/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/Problem18_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:51:15,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:51:15,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:51:15,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:51:15,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:51:15,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:51:15,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:51:15,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:51:15,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:51:15,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:51:15,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:51:15,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:51:15,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:51:15,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:51:15,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:51:15,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:51:15,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:51:15,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:51:15,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:51:15,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:51:15,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:51:15,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:51:15,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:51:15,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:51:15,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:51:15,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:51:15,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:51:15,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:51:15,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:51:15,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:51:15,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:51:15,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:51:15,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:51:15,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:51:15,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:51:15,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:51:15,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:51:15,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:51:15,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:51:15,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:51:15,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:51:15,925 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 13:51:15,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:51:15,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:51:15,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:51:15,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:51:15,958 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:51:15,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:51:15,959 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:51:15,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:51:15,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:51:15,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:51:15,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:51:15,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:51:15,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:51:15,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:51:15,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:51:15,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:51:15,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:51:15,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:51:15,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:51:15,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:51:15,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:51:15,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:51:15,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:51:15,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:51:15,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:51:15,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:51:15,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:51:15,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:51:15,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:51:15,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:51:16,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:51:16,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:51:16,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:51:16,493 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:51:16,494 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:51:16,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19.c [2020-10-28 13:51:16,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf134d96/d11ebc3aabec4a38854b63e0be8226e4/FLAGe16e13e75 [2020-10-28 13:51:17,526 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:51:17,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label19.c [2020-10-28 13:51:17,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf134d96/d11ebc3aabec4a38854b63e0be8226e4/FLAGe16e13e75 [2020-10-28 13:51:17,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bf134d96/d11ebc3aabec4a38854b63e0be8226e4 [2020-10-28 13:51:17,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:51:17,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:51:17,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:51:17,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:51:17,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:51:17,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:51:17" (1/1) ... [2020-10-28 13:51:17,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5540fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:17, skipping insertion in model container [2020-10-28 13:51:17,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:51:17" (1/1) ... [2020-10-28 13:51:17,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:51:17,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:51:19,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:51:19,127 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:51:19,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:51:19,659 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:51:19,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19 WrapperNode [2020-10-28 13:51:19,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:51:19,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:51:19,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:51:19,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:51:19,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19" (1/1) ... [2020-10-28 13:51:19,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19" (1/1) ... [2020-10-28 13:51:19,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19" (1/1) ... [2020-10-28 13:51:19,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19" (1/1) ... [2020-10-28 13:51:19,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19" (1/1) ... [2020-10-28 13:51:19,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19" (1/1) ... [2020-10-28 13:51:19,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19" (1/1) ... [2020-10-28 13:51:20,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:51:20,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:51:20,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:51:20,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:51:20,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19" (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 13:51:20,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:51:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:51:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:51:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:51:20,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:51:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:51:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:51:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:51:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:51:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:51:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:51:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:51:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:51:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:51:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:51:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:51:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:51:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:51:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:51:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:51:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:51:20,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:51:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:51:24,250 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:51:24,250 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:51:24,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:51:24 BoogieIcfgContainer [2020-10-28 13:51:24,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:51:24,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:51:24,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:51:24,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:51:24,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:51:17" (1/3) ... [2020-10-28 13:51:24,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286b492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:51:24, skipping insertion in model container [2020-10-28 13:51:24,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:19" (2/3) ... [2020-10-28 13:51:24,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286b492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:51:24, skipping insertion in model container [2020-10-28 13:51:24,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:51:24" (3/3) ... [2020-10-28 13:51:24,264 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label19.c [2020-10-28 13:51:24,277 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:51:24,283 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:51:24,297 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:51:24,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:51:24,330 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:51:24,330 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:51:24,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:51:24,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:51:24,331 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:51:24,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:51:24,331 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:51:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:51:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 13:51:24,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:24,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:51:24,393 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash 710293960, now seen corresponding path program 1 times [2020-10-28 13:51:24,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:24,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856818752] [2020-10-28 13:51:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:25,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:25,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 13:51:25,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:25,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-28 13:51:25,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:25,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:51:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 