51:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 2007 transitions. [2020-10-29 04:51:48,572 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 2007 transitions. Word has length 180 [2020-10-29 04:51:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:51:48,573 INFO L481 AbstractCegarLoop]: Abstraction has 1323 states and 2007 transitions. [2020-10-29 04:51:48,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:51:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 2007 transitions. [2020-10-29 04:51:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 04:51:48,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:48,580 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:48,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:51:48,580 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:48,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1528349419, now seen corresponding path program 1 times [2020-10-29 04:51:48,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:48,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873740369] [2020-10-29 04:51:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:49,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:50,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:50,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-29 04:51:50,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:51:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2185 [2020-10-29 04:51:50,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:50,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:51:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:51:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 04:51:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:51,175 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:51:51,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:51:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:51,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:51,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:51:51,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:51:51,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:51,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:51:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:51,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:51:51,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:51,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:51:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:51,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:51,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:51:51,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:51:51,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:51,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:51:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:51:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:51:51,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873740369] [2020-10-29 04:51:51,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:51:51,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:51:51,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509126459] [2020-10-29 04:51:51,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:51:51,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:51:51,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:51:51,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:51:51,415 INFO L87 Difference]: Start difference. First operand 1323 states and 2007 transitions. Second operand 5 states. [2020-10-29 04:51:51,770 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:51:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:51:55,039 INFO L93 Difference]: Finished difference Result 3909 states and 6045 transitions. [2020-10-29 04:51:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:51:55,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-29 04:51:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:51:55,058 INFO L225 Difference]: With dead ends: 3909 [2020-10-29 04:51:55,058 INFO L226 Difference]: Without dead ends: 2592 [2020-10-29 04:51:55,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:51:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2020-10-29 04:51:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2581. [2020-10-29 04:51:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2581 states. [2020-10-29 04:51:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 3820 transitions. [2020-10-29 04:51:55,168 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 3820 transitions. Word has length 183 [2020-10-29 04:51:55,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:51:55,169 INFO L481 AbstractCegarLoop]: Abstraction has 2581 states and 3820 transitions. [2020-10-29 04:51:55,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:51:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 3820 transitions. [2020-10-29 04:51:55,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 04:51:55,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:55,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:55,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:51:55,178 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:55,179 INFO L82 PathProgramCache]: Analyzing trace with hash 268810967, now seen corresponding path program 1 times [2020-10-29 04:51:55,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:55,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356001630] [2020-10-29 04:51:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:55,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:55,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:55,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:56,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:00,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:00,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 04:52:00,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:52:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-29 04:52:00,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:00,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:52:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 04:52:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:00,665 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:00,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:00,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:00,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:00,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:52:00,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:00,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 04:52:00,838 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:00,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:00,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:00,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:00,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:52:00,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:00,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:52:00,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:00,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:00,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:52:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:00,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:00,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:00,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:52:00,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:00,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 04:52:00,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:00,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:00,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:52:00,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:52:01,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356001630] [2020-10-29 04:52:01,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:01,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:01,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384208175] [2020-10-29 04:52:01,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:01,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:01,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:01,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:01,084 INFO L87 Difference]: Start difference. First operand 2581 states and 3820 transitions. Second operand 5 states. [2020-10-29 04:52:01,559 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:04,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:04,510 INFO L93 Difference]: Finished difference Result 6838 states and 10196 transitions. [2020-10-29 04:52:04,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:04,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-29 04:52:04,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:04,529 INFO L225 Difference]: With dead ends: 6838 [2020-10-29 04:52:04,529 INFO L226 Difference]: Without dead ends: 2584 [2020-10-29 04:52:04,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2020-10-29 04:52:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2580. [2020-10-29 04:52:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2580 states. [2020-10-29 04:52:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3818 transitions. [2020-10-29 04:52:04,634 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3818 transitions. Word has length 190 [2020-10-29 04:52:04,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:04,635 INFO L481 AbstractCegarLoop]: Abstraction has 2580 states and 3818 transitions. [2020-10-29 04:52:04,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:04,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3818 transitions. [2020-10-29 04:52:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 04:52:04,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:04,643 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:04,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:52:04,643 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:04,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:04,644 INFO L82 PathProgramCache]: Analyzing trace with hash 783823575, now seen corresponding path program 1 times [2020-10-29 04:52:04,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:04,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94538244] [2020-10-29 04:52:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:04,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:05,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:06,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:06,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 04:52:06,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:52:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2264 [2020-10-29 04:52:06,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:06,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 04:52:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 04:52:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:07,341 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:07,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:07,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:07,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:52:07,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:07,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:07,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:52:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:07,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:07,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:07,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:52:07,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:07,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 04:52:07,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:07,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:07,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:07,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:52:07,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:07,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94538244] [2020-10-29 04:52:07,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:07,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:07,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930249445] [2020-10-29 04:52:07,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:07,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:07,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:07,613 INFO L87 Difference]: Start difference. First operand 2580 states and 3818 transitions. Second operand 5 states. [2020-10-29 04:52:07,992 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:11,571 INFO L93 Difference]: Finished difference Result 7460 states and 11317 transitions. [2020-10-29 04:52:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:11,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-29 04:52:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:11,603 INFO L225 Difference]: With dead ends: 7460 [2020-10-29 04:52:11,603 INFO L226 Difference]: Without dead ends: 4886 [2020-10-29 04:52:11,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2020-10-29 04:52:11,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4879. [2020-10-29 04:52:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2020-10-29 04:52:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 7234 transitions. [2020-10-29 04:52:11,819 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 7234 transitions. Word has length 190 [2020-10-29 04:52:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:11,820 INFO L481 AbstractCegarLoop]: Abstraction has 4879 states and 7234 transitions. [2020-10-29 04:52:11,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 7234 transitions. [2020-10-29 04:52:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 04:52:11,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:11,836 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:11,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:52:11,836 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash 935560684, now seen corresponding path program 1 times [2020-10-29 04:52:11,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:11,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152861081] [2020-10-29 04:52:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:11,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:11,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:13,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:16,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:16,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-29 04:52:16,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:52:16,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 04:52:16,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:16,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 04:52:16,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 04:52:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:17,270 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:17,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:17,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:17,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:17,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:17,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:17,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:17,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:17,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:17,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:52:17,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:17,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:52:17,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:17,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:17,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:17,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:52:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:17,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:17,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 04:52:17,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 04:52:17,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:17,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:52:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:52:17,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152861081] [2020-10-29 04:52:17,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:17,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:17,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222972196] [2020-10-29 04:52:17,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:17,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:17,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:17,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:17,594 INFO L87 Difference]: Start difference. First operand 4879 states and 7234 transitions. Second operand 5 states. [2020-10-29 04:52:17,834 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:20,769 INFO L93 Difference]: Finished difference Result 13118 states and 20047 transitions. [2020-10-29 04:52:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:20,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-29 04:52:20,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:20,819 INFO L225 Difference]: With dead ends: 13118 [2020-10-29 04:52:20,819 INFO L226 Difference]: Without dead ends: 8245 [2020-10-29 04:52:20,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8245 states. [2020-10-29 04:52:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8245 to 8238. [2020-10-29 04:52:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8238 states. [2020-10-29 04:52:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8238 states to 8238 states and 11986 transitions. [2020-10-29 04:52:21,101 INFO L78 Accepts]: Start accepts. Automaton has 8238 states and 11986 transitions. Word has length 217 [2020-10-29 04:52:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:21,102 INFO L481 AbstractCegarLoop]: Abstraction has 8238 states and 11986 transitions. [2020-10-29 04:52:21,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8238 states and 11986 transitions. [2020-10-29 04:52:21,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 04:52:21,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:21,128 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:21,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:52:21,129 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash 629554798, now seen corresponding path program 1 times [2020-10-29 04:52:21,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:21,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781463852] [2020-10-29 04:52:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:21,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:21,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:26,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 04:52:26,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:52:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 04:52:26,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:26,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:52:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 04:52:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 04:52:26,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:26,644 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:26,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:26,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:52:26,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:26,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:26,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:52:26,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:52:26,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:26,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:26,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:26,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:52:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:26,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 04:52:26,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:26,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:52:26,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:26,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:52:26,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:26,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:52:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:26,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:26,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:52:26,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 04:52:26,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:26,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:52:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:52:27,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781463852] [2020-10-29 04:52:27,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:27,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:52:27,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516203266] [2020-10-29 04:52:27,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:52:27,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:27,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:52:27,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:27,058 INFO L87 Difference]: Start difference. First operand 8238 states and 11986 transitions. Second operand 6 states. [2020-10-29 04:52:27,334 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:31,113 INFO L93 Difference]: Finished difference Result 19742 states and 29772 transitions. [2020-10-29 04:52:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:52:31,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2020-10-29 04:52:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:31,203 INFO L225 Difference]: With dead ends: 19742 [2020-10-29 04:52:31,203 INFO L226 Difference]: Without dead ends: 11510 [2020-10-29 04:52:31,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:52:31,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-10-29 04:52:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 11440. [2020-10-29 04:52:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11440 states. [2020-10-29 04:52:31,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11440 states to 11440 states and 16763 transitions. [2020-10-29 04:52:31,705 INFO L78 Accepts]: Start accepts. Automaton has 11440 states and 16763 transitions. Word has length 238 [2020-10-29 04:52:31,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:31,706 INFO L481 AbstractCegarLoop]: Abstraction has 11440 states and 16763 transitions. [2020-10-29 04:52:31,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:52:31,707 INFO L276 IsEmpty]: Start isEmpty. Operand 11440 states and 16763 transitions. [2020-10-29 04:52:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 04:52:31,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:31,748 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:31,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:52:31,748 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:31,749 INFO L82 PathProgramCache]: Analyzing trace with hash -877260356, now seen corresponding path program 1 times [2020-10-29 04:52:31,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:31,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222761634] [2020-10-29 04:52:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:31,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:36,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:36,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 04:52:36,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:52:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 04:52:36,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:36,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:52:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:52:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 04:52:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:37,094 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:37,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:37,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:37,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:37,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:52:37,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:37,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:37,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:37,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:37,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:37,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:52:37,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:52:37,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:37,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:37,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:52:37,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:37,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:52:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:37,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:37,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:52:37,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:37,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 04:52:37,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:37,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:37,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:52:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:52:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:37,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:37,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:52:37,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 04:52:37,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:37,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:37,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:52:37,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 75 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:52:37,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222761634] [2020-10-29 04:52:37,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:37,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:52:37,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863806645] [2020-10-29 04:52:37,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:52:37,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:37,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:52:37,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:52:37,742 INFO L87 Difference]: Start difference. First operand 11440 states and 16763 transitions. Second operand 8 states. [2020-10-29 04:52:38,157 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:52:38,415 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:43,787 INFO L93 Difference]: Finished difference Result 27214 states and 42009 transitions. [2020-10-29 04:52:43,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:52:43,793 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2020-10-29 04:52:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:43,878 INFO L225 Difference]: With dead ends: 27214 [2020-10-29 04:52:43,878 INFO L226 Difference]: Without dead ends: 15780 [2020-10-29 04:52:43,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:52:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15780 states. [2020-10-29 04:52:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15780 to 15560. [2020-10-29 04:52:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15560 states. [2020-10-29 04:52:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15560 states to 15560 states and 21935 transitions. [2020-10-29 04:52:44,503 INFO L78 Accepts]: Start accepts. Automaton has 15560 states and 21935 transitions. Word has length 239 [2020-10-29 04:52:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:44,504 INFO L481 AbstractCegarLoop]: Abstraction has 15560 states and 21935 transitions. [2020-10-29 04:52:44,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:52:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15560 states and 21935 transitions. [2020-10-29 04:52:44,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 04:52:44,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:44,555 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:44,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:52:44,555 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:44,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:44,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1590015021, now seen corresponding path program 1 times [2020-10-29 04:52:44,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:44,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557838765] [2020-10-29 04:52:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:44,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:45,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:45,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 04:52:45,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-10-29 04:52:45,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:45,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:52:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:52:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 04:52:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:45,804 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:45,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:45,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:45,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:45,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:52:45,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:45,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:45,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:52:45,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:46,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:46,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:52:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 04:52:46,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:46,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 04:52:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:46,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557838765] [2020-10-29 04:52:46,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:52:46,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:52:46,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885938662] [2020-10-29 04:52:46,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:52:46,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:46,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:52:46,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:52:46,241 INFO L87 Difference]: Start difference. First operand 15560 states and 21935 transitions. Second operand 7 states. [2020-10-29 04:52:46,503 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:46,857 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:50,426 INFO L93 Difference]: Finished difference Result 36503 states and 52174 transitions. [2020-10-29 04:52:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:52:50,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-29 04:52:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:50,505 INFO L225 Difference]: With dead ends: 36503 [2020-10-29 04:52:50,505 INFO L226 Difference]: Without dead ends: 20949 [2020-10-29 04:52:50,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:52:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20949 states. [2020-10-29 04:52:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20949 to 20728. [2020-10-29 04:52:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20728 states. [2020-10-29 04:52:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20728 states to 20728 states and 27460 transitions. [2020-10-29 04:52:51,160 INFO L78 Accepts]: Start accepts. Automaton has 20728 states and 27460 transitions. Word has length 239 [2020-10-29 04:52:51,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:51,160 INFO L481 AbstractCegarLoop]: Abstraction has 20728 states and 27460 transitions. [2020-10-29 04:52:51,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:52:51,161 INFO L276 IsEmpty]: Start isEmpty. Operand 20728 states and 27460 transitions. [2020-10-29 04:52:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-29 04:52:51,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:51,210 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:51,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:52:51,210 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:51,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:51,211 INFO L82 PathProgramCache]: Analyzing trace with hash 882409904, now seen corresponding path program 1 times [2020-10-29 04:52:51,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:51,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860885937] [2020-10-29 04:52:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:56,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:56,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 04:52:56,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:52:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 04:52:56,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:56,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:52:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:52:56,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 04:52:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:56,577 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:56,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:56,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:56,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:52:56,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:56,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:56,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:56,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:56,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:52:56,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:52:56,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:56,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:52:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:56,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:52:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:56,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:56,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:56,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:52:56,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 04:52:56,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:56,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:52:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:52:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:56,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:56,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:52:56,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 04:52:56,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:56,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:52:56,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:56,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:52:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:57,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:57,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:57,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:52:57,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:57,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 04:52:57,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:57,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:57,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:52:57,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 94 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 04:52:57,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860885937] [2020-10-29 04:52:57,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:57,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:52:57,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894450439] [2020-10-29 04:52:57,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:52:57,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:57,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:52:57,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:52:57,293 INFO L87 Difference]: Start difference. First operand 20728 states and 27460 transitions. Second operand 8 states. [2020-10-29 04:52:57,685 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:52:58,121 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:53:02,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:02,620 INFO L93 Difference]: Finished difference Result 42427 states and 65016 transitions. [2020-10-29 04:53:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:53:02,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2020-10-29 04:53:02,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:02,776 INFO L225 Difference]: With dead ends: 42427 [2020-10-29 04:53:02,777 INFO L226 Difference]: Without dead ends: 26354 [2020-10-29 04:53:02,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:53:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26354 states. [2020-10-29 04:53:03,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26354 to 25218. [2020-10-29 04:53:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25218 states. [2020-10-29 04:53:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25218 states to 25218 states and 32909 transitions. [2020-10-29 04:53:03,777 INFO L78 Accepts]: Start accepts. Automaton has 25218 states and 32909 transitions. Word has length 244 [2020-10-29 04:53:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:03,777 INFO L481 AbstractCegarLoop]: Abstraction has 25218 states and 32909 transitions. [2020-10-29 04:53:03,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:53:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 25218 states and 32909 transitions. [2020-10-29 04:53:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 04:53:03,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:03,817 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:03,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:53:03,818 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:03,818 INFO L82 PathProgramCache]: Analyzing trace with hash -148978710, now seen corresponding path program 1 times [2020-10-29 04:53:03,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:03,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348735044] [2020-10-29 04:53:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:08,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:08,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-29 04:53:08,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:53:08,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 04:53:08,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:08,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:08,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:53:08,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:53:08,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 04:53:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:09,197 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:09,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:09,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:09,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:09,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:53:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:09,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:53:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:09,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:09,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:09,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:09,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:53:09,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:09,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 04:53:09,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:09,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:09,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:53:09,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:09,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:53:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:09,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:09,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:09,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:53:09,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:53:09,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:09,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:53:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:53:09,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:09,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:53:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:09,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:09,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:53:09,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 04:53:09,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:09,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:53:09,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:09,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:53:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:09,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:09,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:09,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:53:09,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 04:53:09,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:09,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:09,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:53:09,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 89 proven. 49 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:53:10,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348735044] [2020-10-29 04:53:10,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:10,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:53:10,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215223255] [2020-10-29 04:53:10,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:53:10,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:10,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:53:10,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:10,216 INFO L87 Difference]: Start difference. First operand 25218 states and 32909 transitions. Second operand 12 states. [2020-10-29 04:53:10,842 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 162 [2020-10-29 04:53:11,319 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:53:11,853 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:53:16,824 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-29 04:53:18,141 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:53:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:20,509 INFO L93 Difference]: Finished difference Result 85648 states and 120107 transitions. [2020-10-29 04:53:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 04:53:20,510 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 253 [2020-10-29 04:53:20,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:20,840 INFO L225 Difference]: With dead ends: 85648 [2020-10-29 04:53:20,840 INFO L226 Difference]: Without dead ends: 60651 [2020-10-29 04:53:20,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:53:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60651 states. [2020-10-29 04:53:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60651 to 57995. [2020-10-29 04:53:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57995 states. [2020-10-29 04:53:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57995 states to 57995 states and 75006 transitions. [2020-10-29 04:53:22,992 INFO L78 Accepts]: Start accepts. Automaton has 57995 states and 75006 transitions. Word has length 253 [2020-10-29 04:53:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:22,992 INFO L481 AbstractCegarLoop]: Abstraction has 57995 states and 75006 transitions. [2020-10-29 04:53:22,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:53:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand 57995 states and 75006 transitions. [2020-10-29 04:53:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 04:53:23,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:23,071 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:53:23,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:53:23,071 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:23,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:23,072 INFO L82 PathProgramCache]: Analyzing trace with hash -565808999, now seen corresponding path program 1 times [2020-10-29 04:53:23,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:23,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046345305] [2020-10-29 04:53:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:23,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:23,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:24,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:28,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:28,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 04:53:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:53:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 04:53:28,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:28,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-29 04:53:28,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:53:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:28,820 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:28,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:28,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:28,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:28,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:28,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:53:28,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:28,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:28,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:28,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:28,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:28,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:28,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:28,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:53:28,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:53:28,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:28,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:28,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:53:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:28,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:28,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:53:28,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:28,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:53:28,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:28,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:28,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:53:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:28,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:29,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:29,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:53:29,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:29,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 04:53:29,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:29,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:53:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:29,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 04:53:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:29,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:29,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:29,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:53:29,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:29,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 04:53:29,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:29,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:53:29,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-29 04:53:29,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046345305] [2020-10-29 04:53:29,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:29,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:29,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877868110] [2020-10-29 04:53:29,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:29,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:29,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:29,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:29,234 INFO L87 Difference]: Start difference. First operand 57995 states and 75006 transitions. Second operand 7 states. [2020-10-29 04:53:29,631 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:30,128 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:38,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:38,683 INFO L93 Difference]: Finished difference Result 214757 states and 299985 transitions. [2020-10-29 04:53:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:53:38,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-29 04:53:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:39,817 INFO L225 Difference]: With dead ends: 214757 [2020-10-29 04:53:39,817 INFO L226 Difference]: Without dead ends: 156983 [2020-10-29 04:53:39,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156983 states. [2020-10-29 04:53:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156983 to 156718. [2020-10-29 04:53:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156718 states. [2020-10-29 04:53:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156718 states to 156718 states and 220226 transitions. [2020-10-29 04:53:45,428 INFO L78 Accepts]: Start accepts. Automaton has 156718 states and 220226 transitions. Word has length 256 [2020-10-29 04:53:45,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:45,428 INFO L481 AbstractCegarLoop]: Abstraction has 156718 states and 220226 transitions. [2020-10-29 04:53:45,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 156718 states and 220226 transitions. [2020-10-29 04:53:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-29 04:53:45,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:45,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 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 04:53:45,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:53:45,698 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:45,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1345678178, now seen corresponding path program 1 times [2020-10-29 04:53:45,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:45,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123514814] [2020-10-29 04:53:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:45,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:46,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:47,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:47,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-29 04:53:47,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:53:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1937 [2020-10-29 04:53:47,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:47,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 04:53:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 04:53:47,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,005 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:48,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:48,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:48,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:48,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:48,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:53:48,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:48,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:48,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:48,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:53:48,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:53:48,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:48,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:53:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:48,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 04:53:48,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 04:53:48,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:48,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 04:53:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 04:53:48,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123514814] [2020-10-29 04:53:48,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:48,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:53:48,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617249380] [2020-10-29 04:53:48,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:53:48,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:48,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:53:48,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:53:48,380 INFO L87 Difference]: Start difference. First operand 156718 states and 220226 transitions. Second operand 5 states. [2020-10-29 04:53:48,638 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:57,021 INFO L93 Difference]: Finished difference Result 377562 states and 534785 transitions. [2020-10-29 04:53:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:57,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 278 [2020-10-29 04:53:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:58,033 INFO L225 Difference]: With dead ends: 377562 [2020-10-29 04:53:58,033 INFO L226 Difference]: Without dead ends: 225971 [2020-10-29 04:53:58,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:58,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225971 states. [2020-10-29 04:54:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225971 to 220250. [2020-10-29 04:54:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220250 states. [2020-10-29 04:54:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220250 states to 220250 states and 311331 transitions. [2020-10-29 04:54:06,285 INFO L78 Accepts]: Start accepts. Automaton has 220250 states and 311331 transitions. Word has length 278 [2020-10-29 04:54:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:06,286 INFO L481 AbstractCegarLoop]: Abstraction has 220250 states and 311331 transitions. [2020-10-29 04:54:06,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:54:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 220250 states and 311331 transitions. [2020-10-29 04:54:07,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-29 04:54:07,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:07,191 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:07,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:54:07,192 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:07,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1401980761, now seen corresponding path program 1 times [2020-10-29 04:54:07,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:07,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419963726] [2020-10-29 04:54:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:07,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-29 04:54:12,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:54:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4816 [2020-10-29 04:54:12,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:54:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:54:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 04:54:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,399 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:12,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:54:12,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:12,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:54:12,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:54:12,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:54:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:54:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:54:12,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:12,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:54:12,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:54:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:54:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:54:12,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 04:54:12,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:12,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:54:12,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:12,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:54:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:54:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-29 04:54:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:12,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 04:54:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 157 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 04:54:13,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419963726] [2020-10-29 04:54:13,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:13,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:54:13,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243714464] [2020-10-29 04:54:13,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:54:13,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:13,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:54:13,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:54:13,126 INFO L87 Difference]: Start difference. First operand 220250 states and 311331 transitions. Second operand 9 states. [2020-10-29 04:54:13,439 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:54:13,800 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:14,805 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:24,248 INFO L93 Difference]: Finished difference Result 436689 states and 618822 transitions. [2020-10-29 04:54:24,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:54:24,249 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2020-10-29 04:54:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:25,296 INFO L225 Difference]: With dead ends: 436689 [2020-10-29 04:54:25,296 INFO L226 Difference]: Without dead ends: 217705 [2020-10-29 04:54:25,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:54:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217705 states. [2020-10-29 04:54:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217705 to 211792. [2020-10-29 04:54:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211792 states. [2020-10-29 04:54:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211792 states to 211792 states and 277482 transitions. [2020-10-29 04:54:33,149 INFO L78 Accepts]: Start accepts. Automaton has 211792 states and 277482 transitions. Word has length 289 [2020-10-29 04:54:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:33,150 INFO L481 AbstractCegarLoop]: Abstraction has 211792 states and 277482 transitions. [2020-10-29 04:54:33,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:54:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 211792 states and 277482 transitions. [2020-10-29 04:54:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-29 04:54:33,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:33,466 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:54:33,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:54:33,467 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:33,467 INFO L82 PathProgramCache]: Analyzing trace with hash 621529224, now seen corresponding path program 1 times [2020-10-29 04:54:33,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:33,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145183200] [2020-10-29 04:54:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:33,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking...