/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:46:24,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:46:24,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:46:24,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:46:24,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:46:24,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:46:24,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:46:24,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:46:24,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:46:24,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:46:24,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:46:24,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:46:24,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:46:24,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:46:24,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:46:24,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:46:24,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:46:24,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:46:24,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:46:24,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:46:24,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:46:24,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:46:24,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:46:24,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:46:24,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:46:24,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:46:24,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:46:24,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:46:24,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:46:24,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:46:24,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:46:24,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:46:24,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:46:24,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:46:24,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:46:24,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:46:24,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:46:24,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:46:24,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:46:24,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:46:24,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:46:24,892 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 12:46:24,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:46:24,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:46:24,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:46:24,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:46:24,924 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:46:24,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:46:24,925 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:46:24,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:46:24,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:46:24,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:46:24,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:46:24,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:46:24,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:46:24,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:46:24,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:46:24,927 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:46:24,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:46:24,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:46:24,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:46:24,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:46:24,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:46:24,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:46:24,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:46:24,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:46:24,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:46:24,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:46:24,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:46:24,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:46:24,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:46:24,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:46:25,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:46:25,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:46:25,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:46:25,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:46:25,436 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:46:25,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label05.c [2020-10-28 12:46:25,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db02cccac/951bf105e5844885a15a79712d0ccdef/FLAG85ab027ff [2020-10-28 12:46:26,380 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:46:26,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label05.c [2020-10-28 12:46:26,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db02cccac/951bf105e5844885a15a79712d0ccdef/FLAG85ab027ff [2020-10-28 12:46:26,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db02cccac/951bf105e5844885a15a79712d0ccdef [2020-10-28 12:46:26,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:46:26,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:46:26,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:46:26,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:46:26,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:46:26,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:46:26" (1/1) ... [2020-10-28 12:46:26,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db91a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:26, skipping insertion in model container [2020-10-28 12:46:26,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:46:26" (1/1) ... [2020-10-28 12:46:26,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:46:26,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:46:27,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:46:27,304 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:46:27,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:46:27,559 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:46:27,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27 WrapperNode [2020-10-28 12:46:27,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:46:27,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:46:27,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:46:27,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:46:27,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27" (1/1) ... [2020-10-28 12:46:27,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27" (1/1) ... [2020-10-28 12:46:27,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27" (1/1) ... [2020-10-28 12:46:27,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27" (1/1) ... [2020-10-28 12:46:27,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27" (1/1) ... [2020-10-28 12:46:27,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27" (1/1) ... [2020-10-28 12:46:27,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27" (1/1) ... [2020-10-28 12:46:27,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:46:27,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:46:27,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:46:27,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:46:27,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27" (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 12:46:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:46:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:46:27,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:46:27,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:46:27,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:46:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:46:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:46:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:46:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:46:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:46:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:46:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:46:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:46:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:46:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:46:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:46:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:46:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:46:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:46:29,917 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:46:29,917 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:46:29,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:46:29 BoogieIcfgContainer [2020-10-28 12:46:29,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:46:29,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:46:29,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:46:29,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:46:29,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:46:26" (1/3) ... [2020-10-28 12:46:29,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c76b808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:46:29, skipping insertion in model container [2020-10-28 12:46:29,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:27" (2/3) ... [2020-10-28 12:46:29,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c76b808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:46:29, skipping insertion in model container [2020-10-28 12:46:29,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:46:29" (3/3) ... [2020-10-28 12:46:29,932 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label05.c [2020-10-28 12:46:29,946 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:46:29,953 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:46:29,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:46:30,008 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:46:30,008 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:46:30,009 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:46:30,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:46:30,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:46:30,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:46:30,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:46:30,009 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:46:30,035 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-28 12:46:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 12:46:30,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:30,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:30,049 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:30,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:30,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1855047248, now seen corresponding path program 1 times [2020-10-28 12:46:30,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:30,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101548788] [2020-10-28 12:46:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:30,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:30,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:30,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:46:30,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:30,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-28 12:46:31,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:31,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:46:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:46:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:46:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 12:46:31,279 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 12:46:31,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:31,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:31,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:31,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:31,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:46:31,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:31,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:31,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:31,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:46:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:31,347 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 12:46:31,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101548788] [2020-10-28 12:46:31,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:46:31,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:46:31,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534469263] [2020-10-28 12:46:31,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:46:31,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:31,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:46:31,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:46:31,378 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-28 12:46:31,562 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 12:46:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:34,351 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-28 12:46:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:46:34,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-28 12:46:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:34,370 INFO L225 Difference]: With dead ends: 703 [2020-10-28 12:46:34,370 INFO L226 Difference]: Without dead ends: 381 [2020-10-28 12:46:34,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:46:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-28 12:46:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-28 12:46:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-28 12:46:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-28 12:46:34,479 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 70 [2020-10-28 12:46:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:34,480 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-28 12:46:34,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:46:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-28 12:46:34,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 12:46:34,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:34,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:34,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:46:34,494 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:34,496 INFO L82 PathProgramCache]: Analyzing trace with hash 432634972, now seen corresponding path program 1 times [2020-10-28 12:46:34,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:34,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267464653] [2020-10-28 12:46:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:34,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:34,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:36,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:36,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 12:46:36,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:46:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1654 [2020-10-28 12:46:36,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:36,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:46:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:46:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:46:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:46:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:36,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:36,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:36,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:36,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:36,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:46:36,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:36,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:36,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:46:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:46:36,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:36,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:36,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:36,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:46:36,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 12:46:36,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:36,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:46:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:46:36,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267464653] [2020-10-28 12:46:36,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:46:36,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:46:36,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529462210] [2020-10-28 12:46:36,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:36,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:36,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:36,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:36,659 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 7 states. [2020-10-28 12:46:39,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:39,763 INFO L93 Difference]: Finished difference Result 1144 states and 1712 transitions. [2020-10-28 12:46:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:46:39,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-28 12:46:39,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:39,782 INFO L225 Difference]: With dead ends: 1144 [2020-10-28 12:46:39,782 INFO L226 Difference]: Without dead ends: 773 [2020-10-28 12:46:39,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:46:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-28 12:46:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 753. [2020-10-28 12:46:39,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-28 12:46:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 994 transitions. [2020-10-28 12:46:39,875 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 994 transitions. Word has length 139 [2020-10-28 12:46:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:39,876 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 994 transitions. [2020-10-28 12:46:39,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:46:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 994 transitions. [2020-10-28 12:46:39,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-28 12:46:39,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:39,892 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:39,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:46:39,893 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:39,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1142989636, now seen corresponding path program 1 times [2020-10-28 12:46:39,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:39,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159209985] [2020-10-28 12:46:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:40,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:44,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:44,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 12:46:44,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:46:44,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 12:46:44,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:44,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 12:46:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:46:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:45,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:45,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:45,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:45,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:46:45,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:45,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:46:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:46:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:45,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:45,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:45,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:46:45,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:45,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:46:45,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:45,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:46:45,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 12:46:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:45,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:45,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:45,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:46:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 12:46:45,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:45,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:46:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:46:45,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159209985] [2020-10-28 12:46:45,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:46:45,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:46:45,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459676989] [2020-10-28 12:46:45,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:45,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:45,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:45,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:45,617 INFO L87 Difference]: Start difference. First operand 753 states and 994 transitions. Second operand 7 states. [2020-10-28 12:46:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:48,517 INFO L93 Difference]: Finished difference Result 1912 states and 2593 transitions. [2020-10-28 12:46:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:46:48,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-28 12:46:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:48,535 INFO L225 Difference]: With dead ends: 1912 [2020-10-28 12:46:48,538 INFO L226 Difference]: Without dead ends: 969 [2020-10-28 12:46:48,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:46:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-10-28 12:46:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 937. [2020-10-28 12:46:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-28 12:46:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1065 transitions. [2020-10-28 12:46:48,590 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1065 transitions. Word has length 226 [2020-10-28 12:46:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:48,591 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1065 transitions. [2020-10-28 12:46:48,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:46:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1065 transitions. [2020-10-28 12:46:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 12:46:48,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:48,595 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:48,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:46:48,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:48,596 INFO L82 PathProgramCache]: Analyzing trace with hash 501843992, now seen corresponding path program 1 times [2020-10-28 12:46:48,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:48,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470873759] [2020-10-28 12:46:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:48,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:53,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:53,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 12:46:53,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:46:53,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 12:46:53,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:53,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:46:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:46:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:46:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:53,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:53,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:53,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:53,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:46:53,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:53,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:46:53,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:53,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:54,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:54,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:46:54,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:54,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-28 12:46:54,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:54,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:46:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 12:46:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:54,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:54,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:54,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:46:54,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:54,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:46:54,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:54,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:46:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:46:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:46:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 124 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:46:54,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470873759] [2020-10-28 12:46:54,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:46:54,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:46:54,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111795408] [2020-10-28 12:46:54,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:54,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:54,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:54,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:54,486 INFO L87 Difference]: Start difference. First operand 937 states and 1065 transitions. Second operand 7 states. [2020-10-28 12:46:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:57,176 INFO L93 Difference]: Finished difference Result 2820 states and 3242 transitions. [2020-10-28 12:46:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:46:57,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-28 12:46:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:57,188 INFO L225 Difference]: With dead ends: 2820 [2020-10-28 12:46:57,188 INFO L226 Difference]: Without dead ends: 1889 [2020-10-28 12:46:57,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:46:57,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-10-28 12:46:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1691. [2020-10-28 12:46:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-10-28 12:46:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 1926 transitions. [2020-10-28 12:46:57,256 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 1926 transitions. Word has length 252 [2020-10-28 12:46:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:57,257 INFO L481 AbstractCegarLoop]: Abstraction has 1691 states and 1926 transitions. [2020-10-28 12:46:57,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:46:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 1926 transitions. [2020-10-28 12:46:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-28 12:46:57,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:57,263 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:57,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:46:57,264 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:57,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1850636728, now seen corresponding path program 1 times [2020-10-28 12:46:57,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:57,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159059301] [2020-10-28 12:46:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:57,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:02,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:02,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-28 12:47:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:47:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 12:47:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:02,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:47:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:47:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 12:47:02,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:47:02,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:02,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:02,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:02,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:47:02,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:02,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:02,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:02,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:47:02,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:47:02,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:02,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:02,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:02,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:47:02,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 12:47:02,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:02,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:47:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:47:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 12:47:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:02,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:02,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:47:02,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:02,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:47:02,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:02,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:02,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:02,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:47:02,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:02,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 124 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:47:03,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159059301] [2020-10-28 12:47:03,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:03,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:03,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563763777] [2020-10-28 12:47:03,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:03,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:03,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:03,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:03,147 INFO L87 Difference]: Start difference. First operand 1691 states and 1926 transitions. Second operand 7 states. [2020-10-28 12:47:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:05,472 INFO L93 Difference]: Finished difference Result 3216 states and 3690 transitions. [2020-10-28 12:47:05,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:47:05,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-10-28 12:47:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:05,483 INFO L225 Difference]: With dead ends: 3216 [2020-10-28 12:47:05,484 INFO L226 Difference]: Without dead ends: 1713 [2020-10-28 12:47:05,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:47:05,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2020-10-28 12:47:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1693. [2020-10-28 12:47:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1693 states. [2020-10-28 12:47:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 1927 transitions. [2020-10-28 12:47:05,559 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 1927 transitions. Word has length 276 [2020-10-28 12:47:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:05,560 INFO L481 AbstractCegarLoop]: Abstraction has 1693 states and 1927 transitions. [2020-10-28 12:47:05,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:05,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 1927 transitions. [2020-10-28 12:47:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-28 12:47:05,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:05,571 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:47:05,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:47:05,572 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:05,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:05,572 INFO L82 PathProgramCache]: Analyzing trace with hash -363568624, now seen corresponding path program 1 times [2020-10-28 12:47:05,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:05,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064212495] [2020-10-28 12:47:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:05,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:07,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:07,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-28 12:47:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:47:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2181 [2020-10-28 12:47:07,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:07,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:47:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:47:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:07,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:07,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:07,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:47:07,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:07,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:07,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:08,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:08,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:08,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:47:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:08,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:08,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:08,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:08,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:08,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:08,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:08,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:47:08,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:08,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:47:08,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:08,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:08,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:47:08,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:08,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:47:08,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:08,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:47:08,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 12:47:08,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064212495] [2020-10-28 12:47:08,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:08,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:08,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554543887] [2020-10-28 12:47:08,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:08,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:08,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:08,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:08,660 INFO L87 Difference]: Start difference. First operand 1693 states and 1927 transitions. Second operand 7 states. [2020-10-28 12:47:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:11,133 INFO L93 Difference]: Finished difference Result 3398 states and 3919 transitions. [2020-10-28 12:47:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:47:11,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-28 12:47:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:11,147 INFO L225 Difference]: With dead ends: 3398 [2020-10-28 12:47:11,147 INFO L226 Difference]: Without dead ends: 1893 [2020-10-28 12:47:11,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:47:11,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-10-28 12:47:11,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1695. [2020-10-28 12:47:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1695 states. [2020-10-28 12:47:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 1923 transitions. [2020-10-28 12:47:11,225 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 1923 transitions. Word has length 362 [2020-10-28 12:47:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:11,226 INFO L481 AbstractCegarLoop]: Abstraction has 1695 states and 1923 transitions. [2020-10-28 12:47:11,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 1923 transitions. [2020-10-28 12:47:11,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-28 12:47:11,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:11,234 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, 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, 2, 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] [2020-10-28 12:47:11,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:47:11,235 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:11,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:11,236 INFO L82 PathProgramCache]: Analyzing trace with hash -254833216, now seen corresponding path program 1 times [2020-10-28 12:47:11,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:11,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419880887] [2020-10-28 12:47:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:12,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:13,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:13,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-28 12:47:13,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:47:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2384 [2020-10-28 12:47:13,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:13,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:47:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:47:13,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:13,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:13,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:13,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:13,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:47:13,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:13,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:13,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:13,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:13,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:13,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:13,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:13,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:47:13,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:13,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:13,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:13,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:14,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:14,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 12:47:14,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:14,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:47:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:14,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:14,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:47:14,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:47:14,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:14,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:14,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:47:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 12:47:14,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419880887] [2020-10-28 12:47:14,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:14,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:14,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748336422] [2020-10-28 12:47:14,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:14,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:14,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:14,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:14,374 INFO L87 Difference]: Start difference. First operand 1695 states and 1923 transitions. Second operand 7 states. [2020-10-28 12:47:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:17,996 INFO L93 Difference]: Finished difference Result 4157 states and 4820 transitions. [2020-10-28 12:47:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:47:17,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 373 [2020-10-28 12:47:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:18,017 INFO L225 Difference]: With dead ends: 4157 [2020-10-28 12:47:18,017 INFO L226 Difference]: Without dead ends: 2650 [2020-10-28 12:47:18,023 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 12:47:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2020-10-28 12:47:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2447. [2020-10-28 12:47:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2447 states. [2020-10-28 12:47:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 2801 transitions. [2020-10-28 12:47:18,119 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 2801 transitions. Word has length 373 [2020-10-28 12:47:18,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:18,120 INFO L481 AbstractCegarLoop]: Abstraction has 2447 states and 2801 transitions. [2020-10-28 12:47:18,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:18,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 2801 transitions. [2020-10-28 12:47:18,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-28 12:47:18,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:18,128 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:47:18,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:47:18,131 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:18,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:18,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1076623424, now seen corresponding path program 1 times [2020-10-28 12:47:18,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:18,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655322764] [2020-10-28 12:47:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:23,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:23,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-28 12:47:23,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:47:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 12:47:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:23,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-28 12:47:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 12:47:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:23,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:23,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:23,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:47:23,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:23,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:23,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:23,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:23,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:23,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:23,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:23,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:47:23,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:23,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:47:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:23,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:23,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:23,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:47:23,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 12:47:23,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:23,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:47:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:23,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-28 12:47:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:23,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:23,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:23,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:47:23,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:47:23,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:23,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:23,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:47:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 297 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:47:24,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655322764] [2020-10-28 12:47:24,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:24,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:24,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236241962] [2020-10-28 12:47:24,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:24,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:24,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:24,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:24,055 INFO L87 Difference]: Start difference. First operand 2447 states and 2801 transitions. Second operand 7 states. [2020-10-28 12:47:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:27,021 INFO L93 Difference]: Finished difference Result 5080 states and 5940 transitions. [2020-10-28 12:47:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:47:27,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-28 12:47:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:27,039 INFO L225 Difference]: With dead ends: 5080 [2020-10-28 12:47:27,040 INFO L226 Difference]: Without dead ends: 2821 [2020-10-28 12:47:27,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:47:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2020-10-28 12:47:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 2635. [2020-10-28 12:47:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2635 states. [2020-10-28 12:47:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3002 transitions. [2020-10-28 12:47:27,126 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3002 transitions. Word has length 386 [2020-10-28 12:47:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:27,127 INFO L481 AbstractCegarLoop]: Abstraction has 2635 states and 3002 transitions. [2020-10-28 12:47:27,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3002 transitions. [2020-10-28 12:47:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-28 12:47:27,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:27,140 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, 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, 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] [2020-10-28 12:47:27,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:47:27,140 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:27,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1363690504, now seen corresponding path program 1 times [2020-10-28 12:47:27,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:27,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135097386] [2020-10-28 12:47:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:27,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:28,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:32,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:32,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:32,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-28 12:47:32,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:47:32,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 12:47:32,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:32,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:32,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:32,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:47:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-28 12:47:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:32,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:32,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:32,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:32,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:47:32,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:32,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:32,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:32,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:32,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:32,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:32,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:32,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:32,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:32,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:47:32,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:32,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:32,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:32,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:32,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:32,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:32,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:47:32,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:32,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:47:32,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:32,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:32,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:32,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:32,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 12:47:32,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:32,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 12:47:32,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:32,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-28 12:47:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 404 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 12:47:33,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135097386] [2020-10-28 12:47:33,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:33,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:33,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462769524] [2020-10-28 12:47:33,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:33,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:33,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:33,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:33,333 INFO L87 Difference]: Start difference. First operand 2635 states and 3002 transitions. Second operand 7 states. [2020-10-28 12:47:33,569 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 12:47:35,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:35,862 INFO L93 Difference]: Finished difference Result 5274 states and 6022 transitions. [2020-10-28 12:47:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:47:35,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 465 [2020-10-28 12:47:35,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:35,882 INFO L225 Difference]: With dead ends: 5274 [2020-10-28 12:47:35,882 INFO L226 Difference]: Without dead ends: 2827 [2020-10-28 12:47:35,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:47:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-10-28 12:47:35,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2817. [2020-10-28 12:47:35,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2817 states. [2020-10-28 12:47:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 3186 transitions. [2020-10-28 12:47:35,969 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 3186 transitions. Word has length 465 [2020-10-28 12:47:35,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:35,970 INFO L481 AbstractCegarLoop]: Abstraction has 2817 states and 3186 transitions. [2020-10-28 12:47:35,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:35,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 3186 transitions. [2020-10-28 12:47:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-28 12:47:35,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:35,975 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:47:35,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:47:35,976 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash 131664876, now seen corresponding path program 1 times [2020-10-28 12:47:35,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:35,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276616053] [2020-10-28 12:47:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:36,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:39,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:41,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-28 12:47:41,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:47:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 12:47:41,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:41,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:47:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:47:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 12:47:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:41,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:41,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:47:41,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:41,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:47:41,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:41,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:41,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:41,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:47:41,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:41,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:41,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:41,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:41,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:47:41,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:41,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:47:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:41,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:41,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:41,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:41,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:47:41,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:41,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:41,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:41,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:47:41,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:41,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:41,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:47:41,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:47:41,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:41,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:47:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 608 proven. 6 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-28 12:47:42,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276616053] [2020-10-28 12:47:42,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:42,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:42,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092006124] [2020-10-28 12:47:42,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:42,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:42,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:42,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:42,100 INFO L87 Difference]: Start difference. First operand 2817 states and 3186 transitions. Second operand 7 states. [2020-10-28 12:47:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:44,598 INFO L93 Difference]: Finished difference Result 5646 states and 6416 transitions. [2020-10-28 12:47:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:47:44,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 479 [2020-10-28 12:47:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:44,621 INFO L225 Difference]: With dead ends: 5646 [2020-10-28 12:47:44,622 INFO L226 Difference]: Without dead ends: 3017 [2020-10-28 12:47:44,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:47:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-10-28 12:47:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 3001. [2020-10-28 12:47:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3001 states. [2020-10-28 12:47:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3376 transitions. [2020-10-28 12:47:44,725 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3376 transitions. Word has length 479 [2020-10-28 12:47:44,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:44,726 INFO L481 AbstractCegarLoop]: Abstraction has 3001 states and 3376 transitions. [2020-10-28 12:47:44,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3376 transitions. [2020-10-28 12:47:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2020-10-28 12:47:44,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:44,735 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, 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, 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, 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] [2020-10-28 12:47:44,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:47:44,736 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:44,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1674557852, now seen corresponding path program 1 times [2020-10-28 12:47:44,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:44,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669183819] [2020-10-28 12:47:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:49,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:49,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-28 12:47:49,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:47:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4863 [2020-10-28 12:47:49,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:49,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-28 12:47:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:47:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:49,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:49,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:49,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:49,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:47:49,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:49,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:49,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:49,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:49,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:49,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:47:49,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:49,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:49,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:49,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:50,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:47:50,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:50,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:47:50,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:47:50,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 12:47:50,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:47:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:47:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:47:50,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:47:50,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:47:50,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 605 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-28 12:47:50,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669183819] [2020-10-28 12:47:50,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:50,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:50,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577434165] [2020-10-28 12:47:50,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:50,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:50,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:50,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:50,806 INFO L87 Difference]: Start difference. First operand 3001 states and 3376 transitions. Second operand 7 states. [2020-10-28 12:47:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:53,755 INFO L93 Difference]: Finished difference Result 6010 states and 6798 transitions. [2020-10-28 12:47:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:47:53,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 638 [2020-10-28 12:47:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:53,778 INFO L225 Difference]: With dead ends: 6010 [2020-10-28 12:47:53,778 INFO L226 Difference]: Without dead ends: 3197 [2020-10-28 12:47:53,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:47:53,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2020-10-28 12:47:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3189. [2020-10-28 12:47:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3189 states. [2020-10-28 12:47:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 3584 transitions. [2020-10-28 12:47:53,881 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 3584 transitions. Word has length 638 [2020-10-28 12:47:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:53,882 INFO L481 AbstractCegarLoop]: Abstraction has 3189 states and 3584 transitions. [2020-10-28 12:47:53,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 3584 transitions. [2020-10-28 12:47:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2020-10-28 12:47:53,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:53,895 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, 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, 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, 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] [2020-10-28 12:47:53,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:47:53,896 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:53,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash 89850632, now seen corresponding path program 1 times [2020-10-28 12:47:53,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:53,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36131948] [2020-10-28 12:47:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:54,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:57,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 676 [2020-10-28 12:47:59,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:47:59,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 12:47:59,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-28 12:47:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:47:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:59,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:59,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:59,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:47:59,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:59,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:59,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:47:59,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:59,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:59,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:47:59,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:59,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:59,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:59,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:59,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 12:47:59,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:59,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:47:59,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:59,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:59,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:47:59,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:59,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 12:47:59,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:59,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:59,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:47:59,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:00,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-28 12:48:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:00,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:00,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 659 proven. 72 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-28 12:48:00,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36131948] [2020-10-28 12:48:00,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:00,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:48:00,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107732846] [2020-10-28 12:48:00,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:48:00,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:00,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:48:00,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:48:00,384 INFO L87 Difference]: Start difference. First operand 3189 states and 3584 transitions. Second operand 7 states. [2020-10-28 12:48:03,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:03,155 INFO L93 Difference]: Finished difference Result 7492 states and 8609 transitions. [2020-10-28 12:48:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:48:03,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 656 [2020-10-28 12:48:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:03,180 INFO L225 Difference]: With dead ends: 7492 [2020-10-28 12:48:03,180 INFO L226 Difference]: Without dead ends: 4491 [2020-10-28 12:48:03,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:48:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2020-10-28 12:48:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 4301. [2020-10-28 12:48:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4301 states. [2020-10-28 12:48:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 4877 transitions. [2020-10-28 12:48:03,320 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 4877 transitions. Word has length 656 [2020-10-28 12:48:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:03,321 INFO L481 AbstractCegarLoop]: Abstraction has 4301 states and 4877 transitions. [2020-10-28 12:48:03,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:48:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 4877 transitions. [2020-10-28 12:48:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2020-10-28 12:48:03,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:03,329 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, 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, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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] [2020-10-28 12:48:03,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:48:03,330 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:03,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1445779248, now seen corresponding path program 1 times [2020-10-28 12:48:03,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:03,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389999652] [2020-10-28 12:48:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:03,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:07,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:07,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 699 [2020-10-28 12:48:07,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:48:07,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3912 [2020-10-28 12:48:07,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:07,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:07,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-28 12:48:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 12:48:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:07,550 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 12:48:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:07,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:07,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:07,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:48:07,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:07,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:07,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:07,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:07,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:07,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:07,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:07,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:48:07,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:07,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:07,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:07,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:48:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:07,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:07,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:07,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:48:07,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:07,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:07,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:07,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:07,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:07,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:48:07,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:07,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:07,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:07,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:48:07,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:07,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 12:48:07,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:07,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:07,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:48:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:07,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:48:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:08,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:08,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:48:08,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:48:08,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:08,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:48:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-28 12:48:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 760 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-28 12:48:08,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389999652] [2020-10-28 12:48:08,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:08,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:48:08,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525854157] [2020-10-28 12:48:08,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:48:08,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:08,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:48:08,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:48:08,598 INFO L87 Difference]: Start difference. First operand 4301 states and 4877 transitions. Second operand 7 states. [2020-10-28 12:48:08,738 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 12:48:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:11,881 INFO L93 Difference]: Finished difference Result 9724 states and 11205 transitions. [2020-10-28 12:48:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:48:11,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 679 [2020-10-28 12:48:11,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:11,922 INFO L225 Difference]: With dead ends: 9724 [2020-10-28 12:48:11,923 INFO L226 Difference]: Without dead ends: 5611 [2020-10-28 12:48:11,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:48:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2020-10-28 12:48:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 5047. [2020-10-28 12:48:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5047 states. [2020-10-28 12:48:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5047 states to 5047 states and 5816 transitions. [2020-10-28 12:48:12,081 INFO L78 Accepts]: Start accepts. Automaton has 5047 states and 5816 transitions. Word has length 679 [2020-10-28 12:48:12,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:12,082 INFO L481 AbstractCegarLoop]: Abstraction has 5047 states and 5816 transitions. [2020-10-28 12:48:12,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:48:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5047 states and 5816 transitions. [2020-10-28 12:48:12,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2020-10-28 12:48:12,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:12,096 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, 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, 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, 3, 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] [2020-10-28 12:48:12,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:48:12,096 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:12,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:12,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1143953452, now seen corresponding path program 1 times [2020-10-28 12:48:12,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:12,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070164461] [2020-10-28 12:48:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:12,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:16,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:16,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 759 [2020-10-28 12:48:16,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:48:16,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4635 [2020-10-28 12:48:16,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:16,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-28 12:48:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:48:16,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:17,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:17,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:17,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:17,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:17,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:48:17,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:17,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:17,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:17,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:17,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:17,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:48:17,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:17,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:17,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:17,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:17,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:17,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:48:17,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:17,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:17,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:17,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:17,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:17,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:48:17,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:17,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:17,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:17,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:48:17,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:17,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:48:17,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:17,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:17,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:17,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:17,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:17,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:48:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:17,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:17,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:17,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:48:17,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:17,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:48:17,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:17,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 12:48:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:17,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:48:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:17,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:17,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:48:17,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:17,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 12:48:17,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:17,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:48:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 742 proven. 2 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2020-10-28 12:48:17,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070164461] [2020-10-28 12:48:17,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:17,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:48:17,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668923318] [2020-10-28 12:48:17,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:48:17,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:17,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:48:17,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:48:17,977 INFO L87 Difference]: Start difference. First operand 5047 states and 5816 transitions. Second operand 7 states. [2020-10-28 12:48:21,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:21,967 INFO L93 Difference]: Finished difference Result 11209 states and 12923 transitions. [2020-10-28 12:48:21,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:48:21,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 737 [2020-10-28 12:48:21,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:21,990 INFO L225 Difference]: With dead ends: 11209 [2020-10-28 12:48:21,990 INFO L226 Difference]: Without dead ends: 6350 [2020-10-28 12:48:22,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:48:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2020-10-28 12:48:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 5967. [2020-10-28 12:48:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5967 states. [2020-10-28 12:48:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5967 states to 5967 states and 6836 transitions. [2020-10-28 12:48:22,140 INFO L78 Accepts]: Start accepts. Automaton has 5967 states and 6836 transitions. Word has length 737 [2020-10-28 12:48:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:22,141 INFO L481 AbstractCegarLoop]: Abstraction has 5967 states and 6836 transitions. [2020-10-28 12:48:22,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:48:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5967 states and 6836 transitions. [2020-10-28 12:48:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2020-10-28 12:48:22,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:22,154 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, 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, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 12:48:22,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:48:22,155 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:22,155 INFO L82 PathProgramCache]: Analyzing trace with hash 508679192, now seen corresponding path program 2 times [2020-10-28 12:48:22,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:22,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433004379] [2020-10-28 12:48:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:26,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:27,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:27,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 777 [2020-10-28 12:48:27,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:48:27,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 12:48:27,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:27,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:48:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-28 12:48:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 12:48:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:27,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:27,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:27,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:27,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:48:27,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:27,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:27,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:27,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:27,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:27,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:48:27,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:27,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:27,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:27,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:27,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:27,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:27,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:48:27,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:27,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:27,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:27,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:27,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:27,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:27,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:27,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:48:27,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:27,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:27,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:27,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:27,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:48:27,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 12:48:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:27,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:48:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:27,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:48:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:27,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:27,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:27,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:48:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:48:27,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:27,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:48:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:28,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-28 12:48:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:28,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:28,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:48:28,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:48:28,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:28,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:48:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1854 backedges. 757 proven. 4 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2020-10-28 12:48:28,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433004379] [2020-10-28 12:48:28,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:28,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:48:28,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074701877] [2020-10-28 12:48:28,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:48:28,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:28,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:48:28,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:48:28,593 INFO L87 Difference]: Start difference. First operand 5967 states and 6836 transitions. Second operand 8 states. [2020-10-28 12:48:32,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:32,240 INFO L93 Difference]: Finished difference Result 11942 states and 13697 transitions. [2020-10-28 12:48:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:48:32,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 755 [2020-10-28 12:48:32,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:32,263 INFO L225 Difference]: With dead ends: 11942 [2020-10-28 12:48:32,263 INFO L226 Difference]: Without dead ends: 6163 [2020-10-28 12:48:32,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:48:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6163 states. [2020-10-28 12:48:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6163 to 6147. [2020-10-28 12:48:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6147 states. [2020-10-28 12:48:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 6973 transitions. [2020-10-28 12:48:32,450 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 6973 transitions. Word has length 755 [2020-10-28 12:48:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:32,451 INFO L481 AbstractCegarLoop]: Abstraction has 6147 states and 6973 transitions. [2020-10-28 12:48:32,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:48:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 6973 transitions. [2020-10-28 12:48:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2020-10-28 12:48:32,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:32,472 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, 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, 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, 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 12:48:32,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:48:32,472 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:32,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1146763668, now seen corresponding path program 1 times [2020-10-28 12:48:32,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:32,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066172458] [2020-10-28 12:48:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:33,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:37,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:37,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-28 12:48:37,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:48:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-28 12:48:37,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:37,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-28 12:48:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-28 12:48:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:37,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:37,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:37,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:48:37,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:37,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:37,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:37,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:37,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:37,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:37,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:48:37,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:37,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:38,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:38,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:38,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:38,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:38,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:38,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:48:38,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:38,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:38,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:38,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:38,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:38,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:38,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:38,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:48:38,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:38,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:38,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:38,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:38,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:48:38,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:48:38,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:38,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:38,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:38,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:48:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:38,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:38,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:48:38,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:48:38,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:38,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 12:48:38,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:38,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:48:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:38,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:38,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 12:48:38,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:38,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 12:48:38,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:38,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-28 12:48:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 970 proven. 2 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2020-10-28 12:48:39,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066172458] [2020-10-28 12:48:39,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:39,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:48:39,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396510265] [2020-10-28 12:48:39,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:48:39,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:39,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:48:39,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:48:39,203 INFO L87 Difference]: Start difference. First operand 6147 states and 6973 transitions. Second operand 7 states. [2020-10-28 12:48:41,256 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:48:42,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:42,418 INFO L93 Difference]: Finished difference Result 13046 states and 14991 transitions. [2020-10-28 12:48:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:48:42,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 840 [2020-10-28 12:48:42,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:42,444 INFO L225 Difference]: With dead ends: 13046 [2020-10-28 12:48:42,444 INFO L226 Difference]: Without dead ends: 6903 [2020-10-28 12:48:42,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:48:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6903 states. [2020-10-28 12:48:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6903 to 6891. [2020-10-28 12:48:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6891 states. [2020-10-28 12:48:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6891 states to 6891 states and 7794 transitions. [2020-10-28 12:48:42,609 INFO L78 Accepts]: Start accepts. Automaton has 6891 states and 7794 transitions. Word has length 840 [2020-10-28 12:48:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:42,610 INFO L481 AbstractCegarLoop]: Abstraction has 6891 states and 7794 transitions. [2020-10-28 12:48:42,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:48:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6891 states and 7794 transitions. [2020-10-28 12:48:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2020-10-28 12:48:42,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:42,625 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, 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, 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, 4, 3, 3, 3, 3, 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] [2020-10-28 12:48:42,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:48:42,625 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:42,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:42,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1075825116, now seen corresponding path program 1 times [2020-10-28 12:48:42,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:42,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528785463] [2020-10-28 12:48:42,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:42,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:43,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:47,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:47,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 878 [2020-10-28 12:48:47,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:48:47,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-28 12:48:47,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:47,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 806 [2020-10-28 12:48:47,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:48:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:48,056 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 12:48:48,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:48,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:48,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:48,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:48:48,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:48,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:48,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:48,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:48,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:48,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:48:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:48,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:48,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:48,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:48,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:48,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:48:48,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:48,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:48,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:48,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:48,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:48,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:48,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:48,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:48,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:48:48,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:48,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:48,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:48,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:48,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:48,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:48:48,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:48:48,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:48,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:48:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:48,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:48,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:48:48,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:48:48,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:48,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:48:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:48,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:48,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:48,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:48:48,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:48:48,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:48,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:48,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:48:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:48,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:48,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:48:48,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 12:48:48,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:48,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:48:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:48:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2406 backedges. 445 proven. 7 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2020-10-28 12:48:48,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528785463] [2020-10-28 12:48:48,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:48,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:48:48,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872548992] [2020-10-28 12:48:48,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:48:48,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:48,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:48:48,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:48:48,959 INFO L87 Difference]: Start difference. First operand 6891 states and 7794 transitions. Second operand 5 states. [2020-10-28 12:48:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:51,406 INFO L93 Difference]: Finished difference Result 13972 states and 15859 transitions. [2020-10-28 12:48:51,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:48:51,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 854 [2020-10-28 12:48:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:51,438 INFO L225 Difference]: With dead ends: 13972 [2020-10-28 12:48:51,439 INFO L226 Difference]: Without dead ends: 7067 [2020-10-28 12:48:51,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:48:51,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7067 states. [2020-10-28 12:48:51,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7067 to 6877. [2020-10-28 12:48:51,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6877 states. [2020-10-28 12:48:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6877 states to 6877 states and 7609 transitions. [2020-10-28 12:48:51,679 INFO L78 Accepts]: Start accepts. Automaton has 6877 states and 7609 transitions. Word has length 854 [2020-10-28 12:48:51,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:51,680 INFO L481 AbstractCegarLoop]: Abstraction has 6877 states and 7609 transitions. [2020-10-28 12:48:51,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:48:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6877 states and 7609 transitions. [2020-10-28 12:48:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2020-10-28 12:48:51,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:51,696 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, 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, 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, 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, 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] [2020-10-28 12:48:51,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:48:51,696 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:51,697 INFO L82 PathProgramCache]: Analyzing trace with hash -851436004, now seen corresponding path program 1 times [2020-10-28 12:48:51,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:51,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298395675] [2020-10-28 12:48:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:51,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-28 12:48:52,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-10-28 12:48:52,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-28 12:48:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:48:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:52,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:48:52,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:52,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:52,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:52,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:48:52,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:53,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:53,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:53,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:53,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:48:53,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:53,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:53,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:53,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:53,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:53,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:48:53,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:53,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:53,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:53,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:53,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:48:53,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:53,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:48:53,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:53,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:48:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:53,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:53,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:48:53,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:53,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:48:53,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:53,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:48:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:53,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:53,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:53,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:48:53,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:48:53,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:53,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:53,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:48:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:53,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:53,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:48:53,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:48:53,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:53,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:53,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 12:48:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2472 backedges. 445 proven. 7 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2020-10-28 12:48:53,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298395675] [2020-10-28 12:48:53,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:53,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:48:53,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089756376] [2020-10-28 12:48:53,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:48:53,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:53,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:48:53,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:48:53,923 INFO L87 Difference]: Start difference. First operand 6877 states and 7609 transitions. Second operand 5 states. [2020-10-28 12:48:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:55,869 INFO L93 Difference]: Finished difference Result 14490 states and 16255 transitions. [2020-10-28 12:48:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:48:55,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 919 [2020-10-28 12:48:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:55,894 INFO L225 Difference]: With dead ends: 14490 [2020-10-28 12:48:55,894 INFO L226 Difference]: Without dead ends: 7615 [2020-10-28 12:48:55,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:48:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7615 states. [2020-10-28 12:48:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7615 to 7609. [2020-10-28 12:48:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7609 states. [2020-10-28 12:48:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7609 states to 7609 states and 8396 transitions. [2020-10-28 12:48:56,181 INFO L78 Accepts]: Start accepts. Automaton has 7609 states and 8396 transitions. Word has length 919 [2020-10-28 12:48:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:56,183 INFO L481 AbstractCegarLoop]: Abstraction has 7609 states and 8396 transitions. [2020-10-28 12:48:56,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:48:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7609 states and 8396 transitions. [2020-10-28 12:48:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-28 12:48:56,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:56,204 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, 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, 7, 7, 7, 7, 7, 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, 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, 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 12:48:56,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:48:56,205 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:56,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:56,205 INFO L82 PathProgramCache]: Analyzing trace with hash -612610236, now seen corresponding path program 1 times [2020-10-28 12:48:56,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:56,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193359948] [2020-10-28 12:48:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:56,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:01,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:01,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1031 [2020-10-28 12:49:01,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:49:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-28 12:49:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:01,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:49:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-28 12:49:01,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-28 12:49:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:01,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:49:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:01,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:01,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:49:01,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:49:01,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:01,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:01,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:49:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:01,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:01,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:01,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:49:01,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:49:01,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:01,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:01,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:49:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:01,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:01,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:49:01,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:01,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:49:01,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:01,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:49:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:01,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:01,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:49:01,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:49:01,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:01,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:01,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:49:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:02,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:02,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:02,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:49:02,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:02,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:49:02,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:02,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:02,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:49:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:02,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:49:02,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:49:02,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:02,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:02,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:49:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:02,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:02,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:49:02,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:49:02,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:02,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:49:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:49:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:49:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:02,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:02,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:49:02,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 12:49:02,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:02,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:49:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:49:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:02,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:49:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:02,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:02,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:49:02,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:49:02,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:02,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:49:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 1670 proven. 6 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-28 12:49:03,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193359948] [2020-10-28 12:49:03,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:49:03,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 12:49:03,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032517529] [2020-10-28 12:49:03,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 12:49:03,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:49:03,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 12:49:03,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:49:03,210 INFO L87 Difference]: Start difference. First operand 7609 states and 8396 transitions. Second operand 9 states. [2020-10-28 12:49:07,085 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 12:49:07,557 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 12:49:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:49:07,676 INFO L93 Difference]: Finished difference Result 16700 states and 18622 transitions. [2020-10-28 12:49:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 12:49:07,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1005 [2020-10-28 12:49:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:49:07,701 INFO L225 Difference]: With dead ends: 16700 [2020-10-28 12:49:07,702 INFO L226 Difference]: Without dead ends: 9281 [2020-10-28 12:49:07,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-28 12:49:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9281 states. [2020-10-28 12:49:07,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9281 to 8725. [2020-10-28 12:49:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8725 states. [2020-10-28 12:49:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8725 states to 8725 states and 9791 transitions. [2020-10-28 12:49:07,878 INFO L78 Accepts]: Start accepts. Automaton has 8725 states and 9791 transitions. Word has length 1005 [2020-10-28 12:49:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:49:07,879 INFO L481 AbstractCegarLoop]: Abstraction has 8725 states and 9791 transitions. [2020-10-28 12:49:07,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 12:49:07,879 INFO L276 IsEmpty]: Start isEmpty. Operand 8725 states and 9791 transitions. [2020-10-28 12:49:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1166 [2020-10-28 12:49:07,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:49:07,901 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, 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, 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, 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, 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] [2020-10-28 12:49:07,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:49:07,901 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:49:07,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:49:07,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1697599668, now seen corresponding path program 1 times [2020-10-28 12:49:07,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:49:07,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311807270] [2020-10-28 12:49:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:49:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:08,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:08,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:13,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:13,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1191 [2020-10-28 12:49:13,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:49:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-28 12:49:13,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:13,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-28 12:49:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:49:13,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:13,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:49:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:13,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:13,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:49:13,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:13,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:49:13,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:13,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:13,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:13,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:49:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:13,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:13,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:49:13,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:49:13,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:13,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:49:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:13,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:13,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:49:13,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:49:13,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:13,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:49:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:13,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:13,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:13,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:49:13,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:49:13,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:13,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:49:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:13,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:13,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:13,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:49:13,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:49:13,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:13,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:13,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:13,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:49:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:13,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:13,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:13,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 12:49:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:49:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:13,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:13,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-28 12:49:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:13,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:13,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 12:49:13,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:13,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:49:13,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:13,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:49:13,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:13,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 12:49:13,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-28 12:49:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:14,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:14,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:49:14,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:14,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 12:49:14,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:14,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:49:14,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-28 12:49:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:14,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:14,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:49:14,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:49:14,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:14,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:49:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 1357 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-28 12:49:15,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311807270] [2020-10-28 12:49:15,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:49:15,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:49:15,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519982084] [2020-10-28 12:49:15,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:49:15,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:49:15,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:49:15,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:49:15,055 INFO L87 Difference]: Start difference. First operand 8725 states and 9791 transitions. Second operand 7 states. [2020-10-28 12:49:15,921 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 12:49:18,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:49:18,012 INFO L93 Difference]: Finished difference Result 17086 states and 19173 transitions. [2020-10-28 12:49:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:49:18,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1165 [2020-10-28 12:49:18,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:49:18,036 INFO L225 Difference]: With dead ends: 17086 [2020-10-28 12:49:18,036 INFO L226 Difference]: Without dead ends: 8359 [2020-10-28 12:49:18,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:49:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8359 states. [2020-10-28 12:49:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8359 to 7983. [2020-10-28 12:49:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7983 states. [2020-10-28 12:49:18,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7983 states to 7983 states and 8658 transitions. [2020-10-28 12:49:18,204 INFO L78 Accepts]: Start accepts. Automaton has 7983 states and 8658 transitions. Word has length 1165 [2020-10-28 12:49:18,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:49:18,206 INFO L481 AbstractCegarLoop]: Abstraction has 7983 states and 8658 transitions. [2020-10-28 12:49:18,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:49:18,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7983 states and 8658 transitions. [2020-10-28 12:49:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2020-10-28 12:49:18,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:49:18,235 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, 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, 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, 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] [2020-10-28 12:49:18,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:49:18,235 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:49:18,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:49:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1199415200, now seen corresponding path program 1 times [2020-10-28 12:49:18,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:49:18,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769803309] [2020-10-28 12:49:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:49:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:23,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:23,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1510 [2020-10-28 12:49:23,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:49:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 12:49:23,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:23,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:49:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-28 12:49:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-28 12:49:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:23,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:49:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:23,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:23,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:23,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:49:23,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:49:23,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:23,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:23,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:23,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:49:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:23,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:49:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:49:23,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:23,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:49:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:23,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:23,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:23,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:49:23,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:23,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:49:23,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:23,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:23,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:23,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:49:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:49:24,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:24,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:49:24,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:24,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:24,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:49:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:49:24,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:49:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:49:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:49:24,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:24,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:49:24,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:24,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:49:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:49:24,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:24,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:49:24,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:24,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:24,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:49:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:49:24,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:49:24,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:24,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:24,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:49:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:49:24,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:49:24,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:24,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:24,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:49:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:49:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:49:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:49:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:49:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:49:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:49:24,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:24,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:49:24,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:24,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:24,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 12:49:24,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:49:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:49:24,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:49:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:24,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 12:49:24,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6534 backedges. 2759 proven. 6 refuted. 0 times theorem prover too weak. 3769 trivial. 0 not checked. [2020-10-28 12:49:26,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769803309] [2020-10-28 12:49:26,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:49:26,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:49:26,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309785588] [2020-10-28 12:49:26,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:49:26,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:49:26,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:49:26,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:49:26,469 INFO L87 Difference]: Start difference. First operand 7983 states and 8658 transitions. Second operand 7 states. [2020-10-28 12:49:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:49:28,545 INFO L93 Difference]: Finished difference Result 16712 states and 18128 transitions. [2020-10-28 12:49:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:49:28,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1478 [2020-10-28 12:49:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:49:28,569 INFO L225 Difference]: With dead ends: 16712 [2020-10-28 12:49:28,569 INFO L226 Difference]: Without dead ends: 8919 [2020-10-28 12:49:28,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:49:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8919 states. [2020-10-28 12:49:28,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8919 to 8171. [2020-10-28 12:49:28,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8171 states. [2020-10-28 12:49:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 8871 transitions. [2020-10-28 12:49:28,756 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 8871 transitions. Word has length 1478 [2020-10-28 12:49:28,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:49:28,759 INFO L481 AbstractCegarLoop]: Abstraction has 8171 states and 8871 transitions. [2020-10-28 12:49:28,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:49:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 8871 transitions. [2020-10-28 12:49:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1490 [2020-10-28 12:49:28,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:49:28,788 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-28 12:49:28,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:49:28,789 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:49:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:49:28,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1923216008, now seen corresponding path program 1 times [2020-10-28 12:49:28,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:49:28,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21823962] [2020-10-28 12:49:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:49:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:34,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:34,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1521 [2020-10-28 12:49:34,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:49:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 12:49:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:34,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:49:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-28 12:49:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 317 [2020-10-28 12:49:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:49:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:34,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:34,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:49:34,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:49:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:34,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:49:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:34,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:34,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:34,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:49:34,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:34,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:49:34,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:34,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:34,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:34,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:34,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:34,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:49:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:34,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:34,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:34,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:49:34,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:49:34,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:34,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:34,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:49:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:34,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:34,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:49:34,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:49:34,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:34,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:34,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:34,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:34,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:49:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:34,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:49:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:49:34,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:34,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:34,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:49:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:34,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:34,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:49:34,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:49:34,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:34,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:49:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:34,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:34,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:49:34,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:49:34,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:34,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:34,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:34,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:49:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:34,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:34,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:34,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:49:34,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:49:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:34,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:34,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:35,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:49:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:35,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:35,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:49:35,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:35,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:49:35,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:35,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:49:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:35,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:35,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:35,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:49:35,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:35,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:49:35,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:35,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:35,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:49:35,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:49:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:49:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:35,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:35,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:49:35,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 12:49:35,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:35,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 12:49:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:49:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:35,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:35,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:49:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:49:35,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:35,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:49:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6578 backedges. 2792 proven. 129 refuted. 0 times theorem prover too weak. 3657 trivial. 0 not checked. [2020-10-28 12:49:38,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21823962] [2020-10-28 12:49:38,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:49:38,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:49:38,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729658997] [2020-10-28 12:49:38,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:49:38,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:49:38,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:49:38,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:49:38,219 INFO L87 Difference]: Start difference. First operand 8171 states and 8871 transitions. Second operand 8 states. [2020-10-28 12:49:40,528 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:49:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:49:40,796 INFO L93 Difference]: Finished difference Result 16354 states and 17786 transitions. [2020-10-28 12:49:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:49:40,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1489 [2020-10-28 12:49:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:49:40,842 INFO L225 Difference]: With dead ends: 16354 [2020-10-28 12:49:40,842 INFO L226 Difference]: Without dead ends: 8373 [2020-10-28 12:49:40,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:49:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8373 states. [2020-10-28 12:49:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8373 to 8353. [2020-10-28 12:49:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8353 states. [2020-10-28 12:49:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 9061 transitions. [2020-10-28 12:49:41,005 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 9061 transitions. Word has length 1489 [2020-10-28 12:49:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:49:41,007 INFO L481 AbstractCegarLoop]: Abstraction has 8353 states and 9061 transitions. [2020-10-28 12:49:41,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:49:41,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 9061 transitions. [2020-10-28 12:49:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1513 [2020-10-28 12:49:41,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:49:41,036 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, 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, 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, 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, 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] [2020-10-28 12:49:41,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:49:41,037 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:49:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:49:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1766748580, now seen corresponding path program 1 times [2020-10-28 12:49:41,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:49:41,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875453781] [2020-10-28 12:49:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:49:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:43,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:45,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:45,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1544 [2020-10-28 12:49:45,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:49:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4349 [2020-10-28 12:49:45,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:45,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1472 [2020-10-28 12:49:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:49:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:45,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:49:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:45,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:49:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:49:45,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:45,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:49:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:45,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:45,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:45,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:49:45,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:49:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:45,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:49:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:45,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:45,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:49:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:49:45,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:45,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:49:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:46,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:46,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:49:46,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:49:46,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:46,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:46,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:49:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:46,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:46,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:49:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:49:46,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:46,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:49:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:46,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:46,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:49:46,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:49:46,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:46,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:46,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:49:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:46,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:46,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:49:46,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:49:46,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:46,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:46,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:49:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:46,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:46,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:49:46,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:49:46,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:46,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:49:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:46,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:46,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:49:46,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:49:46,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:46,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:46,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:46,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:46,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:49:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:46,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:46,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:49:46,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:46,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:49:46,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:46,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:46,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:49:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:46,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:46,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:49:46,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:46,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:49:46,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:46,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:46,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:46,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:46,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:49:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:46,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:46,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 12:49:46,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 12:49:46,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:46,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:49:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:46,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 12:49:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6657 backedges. 701 proven. 11 refuted. 0 times theorem prover too weak. 5945 trivial. 0 not checked. [2020-10-28 12:49:47,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875453781] [2020-10-28 12:49:47,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:49:47,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:49:47,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002423585] [2020-10-28 12:49:47,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:49:47,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:49:47,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:49:47,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:49:47,923 INFO L87 Difference]: Start difference. First operand 8353 states and 9061 transitions. Second operand 5 states. [2020-10-28 12:49:49,094 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 12:49:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:49:50,277 INFO L93 Difference]: Finished difference Result 16892 states and 18367 transitions. [2020-10-28 12:49:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:49:50,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1512 [2020-10-28 12:49:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:49:50,302 INFO L225 Difference]: With dead ends: 16892 [2020-10-28 12:49:50,302 INFO L226 Difference]: Without dead ends: 8545 [2020-10-28 12:49:50,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:49:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2020-10-28 12:49:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 8537. [2020-10-28 12:49:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8537 states. [2020-10-28 12:49:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8537 states to 8537 states and 9206 transitions. [2020-10-28 12:49:50,457 INFO L78 Accepts]: Start accepts. Automaton has 8537 states and 9206 transitions. Word has length 1512 [2020-10-28 12:49:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:49:50,459 INFO L481 AbstractCegarLoop]: Abstraction has 8537 states and 9206 transitions. [2020-10-28 12:49:50,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:49:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 8537 states and 9206 transitions. [2020-10-28 12:49:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2020-10-28 12:49:50,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:49:50,488 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 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, 8, 7, 7, 7, 7, 7, 7, 6, 5, 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, 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] [2020-10-28 12:49:50,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:49:50,488 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:49:50,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:49:50,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1409842280, now seen corresponding path program 1 times [2020-10-28 12:49:50,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:49:50,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650747109] [2020-10-28 12:49:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:49:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:53,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:54,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:55,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:55,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1623 [2020-10-28 12:49:55,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:49:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-28 12:49:55,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:55,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:55,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:55,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-28 12:49:55,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:49:55,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:49:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:49:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:49:56,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:49:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:49:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:49:56,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:49:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:49:56,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:49:56,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:49:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:49:56,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:49:56,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:49:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:49:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:49:56,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:49:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:49:56,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:49:56,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:49:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:49:56,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:49:56,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:49:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:49:56,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:49:56,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:49:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:49:56,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:49:56,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:49:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:49:56,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:49:56,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:49:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:49:56,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:49:56,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:49:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:56,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 12:49:56,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:49:56,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:56,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:49:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:49:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-28 12:49:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:57,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:57,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:49:57,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:57,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 12:49:57,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:57,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:57,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 12:49:57,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7749 backedges. 1959 proven. 2 refuted. 0 times theorem prover too weak. 5788 trivial. 0 not checked. [2020-10-28 12:49:58,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650747109] [2020-10-28 12:49:58,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:49:58,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:49:58,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485828027] [2020-10-28 12:49:58,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:49:58,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:49:58,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:49:58,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:49:58,570 INFO L87 Difference]: Start difference. First operand 8537 states and 9206 transitions. Second operand 7 states. [2020-10-28 12:49:59,795 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 12:50:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:50:01,120 INFO L93 Difference]: Finished difference Result 18381 states and 19925 transitions. [2020-10-28 12:50:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:50:01,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1589 [2020-10-28 12:50:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:50:01,123 INFO L225 Difference]: With dead ends: 18381 [2020-10-28 12:50:01,123 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 12:50:01,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:50:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 12:50:01,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 12:50:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 12:50:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 12:50:01,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1589 [2020-10-28 12:50:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:50:01,142 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 12:50:01,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:50:01,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 12:50:01,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 12:50:01,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:50:01,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 12:50:01,921 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 230