13:51:25,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:51:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:25,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:25,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:25,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:51:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:25,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:51:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:25,476 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 13:51:25,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856818752] [2020-10-28 13:51:25,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:51:25,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:51:25,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123414576] [2020-10-28 13:51:25,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:51:25,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:25,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:51:25,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:51:25,508 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-28 13:51:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:40,309 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-28 13:51:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:51:40,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-28 13:51:40,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:40,348 INFO L225 Difference]: With dead ends: 2989 [2020-10-28 13:51:40,349 INFO L226 Difference]: Without dead ends: 2143 [2020-10-28 13:51:40,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:40,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-28 13:51:40,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-28 13:51:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-28 13:51:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-28 13:51:40,571 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 16 [2020-10-28 13:51:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:40,571 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-28 13:51:40,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:51:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-28 13:51:40,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 13:51:40,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:40,577 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:51:40,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:51:40,578 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:40,579 INFO L82 PathProgramCache]: Analyzing trace with hash -72286686, now seen corresponding path program 1 times [2020-10-28 13:51:40,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:40,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532878897] [2020-10-28 13:51:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:40,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:41,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:41,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:51:41,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:51:41,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-28 13:51:41,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:41,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:51:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:51:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:41,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:41,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:41,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:51:41,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:41,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:51:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:41,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:41,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:41,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:51:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 13:51:41,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:41,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:51:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:51:41,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532878897] [2020-10-28 13:51:41,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:51:41,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:51:41,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254314202] [2020-10-28 13:51:41,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:51:41,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:41,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:51:41,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:51:41,941 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 8 states. [2020-10-28 13:51:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:53,191 INFO L93 Difference]: Finished difference Result 5047 states and 8287 transitions. [2020-10-28 13:51:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:51:53,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-28 13:51:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:53,220 INFO L225 Difference]: With dead ends: 5047 [2020-10-28 13:51:53,220 INFO L226 Difference]: Without dead ends: 2917 [2020-10-28 13:51:53,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:51:53,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-10-28 13:51:53,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2880. [2020-10-28 13:51:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2020-10-28 13:51:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4329 transitions. [2020-10-28 13:51:53,358 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4329 transitions. Word has length 87 [2020-10-28 13:51:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:53,359 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 4329 transitions. [2020-10-28 13:51:53,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:51:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4329 transitions. [2020-10-28 13:51:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 13:51:53,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:53,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:51:53,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:51:53,380 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:53,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:53,383 INFO L82 PathProgramCache]: Analyzing trace with hash -894980336, now seen corresponding path program 1 times [2020-10-28 13:51:53,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:53,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673504630] [2020-10-28 13:51:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:55,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:55,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 13:51:55,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:51:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1702 [2020-10-28 13:51:55,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:55,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:51:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 13:51:55,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:51:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:55,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:55,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:55,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:55,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:51:55,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:55,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:55,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:51:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:55,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:55,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:55,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 13:51:55,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-28 13:51:55,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:55,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-28 13:51:55,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:51:56,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673504630] [2020-10-28 13:51:56,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:51:56,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:51:56,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365909553] [2020-10-28 13:51:56,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:56,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:56,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:56,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:56,089 INFO L87 Difference]: Start difference. First operand 2880 states and 4329 transitions. Second operand 7 states. [2020-10-28 13:52:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:07,390 INFO L93 Difference]: Finished difference Result 8757 states and 13284 transitions. [2020-10-28 13:52:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:52:07,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-28 13:52:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:07,432 INFO L225 Difference]: With dead ends: 8757 [2020-10-28 13:52:07,432 INFO L226 Difference]: Without dead ends: 5883 [2020-10-28 13:52:07,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:52:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2020-10-28 13:52:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 5091. [2020-10-28 13:52:07,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5091 states. [2020-10-28 13:52:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 6833 transitions. [2020-10-28 13:52:07,636 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 6833 transitions. Word has length 166 [2020-10-28 13:52:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:07,637 INFO L481 AbstractCegarLoop]: Abstraction has 5091 states and 6833 transitions. [2020-10-28 13:52:07,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 6833 transitions. [2020-10-28 13:52:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-28 13:52:07,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:07,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 13:52:07,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:52:07,643 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:07,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:07,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1939123938, now seen corresponding path program 1 times [2020-10-28 13:52:07,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:07,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339957011] [2020-10-28 13:52:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:08,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 13:52:08,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:52:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-28 13:52:08,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:08,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:52:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:09,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:09,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:09,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:09,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:52:09,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:09,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:09,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:09,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:09,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:09,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:52:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:52:09,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:09,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:52:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 13:52:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:09,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:09,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:52:09,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:52:09,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:09,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:09,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:09,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:52:09,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:09,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:52:09,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339957011] [2020-10-28 13:52:09,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:09,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:52:09,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592488913] [2020-10-28 13:52:09,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:09,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:09,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:09,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:09,491 INFO L87 Difference]: Start difference. First operand 5091 states and 6833 transitions. Second operand 7 states. [2020-10-28 13:52:20,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:20,588 INFO L93 Difference]: Finished difference Result 11245 states and 15549 transitions. [2020-10-28 13:52:20,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:20,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-28 13:52:20,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:20,630 INFO L225 Difference]: With dead ends: 11245 [2020-10-28 13:52:20,631 INFO L226 Difference]: Without dead ends: 6160 [2020-10-28 13:52:20,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:52:20,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2020-10-28 13:52:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 5846. [2020-10-28 13:52:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5846 states. [2020-10-28 13:52:20,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5846 states to 5846 states and 7646 transitions. [2020-10-28 13:52:20,844 INFO L78 Accepts]: Start accepts. Automaton has 5846 states and 7646 transitions. Word has length 177 [2020-10-28 13:52:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:20,845 INFO L481 AbstractCegarLoop]: Abstraction has 5846 states and 7646 transitions. [2020-10-28 13:52:20,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5846 states and 7646 transitions. [2020-10-28 13:52:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-28 13:52:20,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:20,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:20,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:52:20,850 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:20,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2045959552, now seen corresponding path program 1 times [2020-10-28 13:52:20,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:20,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324550032] [2020-10-28 13:52:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:20,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:21,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:24,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:24,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-28 13:52:24,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:52:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3653 [2020-10-28 13:52:24,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:24,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:24,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:52:24,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:52:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:24,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:52:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:24,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:24,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:25,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:25,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:52:25,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:25,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 13:52:25,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:25,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:52:25,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 13:52:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:25,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:25,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 13:52:25,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:25,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:52:25,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:25,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 13:52:25,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:52:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 16 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:52:25,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324550032] [2020-10-28 13:52:25,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:25,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:52:25,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745612175] [2020-10-28 13:52:25,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:52:25,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:25,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:52:25,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:52:25,432 INFO L87 Difference]: Start difference. First operand 5846 states and 7646 transitions. Second operand 8 states. [2020-10-28 13:52:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:41,116 INFO L93 Difference]: Finished difference Result 15431 states and 20700 transitions. [2020-10-28 13:52:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:52:41,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-10-28 13:52:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:41,182 INFO L225 Difference]: With dead ends: 15431 [2020-10-28 13:52:41,183 INFO L226 Difference]: Without dead ends: 10293 [2020-10-28 13:52:41,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:52:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10293 states. [2020-10-28 13:52:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10293 to 9480. [2020-10-28 13:52:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9480 states. [2020-10-28 13:52:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9480 states to 9480 states and 11778 transitions. [2020-10-28 13:52:41,503 INFO L78 Accepts]: Start accepts. Automaton has 9480 states and 11778 transitions. Word has length 232 [2020-10-28 13:52:41,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:41,503 INFO L481 AbstractCegarLoop]: Abstraction has 9480 states and 11778 transitions. [2020-10-28 13:52:41,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:52:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9480 states and 11778 transitions. [2020-10-28 13:52:41,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-28 13:52:41,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:41,513 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:41,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:52:41,513 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:41,514 INFO L82 PathProgramCache]: Analyzing trace with hash 880535552, now seen corresponding path program 1 times [2020-10-28 13:52:41,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:41,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331100295] [2020-10-28 13:52:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:42,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:42,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:45,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:45,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-28 13:52:45,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:52:45,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4178 [2020-10-28 13:52:45,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:45,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:52:45,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:52:45,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:45,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:45,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:45,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:45,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:45,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:52:45,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:45,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:45,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:45,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:46,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:52:46,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 13:52:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:46,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:52:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:46,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:52:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:46,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:46,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:46,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:52:46,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:52:46,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:46,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:52:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:46,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 13:52:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:46,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:46,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 13:52:46,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:46,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:52:46,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:46,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 13:52:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:52:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 147 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-28 13:52:47,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331100295] [2020-10-28 13:52:47,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:47,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:52:47,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512289171] [2020-10-28 13:52:47,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:52:47,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:47,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:52:47,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:52:47,080 INFO L87 Difference]: Start difference. First operand 9480 states and 11778 transitions. Second operand 8 states. [2020-10-28 13:53:08,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:08,333 INFO L93 Difference]: Finished difference Result 24090 states and 29785 transitions. [2020-10-28 13:53:08,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:53:08,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 418 [2020-10-28 13:53:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:08,368 INFO L225 Difference]: With dead ends: 24090 [2020-10-28 13:53:08,368 INFO L226 Difference]: Without dead ends: 11662 [2020-10-28 13:53:08,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:53:08,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11662 states. [2020-10-28 13:53:08,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11662 to 10188. [2020-10-28 13:53:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10188 states. [2020-10-28 13:53:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10188 states to 10188 states and 11076 transitions. [2020-10-28 13:53:08,626 INFO L78 Accepts]: Start accepts. Automaton has 10188 states and 11076 transitions. Word has length 418 [2020-10-28 13:53:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:08,627 INFO L481 AbstractCegarLoop]: Abstraction has 10188 states and 11076 transitions. [2020-10-28 13:53:08,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:53:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 10188 states and 11076 transitions. [2020-10-28 13:53:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-28 13:53:08,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:08,640 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:08,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:53:08,640 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:08,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:08,641 INFO L82 PathProgramCache]: Analyzing trace with hash 549122908, now seen corresponding path program 1 times [2020-10-28 13:53:08,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:08,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591516570] [2020-10-28 13:53:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:08,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:08,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:13,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:13,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-28 13:53:13,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:53:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 13:53:13,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:13,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:53:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:53:13,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:13,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:13,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:13,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:13,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:13,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:53:13,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:13,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:13,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:13,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:13,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:14,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:14,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:53:14,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:14,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-28 13:53:14,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:14,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:53:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:14,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:14,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:14,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:14,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:53:14,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:53:14,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:14,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:53:14,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:14,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:53:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:14,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:14,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:53:14,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:14,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:53:14,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:14,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:14,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:14,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:14,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:53:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:53:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:14,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:14,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:14,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:53:14,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:14,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:53:14,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:14,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:14,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:14,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:53:14,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:14,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 115 proven. 71 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:53:15,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591516570] [2020-10-28 13:53:15,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:15,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:15,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915717382] [2020-10-28 13:53:15,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:15,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:15,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:15,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:15,081 INFO L87 Difference]: Start difference. First operand 10188 states and 11076 transitions. Second operand 7 states. [2020-10-28 13:53:24,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:24,350 INFO L93 Difference]: Finished difference Result 25688 states and 28542 transitions. [2020-10-28 13:53:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:53:24,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 485 [2020-10-28 13:53:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:24,404 INFO L225 Difference]: With dead ends: 25688 [2020-10-28 13:53:24,404 INFO L226 Difference]: Without dead ends: 16208 [2020-10-28 13:53:24,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 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 13:53:24,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16208 states. [2020-10-28 13:53:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16208 to 15374. [2020-10-28 13:53:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15374 states. [2020-10-28 13:53:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15374 states to 15374 states and 16973 transitions. [2020-10-28 13:53:24,776 INFO L78 Accepts]: Start accepts. Automaton has 15374 states and 16973 transitions. Word has length 485 [2020-10-28 13:53:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:24,778 INFO L481 AbstractCegarLoop]: Abstraction has 15374 states and 16973 transitions. [2020-10-28 13:53:24,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 15374 states and 16973 transitions. [2020-10-28 13:53:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-28 13:53:24,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:24,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:53:24,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:53:24,793 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:24,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:24,794 INFO L82 PathProgramCache]: Analyzing trace with hash 198958708, now seen corresponding path program 1 times [2020-10-28 13:53:24,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:24,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210479000] [2020-10-28 13:53:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:28,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:29,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:29,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-28 13:53:29,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:53:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 13:53:29,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:29,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:53:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 13:53:29,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:30,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:30,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:30,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:30,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:53:30,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:30,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:30,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:30,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:53:30,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:30,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-28 13:53:30,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:30,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:53:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:30,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:30,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:30,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:53:30,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:53:30,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:30,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:53:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:30,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:53:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:30,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:30,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:30,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:53:30,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:30,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 13:53:30,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:30,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 13:53:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:30,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-28 13:53:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:30,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:30,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:30,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:53:30,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:53:30,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:30,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:53:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:30,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 167 proven. 71 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:53:31,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210479000] [2020-10-28 13:53:31,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:31,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:31,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148490344] [2020-10-28 13:53:31,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:31,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:31,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:31,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:31,209 INFO L87 Difference]: Start difference. First operand 15374 states and 16973 transitions. Second operand 7 states. [2020-10-28 13:53:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:40,490 INFO L93 Difference]: Finished difference Result 44519 states and 50293 transitions. [2020-10-28 13:53:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:53:40,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-28 13:53:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:40,596 INFO L225 Difference]: With dead ends: 44519 [2020-10-28 13:53:40,596 INFO L226 Difference]: Without dead ends: 29853 [2020-10-28 13:53:40,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 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 13:53:40,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29853 states. [2020-10-28 13:53:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29853 to 29098. [2020-10-28 13:53:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29098 states. [2020-10-28 13:53:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29098 states to 29098 states and 32774 transitions. [2020-10-28 13:53:41,359 INFO L78 Accepts]: Start accepts. Automaton has 29098 states and 32774 transitions. Word has length 537 [2020-10-28 13:53:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:41,360 INFO L481 AbstractCegarLoop]: Abstraction has 29098 states and 32774 transitions. [2020-10-28 13:53:41,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 29098 states and 32774 transitions. [2020-10-28 13:53:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2020-10-28 13:53:41,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:41,380 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:41,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:53:41,380 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:41,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:41,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1689239970, now seen corresponding path program 1 times [2020-10-28 13:53:41,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:41,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776094795] [2020-10-28 13:53:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:46,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:46,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 636 [2020-10-28 13:53:46,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:53:46,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 13:53:46,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:46,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:53:46,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:53:46,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:46,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:46,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:46,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:46,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:53:46,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:46,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:46,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:46,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:46,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:53:46,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:46,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 13:53:46,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:46,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:53:46,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:47,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:47,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:47,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:53:47,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:47,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:53:47,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:47,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:53:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:47,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:53:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:47,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:47,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:53:47,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:53:47,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:47,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:47,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:47,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:47,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:53:47,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:47,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-28 13:53:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:47,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:47,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:53:47,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:53:47,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:47,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:53:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:47,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2020-10-28 13:53:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:47,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:47,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:53:47,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:53:47,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:47,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:53:47,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 159 proven. 167 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-10-28 13:53:47,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776094795] [2020-10-28 13:53:47,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:47,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:47,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443911461] [2020-10-28 13:53:47,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:47,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:47,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:47,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:47,655 INFO L87 Difference]: Start difference. First operand 29098 states and 32774 transitions. Second operand 7 states. [2020-10-28 13:54:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:02,790 INFO L93 Difference]: Finished difference Result 66843 states and 75907 transitions. [2020-10-28 13:54:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:02,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 616 [2020-10-28 13:54:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:02,926 INFO L225 Difference]: With dead ends: 66843 [2020-10-28 13:54:02,927 INFO L226 Difference]: Without dead ends: 38454 [2020-10-28 13:54:02,969 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 13:54:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38454 states. [2020-10-28 13:54:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38454 to 38361. [2020-10-28 13:54:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38361 states. [2020-10-28 13:54:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38361 states to 38361 states and 42927 transitions. [2020-10-28 13:54:03,675 INFO L78 Accepts]: Start accepts. Automaton has 38361 states and 42927 transitions. Word has length 616 [2020-10-28 13:54:03,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:03,676 INFO L481 AbstractCegarLoop]: Abstraction has 38361 states and 42927 transitions. [2020-10-28 13:54:03,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:03,676 INFO L276 IsEmpty]: Start isEmpty. Operand 38361 states and 42927 transitions. [2020-10-28 13:54:03,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-10-28 13:54:03,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:03,697 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:54:03,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:54:03,697 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1451525562, now seen corresponding path program 1 times [2020-10-28 13:54:03,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:03,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176010205] [2020-10-28 13:54:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:03,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:08,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:08,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 648 [2020-10-28 13:54:08,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:54:08,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:54:08,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:08,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 464 [2020-10-28 13:54:08,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 13:54:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:08,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:08,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:08,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:08,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:08,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:08,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:54:08,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:08,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:08,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:09,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:09,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:09,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:09,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:54:09,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:09,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:09,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:09,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:09,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:09,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:09,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:09,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:09,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:09,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:54:09,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:09,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:09,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:54:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:09,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:09,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:09,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:54:09,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:54:09,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:09,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:54:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:09,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 13:54:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:09,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:09,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:09,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:54:09,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:09,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:54:09,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:09,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:54:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2020-10-28 13:54:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:09,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:09,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:09,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:54:09,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:54:09,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:09,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:54:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 219 proven. 71 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-28 13:54:09,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176010205] [2020-10-28 13:54:09,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:09,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:09,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207883877] [2020-10-28 13:54:09,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:09,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:09,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:09,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:09,876 INFO L87 Difference]: Start difference. First operand 38361 states and 42927 transitions. Second operand 7 states. [2020-10-28 13:54:21,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:21,383 INFO L93 Difference]: Finished difference Result 89781 states and 104258 transitions. [2020-10-28 13:54:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:21,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 628 [2020-10-28 13:54:21,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:21,574 INFO L225 Difference]: With dead ends: 89781 [2020-10-28 13:54:21,574 INFO L226 Difference]: Without dead ends: 52125 [2020-10-28 13:54:21,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52125 states. [2020-10-28 13:54:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52125 to 51794. [2020-10-28 13:54:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51794 states. [2020-10-28 13:54:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51794 states to 51794 states and 57586 transitions. [2020-10-28 13:54:23,098 INFO L78 Accepts]: Start accepts. Automaton has 51794 states and 57586 transitions. Word has length 628 [2020-10-28 13:54:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:23,099 INFO L481 AbstractCegarLoop]: Abstraction has 51794 states and 57586 transitions. [2020-10-28 13:54:23,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 51794 states and 57586 transitions. [2020-10-28 13:54:23,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-10-28 13:54:23,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:23,108 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:23,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:54:23,109 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:23,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1127826204, now seen corresponding path program 1 times [2020-10-28 13:54:23,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:23,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100308431] [2020-10-28 13:54:23,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:24,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:28,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:28,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 669 [2020-10-28 13:54:28,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:54:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:54:28,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:28,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 577 [2020-10-28 13:54:28,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:54:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:28,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:28,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:28,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:54:28,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:28,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:28,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:28,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:28,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:54:28,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:28,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:28,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:28,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:28,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:28,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:54:28,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:28,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:28,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:28,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:54:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:28,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:28,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:54:28,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:28,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:54:28,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:28,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:28,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:28,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 13:54:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:28,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:54:28,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:54:28,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:28,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:54:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:28,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-10-28 13:54:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:29,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:29,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:29,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:54:29,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:29,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:54:29,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:29,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:54:29,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2020-10-28 13:54:29,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100308431] [2020-10-28 13:54:29,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:29,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:29,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806592790] [2020-10-28 13:54:29,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:29,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:29,296 INFO L87 Difference]: Start difference. First operand 51794 states and 57586 transitions. Second operand 7 states. [2020-10-28 13:54:41,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:41,440 INFO L93 Difference]: Finished difference Result 104034 states and 118317 transitions. [2020-10-28 13:54:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:41,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 649 [2020-10-28 13:54:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:41,643 INFO L225 Difference]: With dead ends: 104034 [2020-10-28 13:54:41,644 INFO L226 Difference]: Without dead ends: 52234 [2020-10-28 13:54:41,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52234 states. [2020-10-28 13:54:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52234 to 51116. [2020-10-28 13:54:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51116 states. [2020-10-28 13:54:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51116 states to 51116 states and 55375 transitions. [2020-10-28 13:54:43,175 INFO L78 Accepts]: Start accepts. Automaton has 51116 states and 55375 transitions. Word has length 649 [2020-10-28 13:54:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:43,177 INFO L481 AbstractCegarLoop]: Abstraction has 51116 states and 55375 transitions. [2020-10-28 13:54:43,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 51116 states and 55375 transitions. [2020-10-28 13:54:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2020-10-28 13:54:43,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:43,188 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:43,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:54:43,188 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:43,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:43,189 INFO L82 PathProgramCache]: Analyzing trace with hash -2060737442, now seen corresponding path program 1 times [2020-10-28 13:54:43,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:43,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313905106] [2020-10-28 13:54:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:43,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:48,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:48,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 700 [2020-10-28 13:54:48,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:54:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 13:54:48,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:48,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 464 [2020-10-28 13:54:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:54:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:48,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:48,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:48,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:48,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:48,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:54:48,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:48,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:48,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:48,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:48,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:48,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:48,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:48,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:54:48,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:48,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:48,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:48,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:48,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:48,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:54:48,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:48,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:48,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:48,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:54:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:48,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:48,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:48,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:54:48,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:48,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:54:48,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:48,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:54:48,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:48,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 13:54:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:48,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:48,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:54:48,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:54:48,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:48,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 13:54:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:49,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2020-10-28 13:54:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:49,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:49,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:54:49,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:54:49,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:49,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:54:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 323 proven. 71 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-28 13:54:49,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313905106] [2020-10-28 13:54:49,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:49,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:49,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426964884] [2020-10-28 13:54:49,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:49,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:49,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:49,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:49,371 INFO L87 Difference]: Start difference. First operand 51116 states and 55375 transitions. Second operand 7 states.