/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:56:17,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:56:17,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:56:17,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:56:17,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:56:17,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:56:17,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:56:17,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:56:17,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:56:17,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:56:17,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:56:17,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:56:17,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:56:17,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:56:17,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:56:17,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:56:17,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:56:18,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:56:18,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:56:18,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:56:18,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:56:18,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:56:18,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:56:18,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:56:18,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:56:18,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:56:18,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:56:18,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:56:18,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:56:18,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:56:18,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:56:18,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:56:18,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:56:18,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:56:18,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:56:18,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:56:18,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:56:18,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:56:18,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:56:18,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:56:18,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:56:18,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:56:18,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:56:18,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:56:18,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:56:18,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:56:18,145 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:56:18,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:56:18,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:56:18,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:56:18,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:56:18,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:56:18,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:56:18,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:56:18,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:56:18,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:56:18,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:56:18,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:56:18,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:56:18,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:56:18,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:56:18,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:56:18,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:56:18,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:56:18,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:56:18,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:56:18,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:56:18,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:56:18,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:56:18,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:56:18,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:56:18,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:56:18,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:56:18,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:56:18,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:56:18,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:56:18,666 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:56:18,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2020-10-28 12:56:18,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4efdbbc4/8e83663d0941450baf77c12e7547a742/FLAG74685812f [2020-10-28 12:56:19,532 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:56:19,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2020-10-28 12:56:19,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4efdbbc4/8e83663d0941450baf77c12e7547a742/FLAG74685812f [2020-10-28 12:56:19,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4efdbbc4/8e83663d0941450baf77c12e7547a742 [2020-10-28 12:56:19,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:56:19,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:56:19,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:56:19,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:56:19,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:56:19,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:56:19" (1/1) ... [2020-10-28 12:56:19,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35dca622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:19, skipping insertion in model container [2020-10-28 12:56:19,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:56:19" (1/1) ... [2020-10-28 12:56:19,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:56:19,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:56:20,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:56:20,582 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:56:20,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:56:20,813 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:56:20,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20 WrapperNode [2020-10-28 12:56:20,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:56:20,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:56:20,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:56:20,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:56:20,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20" (1/1) ... [2020-10-28 12:56:20,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20" (1/1) ... [2020-10-28 12:56:20,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20" (1/1) ... [2020-10-28 12:56:20,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20" (1/1) ... [2020-10-28 12:56:20,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20" (1/1) ... [2020-10-28 12:56:20,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20" (1/1) ... [2020-10-28 12:56:20,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20" (1/1) ... [2020-10-28 12:56:21,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:56:21,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:56:21,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:56:21,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:56:21,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:56:21,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:56:21,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:56:21,086 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:56:21,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:56:21,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:56:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:56:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:56:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:56:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:56:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:56:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:56:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:56:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:56:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:56:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:56:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:56:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:56:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:56:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:56:22,801 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:56:22,802 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:56:22,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:56:22 BoogieIcfgContainer [2020-10-28 12:56:22,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:56:22,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:56:22,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:56:22,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:56:22,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:56:19" (1/3) ... [2020-10-28 12:56:22,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcf67ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:56:22, skipping insertion in model container [2020-10-28 12:56:22,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:56:20" (2/3) ... [2020-10-28 12:56:22,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcf67ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:56:22, skipping insertion in model container [2020-10-28 12:56:22,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:56:22" (3/3) ... [2020-10-28 12:56:22,814 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label50.c [2020-10-28 12:56:22,827 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:56:22,833 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:56:22,847 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:56:22,878 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:56:22,878 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:56:22,878 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:56:22,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:56:22,879 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:56:22,879 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:56:22,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:56:22,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:56:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-28 12:56:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 12:56:22,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:56:22,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:56:22,914 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:56:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:56:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash -200165848, now seen corresponding path program 1 times [2020-10-28 12:56:22,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:56:22,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820381626] [2020-10-28 12:56:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:56:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:23,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:23,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 12:56:23,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:23,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-28 12:56:23,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:23,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:23,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:56:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:56:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 12:56:23,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:56:23,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:56:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:23,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:23,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:56:23,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:56:23,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:23,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:56:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:56:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:56:23,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:56:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:56:24,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820381626] [2020-10-28 12:56:24,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:56:24,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:56:24,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926461791] [2020-10-28 12:56:24,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:56:24,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:56:24,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:56:24,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:56:24,035 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-28 12:56:27,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:56:27,577 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-28 12:56:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:56:27,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-28 12:56:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:56:27,605 INFO L225 Difference]: With dead ends: 891 [2020-10-28 12:56:27,606 INFO L226 Difference]: Without dead ends: 565 [2020-10-28 12:56:27,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:56:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-28 12:56:27,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-28 12:56:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-28 12:56:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-28 12:56:27,742 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 44 [2020-10-28 12:56:27,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:56:27,743 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-28 12:56:27,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:56:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-28 12:56:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 12:56:27,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:56:27,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:56:27,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:56:27,759 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:56:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:56:27,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1681292112, now seen corresponding path program 1 times [2020-10-28 12:56:27,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:56:27,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9440061] [2020-10-28 12:56:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:56:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:29,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:29,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 12:56:29,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:56:29,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1439 [2020-10-28 12:56:29,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:29,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:56:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:56:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:56:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:56:29,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:56:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:29,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:29,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:56:29,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:56:29,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:29,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:56:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:56:29,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:56:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:56:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:56:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:29,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:29,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:56:29,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 12:56:29,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:29,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:56:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:56:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:56:29,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:56:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:56:29,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9440061] [2020-10-28 12:56:29,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:56:29,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:56:29,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537361326] [2020-10-28 12:56:29,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:56:29,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:56:29,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:56:29,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:56:29,922 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 7 states. [2020-10-28 12:56:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:56:32,280 INFO L93 Difference]: Finished difference Result 1310 states and 2143 transitions. [2020-10-28 12:56:32,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:56:32,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-28 12:56:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:56:32,293 INFO L225 Difference]: With dead ends: 1310 [2020-10-28 12:56:32,293 INFO L226 Difference]: Without dead ends: 757 [2020-10-28 12:56:32,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:56:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-10-28 12:56:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 563. [2020-10-28 12:56:32,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-28 12:56:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 857 transitions. [2020-10-28 12:56:32,372 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 857 transitions. Word has length 130 [2020-10-28 12:56:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:56:32,375 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 857 transitions. [2020-10-28 12:56:32,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:56:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 857 transitions. [2020-10-28 12:56:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-28 12:56:32,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:56:32,388 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:56:32,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:56:32,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:56:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:56:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1474593372, now seen corresponding path program 1 times [2020-10-28 12:56:32,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:56:32,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391135827] [2020-10-28 12:56:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:56:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:32,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:32,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:36,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:36,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-28 12:56:36,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:56:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3843 [2020-10-28 12:56:36,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:36,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:56:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 12:56:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:56:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:56:36,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:56:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:36,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:36,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:36,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:56:36,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:36,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:56:36,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:36,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:56:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:56:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:56:36,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:56:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:56:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:36,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:36,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:36,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:56:36,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:56:36,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:36,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:56:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:56:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 12:56:36,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:56:36,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 12:56:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:36,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:36,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:36,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:56:36,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:56:36,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:36,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:56:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:56:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:56:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:56:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:56:36,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391135827] [2020-10-28 12:56:36,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:56:36,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:56:36,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742891279] [2020-10-28 12:56:36,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:56:36,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:56:36,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:56:36,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:56:36,860 INFO L87 Difference]: Start difference. First operand 563 states and 857 transitions. Second operand 7 states. [2020-10-28 12:56:39,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:56:39,440 INFO L93 Difference]: Finished difference Result 1326 states and 2055 transitions. [2020-10-28 12:56:39,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:56:39,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-10-28 12:56:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:56:39,453 INFO L225 Difference]: With dead ends: 1326 [2020-10-28 12:56:39,454 INFO L226 Difference]: Without dead ends: 769 [2020-10-28 12:56:39,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:56:39,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-28 12:56:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 755. [2020-10-28 12:56:39,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-10-28 12:56:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1064 transitions. [2020-10-28 12:56:39,504 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1064 transitions. Word has length 199 [2020-10-28 12:56:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:56:39,509 INFO L481 AbstractCegarLoop]: Abstraction has 755 states and 1064 transitions. [2020-10-28 12:56:39,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:56:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1064 transitions. [2020-10-28 12:56:39,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-28 12:56:39,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:56:39,517 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:56:39,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:56:39,518 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:56:39,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:56:39,518 INFO L82 PathProgramCache]: Analyzing trace with hash 890856564, now seen corresponding path program 1 times [2020-10-28 12:56:39,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:56:39,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825005895] [2020-10-28 12:56:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:56:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:39,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:39,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:42,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:44,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:44,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 12:56:44,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:56:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4751 [2020-10-28 12:56:44,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:44,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:56:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 12:56:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:56:44,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:56:44,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:56:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:44,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:44,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:56:44,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:44,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:56:44,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:44,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:56:44,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:56:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:56:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:56:44,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:56:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:44,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:44,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:44,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:56:44,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:56:44,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:44,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:56:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:56:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 12:56:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:56:44,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 12:56:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:44,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:44,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:56:44,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 12:56:44,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:44,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:56:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:56:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:56:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:56:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:56:45,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825005895] [2020-10-28 12:56:45,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:56:45,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:56:45,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423946628] [2020-10-28 12:56:45,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:56:45,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:56:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:56:45,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:56:45,061 INFO L87 Difference]: Start difference. First operand 755 states and 1064 transitions. Second operand 8 states. [2020-10-28 12:56:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:56:47,788 INFO L93 Difference]: Finished difference Result 1766 states and 2564 transitions. [2020-10-28 12:56:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:56:47,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-10-28 12:56:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:56:47,801 INFO L225 Difference]: With dead ends: 1766 [2020-10-28 12:56:47,801 INFO L226 Difference]: Without dead ends: 821 [2020-10-28 12:56:47,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:56:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-10-28 12:56:47,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 755. [2020-10-28 12:56:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-10-28 12:56:47,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 991 transitions. [2020-10-28 12:56:47,864 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 991 transitions. Word has length 208 [2020-10-28 12:56:47,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:56:47,865 INFO L481 AbstractCegarLoop]: Abstraction has 755 states and 991 transitions. [2020-10-28 12:56:47,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:56:47,865 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 991 transitions. [2020-10-28 12:56:47,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-28 12:56:47,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:56:47,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:56:47,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:56:47,869 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:56:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:56:47,870 INFO L82 PathProgramCache]: Analyzing trace with hash -111579780, now seen corresponding path program 1 times [2020-10-28 12:56:47,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:56:47,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595877088] [2020-10-28 12:56:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:56:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:47,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:52,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:52,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 12:56:52,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:56:52,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 12:56:52,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:52,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:52,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:56:52,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 12:56:52,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:56:52,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:56:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:56:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:53,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:53,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:53,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:56:53,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:53,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:56:53,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:53,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:56:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:56:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:56:53,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:56:53,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:56:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:53,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:53,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:53,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:56:53,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:53,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:56:53,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:53,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:56:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:56:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:56:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:56:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 12:56:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:53,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:53,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:56:53,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:56:53,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:56:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:56:53,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:56:53,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:56:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:56:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:56:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:56:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:56:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:56:53,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595877088] [2020-10-28 12:56:53,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:56:53,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:56:53,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737487589] [2020-10-28 12:56:53,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:56:53,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:56:53,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:56:53,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:56:53,444 INFO L87 Difference]: Start difference. First operand 755 states and 991 transitions. Second operand 7 states. [2020-10-28 12:56:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:56:55,528 INFO L93 Difference]: Finished difference Result 1702 states and 2199 transitions. [2020-10-28 12:56:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:56:55,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-28 12:56:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:56:55,534 INFO L225 Difference]: With dead ends: 1702 [2020-10-28 12:56:55,534 INFO L226 Difference]: Without dead ends: 765 [2020-10-28 12:56:55,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:56:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-10-28 12:56:55,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 751. [2020-10-28 12:56:55,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-28 12:56:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 863 transitions. [2020-10-28 12:56:55,565 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 863 transitions. Word has length 212 [2020-10-28 12:56:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:56:55,566 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 863 transitions. [2020-10-28 12:56:55,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:56:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 863 transitions. [2020-10-28 12:56:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 12:56:55,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:56:55,571 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:56:55,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:56:55,571 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:56:55,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:56:55,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1564833152, now seen corresponding path program 1 times [2020-10-28 12:56:55,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:56:55,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974374925] [2020-10-28 12:56:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:56:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:56:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:56:56,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:00,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:00,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-28 12:57:00,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:57:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 12:57:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:00,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:57:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:57:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-28 12:57:00,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:00,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:00,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:00,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:00,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:00,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:00,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:57:00,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:00,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:00,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:00,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:00,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:57:00,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:00,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:01,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:01,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:57:01,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:01,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-28 12:57:01,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:01,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:57:01,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:01,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-28 12:57:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:01,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:01,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:57:01,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:01,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:57:01,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:01,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:57:01,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:01,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 72 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:57:01,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974374925] [2020-10-28 12:57:01,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:01,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:57:01,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627644886] [2020-10-28 12:57:01,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:01,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:01,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:01,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:01,633 INFO L87 Difference]: Start difference. First operand 751 states and 863 transitions. Second operand 7 states. [2020-10-28 12:57:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:03,266 INFO L93 Difference]: Finished difference Result 1700 states and 1952 transitions. [2020-10-28 12:57:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:57:03,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-28 12:57:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:03,275 INFO L225 Difference]: With dead ends: 1700 [2020-10-28 12:57:03,275 INFO L226 Difference]: Without dead ends: 955 [2020-10-28 12:57:03,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:57:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-10-28 12:57:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 935. [2020-10-28 12:57:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-28 12:57:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1053 transitions. [2020-10-28 12:57:03,321 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1053 transitions. Word has length 309 [2020-10-28 12:57:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:03,321 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1053 transitions. [2020-10-28 12:57:03,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1053 transitions. [2020-10-28 12:57:03,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-28 12:57:03,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:03,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:57:03,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:57:03,332 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:03,333 INFO L82 PathProgramCache]: Analyzing trace with hash 936450980, now seen corresponding path program 1 times [2020-10-28 12:57:03,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:03,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892641161] [2020-10-28 12:57:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:03,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:08,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:08,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-28 12:57:08,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:57:08,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 12:57:08,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:08,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:08,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-28 12:57:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:57:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:08,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:08,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:08,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:08,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:57:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:08,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:08,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:08,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:57:08,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:57:08,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:08,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:57:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:08,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 12:57:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:08,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:09,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:09,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:57:09,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:09,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-28 12:57:09,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:09,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:57:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:09,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-28 12:57:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:09,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:09,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:57:09,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:57:09,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:09,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:57:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:09,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 218 proven. 85 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 12:57:09,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892641161] [2020-10-28 12:57:09,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:09,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:57:09,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064860479] [2020-10-28 12:57:09,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:09,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:09,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:09,340 INFO L87 Difference]: Start difference. First operand 935 states and 1053 transitions. Second operand 7 states. [2020-10-28 12:57:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:11,214 INFO L93 Difference]: Finished difference Result 2262 states and 2643 transitions. [2020-10-28 12:57:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:57:11,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-28 12:57:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:11,224 INFO L225 Difference]: With dead ends: 2262 [2020-10-28 12:57:11,224 INFO L226 Difference]: Without dead ends: 1515 [2020-10-28 12:57:11,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:57:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-10-28 12:57:11,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1311. [2020-10-28 12:57:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-28 12:57:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1474 transitions. [2020-10-28 12:57:11,271 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1474 transitions. Word has length 418 [2020-10-28 12:57:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:11,272 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1474 transitions. [2020-10-28 12:57:11,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1474 transitions. [2020-10-28 12:57:11,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-28 12:57:11,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:11,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:57:11,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:57:11,282 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:11,283 INFO L82 PathProgramCache]: Analyzing trace with hash -778775084, now seen corresponding path program 1 times [2020-10-28 12:57:11,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:11,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709921873] [2020-10-28 12:57:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:16,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:16,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-10-28 12:57:16,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:57:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 12:57:16,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:16,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-28 12:57:16,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:57:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:16,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:16,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:16,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:16,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:57:16,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:16,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:16,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:16,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:16,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:16,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:57:16,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 12:57:16,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:16,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 12:57:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:16,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 12:57:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:16,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:57:16,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:16,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-28 12:57:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:16,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:57:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:17,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-28 12:57:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:17,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:17,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:57:17,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:57:17,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:17,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:57:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:17,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 242 proven. 85 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 12:57:17,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709921873] [2020-10-28 12:57:17,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:17,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:57:17,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550874062] [2020-10-28 12:57:17,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:17,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:17,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:17,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:17,224 INFO L87 Difference]: Start difference. First operand 1311 states and 1474 transitions. Second operand 7 states. [2020-10-28 12:57:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:19,058 INFO L93 Difference]: Finished difference Result 3746 states and 4284 transitions. [2020-10-28 12:57:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:57:19,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2020-10-28 12:57:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:19,077 INFO L225 Difference]: With dead ends: 3746 [2020-10-28 12:57:19,078 INFO L226 Difference]: Without dead ends: 2441 [2020-10-28 12:57:19,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:57:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2020-10-28 12:57:19,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 2247. [2020-10-28 12:57:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2247 states. [2020-10-28 12:57:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 2495 transitions. [2020-10-28 12:57:19,163 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 2495 transitions. Word has length 442 [2020-10-28 12:57:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:19,164 INFO L481 AbstractCegarLoop]: Abstraction has 2247 states and 2495 transitions. [2020-10-28 12:57:19,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 2495 transitions. [2020-10-28 12:57:19,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-28 12:57:19,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:19,187 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 12:57:19,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:57:19,187 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:19,188 INFO L82 PathProgramCache]: Analyzing trace with hash -151872020, now seen corresponding path program 1 times [2020-10-28 12:57:19,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:19,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095777743] [2020-10-28 12:57:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:24,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:24,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-28 12:57:24,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:57:24,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 12:57:24,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:24,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-10-28 12:57:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:57:24,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:24,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:24,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:24,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:24,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:24,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:24,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:57:24,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:24,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:24,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:24,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:24,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:24,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:57:24,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:24,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:57:24,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:24,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:24,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:24,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:24,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:24,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:24,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 12:57:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:24,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:24,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:57:24,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:57:24,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:24,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:57:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-28 12:57:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:24,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:57:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:57:24,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:24,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:57:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-10-28 12:57:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:25,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:25,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:57:25,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:25,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:57:25,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:25,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 12:57:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:25,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 419 proven. 94 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-10-28 12:57:25,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095777743] [2020-10-28 12:57:25,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:25,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:57:25,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112111942] [2020-10-28 12:57:25,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:25,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:25,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:25,311 INFO L87 Difference]: Start difference. First operand 2247 states and 2495 transitions. Second operand 7 states. [2020-10-28 12:57:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:27,178 INFO L93 Difference]: Finished difference Result 5069 states and 5774 transitions. [2020-10-28 12:57:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:57:27,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 586 [2020-10-28 12:57:27,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:27,200 INFO L225 Difference]: With dead ends: 5069 [2020-10-28 12:57:27,201 INFO L226 Difference]: Without dead ends: 3194 [2020-10-28 12:57:27,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:57:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2020-10-28 12:57:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2991. [2020-10-28 12:57:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2991 states. [2020-10-28 12:57:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 3401 transitions. [2020-10-28 12:57:27,306 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 3401 transitions. Word has length 586 [2020-10-28 12:57:27,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:27,307 INFO L481 AbstractCegarLoop]: Abstraction has 2991 states and 3401 transitions. [2020-10-28 12:57:27,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 3401 transitions. [2020-10-28 12:57:27,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2020-10-28 12:57:27,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:27,318 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 12:57:27,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:57:27,318 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:27,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:27,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2102567672, now seen corresponding path program 1 times [2020-10-28 12:57:27,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:27,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849542703] [2020-10-28 12:57:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:27,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:27,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:32,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:32,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 682 [2020-10-28 12:57:32,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:57:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 12:57:32,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:32,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-28 12:57:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-28 12:57:32,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:32,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:32,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:32,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:32,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:57:32,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:32,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:32,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:32,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:32,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:32,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:32,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:57:32,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:57:32,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:32,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:57:32,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:32,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 12:57:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:32,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:32,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:57:32,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 12:57:32,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:32,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 12:57:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-28 12:57:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:32,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:32,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:57:32,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:32,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:57:32,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:32,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 12:57:32,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-28 12:57:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:33,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:33,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:33,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:57:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:57:33,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:33,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:57:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-10-28 12:57:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:33,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:33,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:57:33,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:57:33,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:33,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 12:57:33,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:33,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 298 proven. 323 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2020-10-28 12:57:33,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849542703] [2020-10-28 12:57:33,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:33,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:57:33,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354608202] [2020-10-28 12:57:33,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:33,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:33,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:33,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:33,475 INFO L87 Difference]: Start difference. First operand 2991 states and 3401 transitions. Second operand 7 states. [2020-10-28 12:57:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:35,513 INFO L93 Difference]: Finished difference Result 6912 states and 8095 transitions. [2020-10-28 12:57:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:57:35,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 662 [2020-10-28 12:57:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:35,538 INFO L225 Difference]: With dead ends: 6912 [2020-10-28 12:57:35,538 INFO L226 Difference]: Without dead ends: 4293 [2020-10-28 12:57:35,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:57:35,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2020-10-28 12:57:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 4289. [2020-10-28 12:57:35,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4289 states. [2020-10-28 12:57:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4289 states to 4289 states and 4946 transitions. [2020-10-28 12:57:35,690 INFO L78 Accepts]: Start accepts. Automaton has 4289 states and 4946 transitions. Word has length 662 [2020-10-28 12:57:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:35,690 INFO L481 AbstractCegarLoop]: Abstraction has 4289 states and 4946 transitions. [2020-10-28 12:57:35,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states and 4946 transitions. [2020-10-28 12:57:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2020-10-28 12:57:35,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:35,705 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:57:35,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:57:35,705 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:35,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:35,706 INFO L82 PathProgramCache]: Analyzing trace with hash -524505836, now seen corresponding path program 1 times [2020-10-28 12:57:35,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:35,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675380051] [2020-10-28 12:57:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:40,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:40,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 724 [2020-10-28 12:57:40,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:57:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 12:57:40,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:40,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-28 12:57:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:57:40,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:41,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:41,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 12:57:41,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:41,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:41,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:41,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:57:41,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:41,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 12:57:41,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:41,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 12:57:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:41,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 12:57:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:41,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:41,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:41,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:57:41,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 12:57:41,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:41,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:57:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:41,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-28 12:57:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:41,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:41,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:41,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:57:41,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:57:41,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:41,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 12:57:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:41,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-10-28 12:57:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:41,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:41,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:57:41,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:41,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:57:41,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:41,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:41,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:41,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:57:41,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:41,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:41,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 12:57:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:41,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:41,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:41,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:57:41,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:41,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:57:41,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:41,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:41,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 12:57:41,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 322 proven. 341 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2020-10-28 12:57:42,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675380051] [2020-10-28 12:57:42,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:42,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:57:42,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513640629] [2020-10-28 12:57:42,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:57:42,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:42,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:57:42,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:57:42,344 INFO L87 Difference]: Start difference. First operand 4289 states and 4946 transitions. Second operand 8 states. [2020-10-28 12:57:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:45,396 INFO L93 Difference]: Finished difference Result 9143 states and 10736 transitions. [2020-10-28 12:57:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:57:45,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 704 [2020-10-28 12:57:45,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:45,426 INFO L225 Difference]: With dead ends: 9143 [2020-10-28 12:57:45,426 INFO L226 Difference]: Without dead ends: 5036 [2020-10-28 12:57:45,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:57:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2020-10-28 12:57:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4847. [2020-10-28 12:57:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4847 states. [2020-10-28 12:57:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 5617 transitions. [2020-10-28 12:57:45,598 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 5617 transitions. Word has length 704 [2020-10-28 12:57:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:45,599 INFO L481 AbstractCegarLoop]: Abstraction has 4847 states and 5617 transitions. [2020-10-28 12:57:45,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:57:45,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 5617 transitions. [2020-10-28 12:57:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-28 12:57:45,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:45,612 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:57:45,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:57:45,613 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:45,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1656186684, now seen corresponding path program 1 times [2020-10-28 12:57:45,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:45,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944771715] [2020-10-28 12:57:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:48,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:50,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:50,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 812 [2020-10-28 12:57:50,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:57:50,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-28 12:57:50,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:50,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:50,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:50,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:57:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:57:50,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:50,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:50,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:50,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:50,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:50,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:50,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:57:50,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:50,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:50,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:57:50,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:50,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:51,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:57:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:51,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:51,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:57:51,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:51,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:57:51,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:51,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:51,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:51,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:57:51,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:51,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:57:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:51,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:51,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:57:51,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:51,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 12:57:51,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:51,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:57:51,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:51,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-28 12:57:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:51,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:51,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:57:51,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:57:51,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:51,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 12:57:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-10-28 12:57:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:51,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:51,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:57:51,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:57:51,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:51,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:57:51,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:51,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:51,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-28 12:57:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:51,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:51,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:57:51,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:57:51,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:51,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 12:57:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 458 proven. 341 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2020-10-28 12:57:52,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944771715] [2020-10-28 12:57:52,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:52,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:57:52,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546399345] [2020-10-28 12:57:52,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:57:52,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:52,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:57:52,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:57:52,355 INFO L87 Difference]: Start difference. First operand 4847 states and 5617 transitions. Second operand 8 states. [2020-10-28 12:57:54,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:54,811 INFO L93 Difference]: Finished difference Result 9698 states and 11325 transitions. [2020-10-28 12:57:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:57:54,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 790 [2020-10-28 12:57:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:54,838 INFO L225 Difference]: With dead ends: 9698 [2020-10-28 12:57:54,838 INFO L226 Difference]: Without dead ends: 5223 [2020-10-28 12:57:54,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:57:54,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2020-10-28 12:57:54,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 5217. [2020-10-28 12:57:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5217 states. [2020-10-28 12:57:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 5924 transitions. [2020-10-28 12:57:54,993 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 5924 transitions. Word has length 790 [2020-10-28 12:57:54,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:54,994 INFO L481 AbstractCegarLoop]: Abstraction has 5217 states and 5924 transitions. [2020-10-28 12:57:54,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:57:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 5924 transitions. [2020-10-28 12:57:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2020-10-28 12:57:55,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:55,008 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:57:55,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:57:55,008 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:55,009 INFO L82 PathProgramCache]: Analyzing trace with hash 973558792, now seen corresponding path program 1 times [2020-10-28 12:57:55,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:55,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138471351] [2020-10-28 12:57:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:00,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:00,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 923 [2020-10-28 12:58:00,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:58:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-28 12:58:00,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:00,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 770 [2020-10-28 12:58:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:58:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:00,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:00,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:00,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:58:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:00,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:00,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:00,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:00,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:00,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:58:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:00,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:00,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:00,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:00,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:00,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:00,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:58:00,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:00,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:00,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:00,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:00,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:58:00,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:00,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:58:00,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:00,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:00,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:00,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:58:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:00,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:00,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:58:00,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:58:00,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:00,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:00,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:00,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:58:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:00,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:00,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:58:00,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:58:00,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:00,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:00,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-28 12:58:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:00,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:00,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:00,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:00,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 12:58:00,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:00,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 12:58:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-10-28 12:58:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:01,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:01,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:58:01,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:58:01,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:01,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:58:01,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2392 backedges. 860 proven. 2 refuted. 0 times theorem prover too weak. 1530 trivial. 0 not checked. [2020-10-28 12:58:01,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138471351] [2020-10-28 12:58:01,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:01,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:58:01,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180847789] [2020-10-28 12:58:01,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:58:01,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:01,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:58:01,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:58:01,505 INFO L87 Difference]: Start difference. First operand 5217 states and 5924 transitions. Second operand 7 states. [2020-10-28 12:58:03,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:03,199 INFO L93 Difference]: Finished difference Result 11166 states and 12812 transitions. [2020-10-28 12:58:03,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:58:03,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 899 [2020-10-28 12:58:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:03,226 INFO L225 Difference]: With dead ends: 11166 [2020-10-28 12:58:03,226 INFO L226 Difference]: Without dead ends: 6321 [2020-10-28 12:58:03,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:58:03,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2020-10-28 12:58:03,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 6317. [2020-10-28 12:58:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6317 states. [2020-10-28 12:58:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 7161 transitions. [2020-10-28 12:58:03,401 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 7161 transitions. Word has length 899 [2020-10-28 12:58:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:03,402 INFO L481 AbstractCegarLoop]: Abstraction has 6317 states and 7161 transitions. [2020-10-28 12:58:03,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:58:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 7161 transitions. [2020-10-28 12:58:03,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 925 [2020-10-28 12:58:03,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:03,419 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:58:03,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:58:03,420 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:03,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:03,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2005667148, now seen corresponding path program 1 times [2020-10-28 12:58:03,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:03,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557000428] [2020-10-28 12:58:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:03,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:08,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:08,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 948 [2020-10-28 12:58:08,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:58:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-28 12:58:08,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:08,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-28 12:58:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:58:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:08,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:08,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:08,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:08,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:58:08,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:08,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:08,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:08,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:08,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:08,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:08,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:58:08,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:08,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:08,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:08,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:08,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:08,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:08,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:58:08,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:08,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:08,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:08,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:08,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:58:08,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:08,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:58:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-28 12:58:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:09,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:09,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:58:09,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 12:58:09,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:09,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:09,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:58:09,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:09,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-10-28 12:58:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:09,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:09,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:09,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:58:09,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:58:09,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:09,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 12:58:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:09,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:09,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-10-28 12:58:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:09,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:09,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:09,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:58:09,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:09,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:58:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:09,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2020-10-28 12:58:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:09,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:09,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:09,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:58:09,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:09,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:58:09,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:09,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-28 12:58:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 618 proven. 365 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2020-10-28 12:58:10,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557000428] [2020-10-28 12:58:10,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:10,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:58:10,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665195444] [2020-10-28 12:58:10,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:58:10,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:10,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:58:10,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:58:10,135 INFO L87 Difference]: Start difference. First operand 6317 states and 7161 transitions. Second operand 7 states. [2020-10-28 12:58:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:11,827 INFO L93 Difference]: Finished difference Result 12994 states and 14751 transitions. [2020-10-28 12:58:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:58:11,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 924 [2020-10-28 12:58:11,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:11,853 INFO L225 Difference]: With dead ends: 12994 [2020-10-28 12:58:11,853 INFO L226 Difference]: Without dead ends: 7049 [2020-10-28 12:58:11,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:58:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7049 states. [2020-10-28 12:58:12,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7049 to 6865. [2020-10-28 12:58:12,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6865 states. [2020-10-28 12:58:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6865 states to 6865 states and 7747 transitions. [2020-10-28 12:58:12,024 INFO L78 Accepts]: Start accepts. Automaton has 6865 states and 7747 transitions. Word has length 924 [2020-10-28 12:58:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:12,025 INFO L481 AbstractCegarLoop]: Abstraction has 6865 states and 7747 transitions. [2020-10-28 12:58:12,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:58:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 6865 states and 7747 transitions. [2020-10-28 12:58:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2020-10-28 12:58:12,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:12,043 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2020-10-28 12:58:12,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:58:12,043 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:12,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash -635585724, now seen corresponding path program 1 times [2020-10-28 12:58:12,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:12,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690685357] [2020-10-28 12:58:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:12,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:13,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:13,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1038 [2020-10-28 12:58:13,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1263 [2020-10-28 12:58:13,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:13,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-28 12:58:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:58:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:13,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:13,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:58:13,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:13,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:13,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:13,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:13,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:58:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:13,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:13,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:13,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:13,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:13,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:13,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:58:13,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:13,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:13,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:13,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:13,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:13,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:13,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:13,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:13,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:13,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:58:13,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:58:13,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:13,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:58:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:13,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:58:13,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:58:13,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:13,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:58:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:14,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:14,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:58:14,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:14,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 12:58:14,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:14,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:14,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:58:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:14,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:14,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:58:14,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:58:14,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:14,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:14,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:58:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:14,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:14,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:14,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:58:14,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:14,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:14,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 12:58:14,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:14,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:58:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:14,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:14,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:58:14,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:14,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 12:58:14,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:14,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 12:58:14,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3057 backedges. 1028 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-28 12:58:15,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690685357] [2020-10-28 12:58:15,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:15,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:58:15,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379572195] [2020-10-28 12:58:15,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:58:15,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:15,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:58:15,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:58:15,316 INFO L87 Difference]: Start difference. First operand 6865 states and 7747 transitions. Second operand 7 states. [2020-10-28 12:58:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:17,256 INFO L93 Difference]: Finished difference Result 13546 states and 15307 transitions. [2020-10-28 12:58:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:58:17,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1012 [2020-10-28 12:58:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:17,289 INFO L225 Difference]: With dead ends: 13546 [2020-10-28 12:58:17,289 INFO L226 Difference]: Without dead ends: 6871 [2020-10-28 12:58:17,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:58:17,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6871 states. [2020-10-28 12:58:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6871 to 6497. [2020-10-28 12:58:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6497 states. [2020-10-28 12:58:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6497 states to 6497 states and 7255 transitions. [2020-10-28 12:58:17,462 INFO L78 Accepts]: Start accepts. Automaton has 6497 states and 7255 transitions. Word has length 1012 [2020-10-28 12:58:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:17,464 INFO L481 AbstractCegarLoop]: Abstraction has 6497 states and 7255 transitions. [2020-10-28 12:58:17,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:58:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 6497 states and 7255 transitions. [2020-10-28 12:58:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-28 12:58:17,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:17,484 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:58:17,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:58:17,485 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:17,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:17,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1909440212, now seen corresponding path program 1 times [2020-10-28 12:58:17,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:17,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986119422] [2020-10-28 12:58:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:19,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:22,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:22,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1094 [2020-10-28 12:58:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:58:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-28 12:58:22,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:22,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1048 [2020-10-28 12:58:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 12:58:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:23,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:23,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:58:23,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:23,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:23,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:23,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:23,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:58:23,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:23,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:23,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:23,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:23,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:23,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:23,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:23,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:58:23,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:23,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:23,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:23,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:23,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:23,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:58:23,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:23,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:58:23,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:23,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:23,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:23,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:23,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:23,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:23,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:58:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:23,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:58:23,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:58:23,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:23,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:58:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:23,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:58:23,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:23,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:58:23,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:23,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:23,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:23,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:58:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:23,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:58:23,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:58:23,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:23,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:23,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:23,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:58:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:23,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:58:23,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:23,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:58:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:23,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:58:23,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:23,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:58:23,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:23,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:23,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:23,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-28 12:58:23,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 301 proven. 8 refuted. 0 times theorem prover too weak. 2860 trivial. 0 not checked. [2020-10-28 12:58:24,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986119422] [2020-10-28 12:58:24,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:24,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:58:24,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542086120] [2020-10-28 12:58:24,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:58:24,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:24,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:58:24,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:58:24,469 INFO L87 Difference]: Start difference. First operand 6497 states and 7255 transitions. Second operand 6 states. [2020-10-28 12:58:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:26,495 INFO L93 Difference]: Finished difference Result 12812 states and 14327 transitions. [2020-10-28 12:58:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:58:26,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1068 [2020-10-28 12:58:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:26,516 INFO L225 Difference]: With dead ends: 12812 [2020-10-28 12:58:26,516 INFO L226 Difference]: Without dead ends: 6505 [2020-10-28 12:58:26,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:58:26,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2020-10-28 12:58:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 5767. [2020-10-28 12:58:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5767 states. [2020-10-28 12:58:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 6255 transitions. [2020-10-28 12:58:26,660 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 6255 transitions. Word has length 1068 [2020-10-28 12:58:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:26,661 INFO L481 AbstractCegarLoop]: Abstraction has 5767 states and 6255 transitions. [2020-10-28 12:58:26,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:58:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 6255 transitions. [2020-10-28 12:58:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2020-10-28 12:58:26,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:26,682 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2020-10-28 12:58:26,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:58:26,683 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:26,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:26,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1510477188, now seen corresponding path program 1 times [2020-10-28 12:58:26,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:26,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294895640] [2020-10-28 12:58:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:31,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:31,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1119 [2020-10-28 12:58:31,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:58:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-28 12:58:31,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:31,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 952 [2020-10-28 12:58:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:58:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:32,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:58:32,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:32,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:32,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:58:32,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:32,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:58:32,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:32,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:58:32,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:58:32,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:58:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:58:32,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:58:32,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:58:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:58:32,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:58:32,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:58:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:58:32,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:58:32,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:58:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:32,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:58:32,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:32,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:58:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:58:32,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:58:32,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:32,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:58:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 936 [2020-10-28 12:58:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:32,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:58:32,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:32,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 12:58:32,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:32,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:32,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 12:58:32,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1145 proven. 2 refuted. 0 times theorem prover too weak. 2575 trivial. 0 not checked. [2020-10-28 12:58:34,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294895640] [2020-10-28 12:58:34,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:34,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:58:34,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754605956] [2020-10-28 12:58:34,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:58:34,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:34,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:58:34,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:58:34,379 INFO L87 Difference]: Start difference. First operand 5767 states and 6255 transitions. Second operand 7 states. [2020-10-28 12:58:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:36,307 INFO L93 Difference]: Finished difference Result 11534 states and 12531 transitions. [2020-10-28 12:58:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:58:36,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1091 [2020-10-28 12:58:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:36,338 INFO L225 Difference]: With dead ends: 11534 [2020-10-28 12:58:36,338 INFO L226 Difference]: Without dead ends: 5957 [2020-10-28 12:58:36,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:58:36,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2020-10-28 12:58:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 5949. [2020-10-28 12:58:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5949 states. [2020-10-28 12:58:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5949 states to 5949 states and 6447 transitions. [2020-10-28 12:58:36,498 INFO L78 Accepts]: Start accepts. Automaton has 5949 states and 6447 transitions. Word has length 1091 [2020-10-28 12:58:36,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:36,500 INFO L481 AbstractCegarLoop]: Abstraction has 5949 states and 6447 transitions. [2020-10-28 12:58:36,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:58:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5949 states and 6447 transitions. [2020-10-28 12:58:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2020-10-28 12:58:36,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:36,523 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2020-10-28 12:58:36,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:58:36,524 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:36,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:36,524 INFO L82 PathProgramCache]: Analyzing trace with hash -859751236, now seen corresponding path program 1 times [2020-10-28 12:58:36,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:36,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143103947] [2020-10-28 12:58:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:41,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:41,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1126 [2020-10-28 12:58:41,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:58:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-28 12:58:41,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:41,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 959 [2020-10-28 12:58:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:58:41,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:41,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:41,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:41,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:41,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:41,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:58:41,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:41,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:42,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:42,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:42,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:58:42,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:42,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:42,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:42,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:42,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:42,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:42,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:42,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:58:42,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:42,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:42,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:42,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:42,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:42,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:42,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:58:42,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:42,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:58:42,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:42,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:42,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:58:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:42,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:58:42,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:42,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:58:42,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:42,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:42,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:42,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:58:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:42,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:42,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:58:42,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:58:42,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:42,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:42,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:42,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:58:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:42,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:42,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:58:42,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:42,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:58:42,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:42,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:42,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:58:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:42,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:42,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:42,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:42,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:58:42,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:42,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:42,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:42,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:42,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:58:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:42,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:58:42,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:58:42,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:42,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:58:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:42,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 943 [2020-10-28 12:58:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:42,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:58:42,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:42,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:58:42,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:42,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:42,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:42,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:42,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 12:58:42,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3766 backedges. 1152 proven. 2 refuted. 0 times theorem prover too weak. 2612 trivial. 0 not checked. [2020-10-28 12:58:43,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143103947] [2020-10-28 12:58:43,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:43,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:58:43,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209249741] [2020-10-28 12:58:43,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:58:43,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:43,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:58:43,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:58:43,770 INFO L87 Difference]: Start difference. First operand 5949 states and 6447 transitions. Second operand 8 states. [2020-10-28 12:58:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:46,558 INFO L93 Difference]: Finished difference Result 13204 states and 14437 transitions. [2020-10-28 12:58:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:58:46,559 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1098 [2020-10-28 12:58:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:46,575 INFO L225 Difference]: With dead ends: 13204 [2020-10-28 12:58:46,576 INFO L226 Difference]: Without dead ends: 5777 [2020-10-28 12:58:46,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:58:46,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5777 states. [2020-10-28 12:58:46,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5777 to 4647. [2020-10-28 12:58:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4647 states. [2020-10-28 12:58:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 4878 transitions. [2020-10-28 12:58:46,716 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 4878 transitions. Word has length 1098 [2020-10-28 12:58:46,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:46,717 INFO L481 AbstractCegarLoop]: Abstraction has 4647 states and 4878 transitions. [2020-10-28 12:58:46,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:58:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 4878 transitions. [2020-10-28 12:58:46,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2020-10-28 12:58:46,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:46,743 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:58:46,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:58:46,743 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:46,744 INFO L82 PathProgramCache]: Analyzing trace with hash -763309596, now seen corresponding path program 1 times [2020-10-28 12:58:46,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:46,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138321175] [2020-10-28 12:58:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:52,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:52,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1167 [2020-10-28 12:58:52,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:58:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 12:58:52,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:52,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:58:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-28 12:58:52,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 311 [2020-10-28 12:58:52,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:52,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:52,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:52,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:52,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:52,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:52,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:58:52,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:52,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:52,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:52,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:52,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:52,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:52,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:52,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:58:52,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:52,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:52,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:52,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:52,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:52,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:52,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:58:52,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:52,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:52,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:52,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:58:52,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:58:52,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:52,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:52,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:58:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:52,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:52,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:52,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:58:52,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:52,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:58:52,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:52,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:52,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:52,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:58:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:52,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:52,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:58:52,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:52,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:58:52,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:52,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:52,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:52,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:52,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:58:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:52,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:58:52,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:58:52,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:52,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:52,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:52,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:52,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:58:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:52,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:58:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:52,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:52,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:52,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:52,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 12:58:52,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:52,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:58:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:58:52,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:52,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:58:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:53,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:53,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 12:58:53,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:58:53,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:53,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:53,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 12:58:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 984 [2020-10-28 12:58:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:53,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:53,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:53,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:58:53,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:53,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:58:53,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:53,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-28 12:58:53,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:53,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3959 backedges. 1645 proven. 236 refuted. 0 times theorem prover too weak. 2078 trivial. 0 not checked. [2020-10-28 12:58:53,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138321175] [2020-10-28 12:58:53,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:53,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 12:58:53,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651829766] [2020-10-28 12:58:53,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 12:58:53,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:53,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 12:58:53,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:58:53,965 INFO L87 Difference]: Start difference. First operand 4647 states and 4878 transitions. Second operand 9 states. [2020-10-28 12:58:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:57,359 INFO L93 Difference]: Finished difference Result 10028 states and 10550 transitions. [2020-10-28 12:58:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 12:58:57,360 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1139 [2020-10-28 12:58:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:57,374 INFO L225 Difference]: With dead ends: 10028 [2020-10-28 12:58:57,374 INFO L226 Difference]: Without dead ends: 5571 [2020-10-28 12:58:57,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-10-28 12:58:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5571 states. [2020-10-28 12:58:57,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5571 to 4833. [2020-10-28 12:58:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4833 states. [2020-10-28 12:58:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 5066 transitions. [2020-10-28 12:58:57,503 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 5066 transitions. Word has length 1139 [2020-10-28 12:58:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:57,504 INFO L481 AbstractCegarLoop]: Abstraction has 4833 states and 5066 transitions. [2020-10-28 12:58:57,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 12:58:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 5066 transitions. [2020-10-28 12:58:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1388 [2020-10-28 12:58:57,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:57,538 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:58:57,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:58:57,538 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:57,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1634269532, now seen corresponding path program 1 times [2020-10-28 12:58:57,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:57,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726548789] [2020-10-28 12:58:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:57,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:02,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:02,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1419 [2020-10-28 12:59:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:59:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 12:59:02,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:02,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 991 [2020-10-28 12:59:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:59:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:03,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:59:03,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:03,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:03,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:59:03,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:03,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:03,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:59:03,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:03,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:03,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:03,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:59:03,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:59:03,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:59:03,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:59:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:03,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:59:03,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:03,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:03,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:59:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:03,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:59:03,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:03,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:59:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:03,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:59:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:59:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:59:03,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 12:59:03,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:59:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:59:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:59:04,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:59:04,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:04,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:59:04,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:04,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1105 [2020-10-28 12:59:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 12:59:04,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:59:04,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-28 12:59:04,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:04,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:04,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1232 [2020-10-28 12:59:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:59:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:59:04,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-28 12:59:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6113 backedges. 1342 proven. 242 refuted. 0 times theorem prover too weak. 4529 trivial. 0 not checked. [2020-10-28 12:59:05,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726548789] [2020-10-28 12:59:05,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:05,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:59:05,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343750202] [2020-10-28 12:59:05,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:59:05,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:05,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:59:05,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:05,884 INFO L87 Difference]: Start difference. First operand 4833 states and 5066 transitions. Second operand 7 states. [2020-10-28 12:59:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:07,906 INFO L93 Difference]: Finished difference Result 9484 states and 9951 transitions. [2020-10-28 12:59:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:59:07,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1387 [2020-10-28 12:59:07,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:07,923 INFO L225 Difference]: With dead ends: 9484 [2020-10-28 12:59:07,924 INFO L226 Difference]: Without dead ends: 4841 [2020-10-28 12:59:07,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:59:07,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2020-10-28 12:59:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 4833. [2020-10-28 12:59:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4833 states. [2020-10-28 12:59:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 5054 transitions. [2020-10-28 12:59:08,024 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 5054 transitions. Word has length 1387 [2020-10-28 12:59:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:08,025 INFO L481 AbstractCegarLoop]: Abstraction has 4833 states and 5054 transitions. [2020-10-28 12:59:08,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:59:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 5054 transitions. [2020-10-28 12:59:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2020-10-28 12:59:08,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:08,058 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:59:08,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:59:08,058 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:08,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1094809804, now seen corresponding path program 1 times [2020-10-28 12:59:08,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:08,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857628719] [2020-10-28 12:59:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:08,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:13,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-28 12:59:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:59:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-28 12:59:13,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:13,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:59:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1561 [2020-10-28 12:59:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 12:59:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:13,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:13,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:13,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:13,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:13,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:13,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:59:13,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:13,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:13,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:13,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:13,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:13,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:59:13,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:13,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:13,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:13,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:13,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:13,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:13,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:59:13,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:13,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:13,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:13,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:13,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:13,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:13,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:13,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:59:13,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:13,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:13,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:13,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:13,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:13,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:13,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:13,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:59:13,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:13,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:59:13,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:13,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:13,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:59:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:14,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:14,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:14,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:59:14,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:14,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:59:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:14,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:14,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:14,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:14,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:59:14,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:14,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:14,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:59:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:14,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:14,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:14,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:14,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:59:14,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:14,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:14,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:14,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:14,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:14,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:14,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:59:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:14,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:14,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:14,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:59:14,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:14,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:59:14,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:14,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:14,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:14,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:14,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:14,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:14,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:59:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:14,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:14,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:14,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:59:14,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:59:14,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:14,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:14,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:59:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:14,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:14,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:59:14,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:14,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:59:14,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:14,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:14,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:14,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:59:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:14,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:14,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:14,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:59:14,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:59:14,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:14,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:14,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:14,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-28 12:59:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:14,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:14,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 12:59:14,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:14,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 12:59:14,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:14,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:59:14,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:14,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-28 12:59:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:14,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:14,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:59:14,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:59:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:14,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:59:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 12:59:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8838 backedges. 1761 proven. 47 refuted. 0 times theorem prover too weak. 7030 trivial. 0 not checked. [2020-10-28 12:59:16,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857628719] [2020-10-28 12:59:16,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:16,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:59:16,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914011776] [2020-10-28 12:59:16,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:59:16,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:16,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:59:16,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:59:16,744 INFO L87 Difference]: Start difference. First operand 4833 states and 5054 transitions. Second operand 8 states. [2020-10-28 12:59:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:19,521 INFO L93 Difference]: Finished difference Result 11142 states and 11674 transitions. [2020-10-28 12:59:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:59:19,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1692 [2020-10-28 12:59:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:19,545 INFO L225 Difference]: With dead ends: 11142 [2020-10-28 12:59:19,545 INFO L226 Difference]: Without dead ends: 6313 [2020-10-28 12:59:19,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:59:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2020-10-28 12:59:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 5391. [2020-10-28 12:59:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5391 states. [2020-10-28 12:59:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5391 states to 5391 states and 5639 transitions. [2020-10-28 12:59:19,685 INFO L78 Accepts]: Start accepts. Automaton has 5391 states and 5639 transitions. Word has length 1692 [2020-10-28 12:59:19,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:19,687 INFO L481 AbstractCegarLoop]: Abstraction has 5391 states and 5639 transitions. [2020-10-28 12:59:19,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:59:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5391 states and 5639 transitions. [2020-10-28 12:59:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1763 [2020-10-28 12:59:19,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:19,726 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-28 12:59:19,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:59:19,727 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:19,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:19,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1539753244, now seen corresponding path program 1 times [2020-10-28 12:59:19,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:19,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866913390] [2020-10-28 12:59:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:20,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:20,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:25,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1798 [2020-10-28 12:59:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:59:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5172 [2020-10-28 12:59:25,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:25,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:59:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-28 12:59:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 317 [2020-10-28 12:59:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:25,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:25,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:25,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:25,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:25,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:59:25,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:25,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:25,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:25,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:25,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:25,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:25,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:25,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:59:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:25,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:25,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:25,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:25,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:25,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:59:25,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:25,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:25,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:25,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:25,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:25,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:59:25,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:25,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:25,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:25,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:25,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:25,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:25,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:25,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:59:25,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:25,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:59:25,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:25,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:25,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:59:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:25,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:25,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:25,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:25,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:59:25,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:25,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:59:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:25,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:25,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:25,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:25,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:59:25,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:25,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:25,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:25,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:59:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:25,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:25,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:25,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:25,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:25,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:59:25,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:25,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:26,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:59:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:26,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:26,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:59:26,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:59:26,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:26,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:26,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:59:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:26,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:59:26,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 12:59:26,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:26,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:59:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:26,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:59:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:26,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:59:26,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:59:26,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:26,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 12:59:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:59:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:26,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:59:26,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:26,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:59:26,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:26,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:59:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:26,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1427 [2020-10-28 12:59:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:26,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 12:59:26,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:26,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:59:26,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:26,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-28 12:59:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:26,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:26,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1607 [2020-10-28 12:59:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:59:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:59:26,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:26,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-28 12:59:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9106 backedges. 2658 proven. 538 refuted. 0 times theorem prover too weak. 5910 trivial. 0 not checked. [2020-10-28 12:59:28,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866913390] [2020-10-28 12:59:28,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:28,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:59:28,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353227101] [2020-10-28 12:59:28,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:59:28,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:28,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:59:28,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:28,844 INFO L87 Difference]: Start difference. First operand 5391 states and 5639 transitions. Second operand 7 states. [2020-10-28 12:59:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:31,404 INFO L93 Difference]: Finished difference Result 11324 states and 11859 transitions. [2020-10-28 12:59:31,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:59:31,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1762 [2020-10-28 12:59:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:31,419 INFO L225 Difference]: With dead ends: 11324 [2020-10-28 12:59:31,419 INFO L226 Difference]: Without dead ends: 5383 [2020-10-28 12:59:31,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:59:31,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2020-10-28 12:59:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 5003. [2020-10-28 12:59:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5003 states. [2020-10-28 12:59:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 5191 transitions. [2020-10-28 12:59:31,565 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 5191 transitions. Word has length 1762 [2020-10-28 12:59:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:31,567 INFO L481 AbstractCegarLoop]: Abstraction has 5003 states and 5191 transitions. [2020-10-28 12:59:31,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:59:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 5191 transitions. [2020-10-28 12:59:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1941 [2020-10-28 12:59:31,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:31,611 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2020-10-28 12:59:31,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:59:31,612 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:31,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:31,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1089114188, now seen corresponding path program 1 times [2020-10-28 12:59:31,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:31,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002800863] [2020-10-28 12:59:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:32,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:34,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:36,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:36,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1978 [2020-10-28 12:59:36,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:59:36,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-28 12:59:36,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:36,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:36,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:36,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1497 [2020-10-28 12:59:36,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:59:36,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:37,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:59:37,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:37,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:59:37,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:37,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:59:37,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:37,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:59:37,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:59:37,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:59:37,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:59:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:37,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:59:37,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:59:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:37,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:59:37,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:59:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:38,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-28 12:59:38,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:38,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:59:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:59:38,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:59:38,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:38,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:38,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:38,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:38,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:59:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:59:38,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:59:38,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:38,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:38,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:59:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:59:38,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:59:38,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:38,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:38,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:38,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:59:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 12:59:38,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:59:38,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-28 12:59:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1475 [2020-10-28 12:59:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:59:38,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 12:59:38,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:59:38,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:38,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1605 [2020-10-28 12:59:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 12:59:38,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:59:38,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-28 12:59:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:38,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1785 [2020-10-28 12:59:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:59:38,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:59:38,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-28 12:59:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10853 backedges. 1870 proven. 245 refuted. 0 times theorem prover too weak. 8738 trivial. 0 not checked. [2020-10-28 12:59:41,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002800863] [2020-10-28 12:59:41,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:41,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:59:41,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438830495] [2020-10-28 12:59:41,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:59:41,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:41,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:59:41,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:41,194 INFO L87 Difference]: Start difference. First operand 5003 states and 5191 transitions. Second operand 7 states. [2020-10-28 12:59:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:43,082 INFO L93 Difference]: Finished difference Result 9858 states and 10265 transitions. [2020-10-28 12:59:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:59:43,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1940 [2020-10-28 12:59:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:43,093 INFO L225 Difference]: With dead ends: 9858 [2020-10-28 12:59:43,093 INFO L226 Difference]: Without dead ends: 5039 [2020-10-28 12:59:43,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:59:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5039 states. [2020-10-28 12:59:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5039 to 5001. [2020-10-28 12:59:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5001 states. [2020-10-28 12:59:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5001 states to 5001 states and 5182 transitions. [2020-10-28 12:59:43,206 INFO L78 Accepts]: Start accepts. Automaton has 5001 states and 5182 transitions. Word has length 1940 [2020-10-28 12:59:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:43,208 INFO L481 AbstractCegarLoop]: Abstraction has 5001 states and 5182 transitions. [2020-10-28 12:59:43,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:59:43,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5001 states and 5182 transitions. [2020-10-28 12:59:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1977 [2020-10-28 12:59:43,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:43,268 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-28 12:59:43,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:59:43,268 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:43,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:43,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1404064132, now seen corresponding path program 1 times [2020-10-28 12:59:43,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:43,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25276771] [2020-10-28 12:59:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:44,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking...