/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:19:45,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:19:45,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:19:45,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:19:45,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:19:45,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:19:45,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:19:45,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:19:45,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:19:45,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:19:45,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:19:45,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:19:45,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:19:45,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:19:45,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:19:45,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:19:45,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:19:45,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:19:45,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:19:45,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:19:45,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:19:45,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:19:45,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:19:46,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:19:46,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:19:46,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:19:46,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:19:46,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:19:46,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:19:46,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:19:46,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:19:46,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:19:46,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:19:46,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:19:46,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:19:46,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:19:46,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:19:46,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:19:46,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:19:46,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:19:46,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:19:46,022 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 [2020-10-12 14:19:46,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:19:46,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:19:46,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:19:46,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:19:46,086 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:19:46,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:19:46,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:19:46,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:19:46,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:19:46,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:19:46,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:19:46,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:19:46,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:19:46,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:19:46,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:19:46,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:19:46,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:19:46,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:19:46,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:19:46,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:19:46,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:19:46,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:19:46,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:19:46,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:19:46,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:19:46,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:19:46,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:19:46,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:19:46,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:19:46,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:19:46,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:19:46,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:19:46,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:19:46,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:19:46,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:19:46,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52.c [2020-10-12 14:19:46,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15ae31639/9f942054ccb548f187bfecffd3429c28/FLAG6e7fb9d4b [2020-10-12 14:19:47,258 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:19:47,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label52.c [2020-10-12 14:19:47,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15ae31639/9f942054ccb548f187bfecffd3429c28/FLAG6e7fb9d4b [2020-10-12 14:19:47,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15ae31639/9f942054ccb548f187bfecffd3429c28 [2020-10-12 14:19:47,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:19:47,436 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:19:47,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:19:47,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:19:47,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:19:47,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:19:47" (1/1) ... [2020-10-12 14:19:47,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:47, skipping insertion in model container [2020-10-12 14:19:47,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:19:47" (1/1) ... [2020-10-12 14:19:47,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:19:47,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:19:48,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:19:48,522 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:19:48,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:19:48,965 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:19:48,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48 WrapperNode [2020-10-12 14:19:48,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:19:48,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:19:48,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:19:48,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:19:48,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48" (1/1) ... [2020-10-12 14:19:48,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48" (1/1) ... [2020-10-12 14:19:49,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48" (1/1) ... [2020-10-12 14:19:49,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48" (1/1) ... [2020-10-12 14:19:49,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48" (1/1) ... [2020-10-12 14:19:49,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48" (1/1) ... [2020-10-12 14:19:49,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48" (1/1) ... [2020-10-12 14:19:49,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:19:49,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:19:49,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:19:49,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:19:49,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48" (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 [2020-10-12 14:19:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:19:49,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:19:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:19:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:19:49,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:19:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:19:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:19:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:19:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:19:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:19:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:19:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:19:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:19:54,991 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:19:54,992 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:19:55,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:19:55 BoogieIcfgContainer [2020-10-12 14:19:55,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:19:55,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:19:55,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:19:55,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:19:55,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:19:47" (1/3) ... [2020-10-12 14:19:55,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a10af4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:19:55, skipping insertion in model container [2020-10-12 14:19:55,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:48" (2/3) ... [2020-10-12 14:19:55,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a10af4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:19:55, skipping insertion in model container [2020-10-12 14:19:55,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:19:55" (3/3) ... [2020-10-12 14:19:55,031 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label52.c [2020-10-12 14:19:55,043 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:19:55,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:19:55,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:19:55,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:19:55,106 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:19:55,106 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:19:55,106 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:19:55,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:19:55,107 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:19:55,107 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:19:55,107 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:19:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:19:55,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 14:19:55,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:55,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:19:55,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:55,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:55,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1937912579, now seen corresponding path program 1 times [2020-10-12 14:19:55,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:55,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151246036] [2020-10-12 14:19:55,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:55,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:55,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 14:19:55,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 14:19:55,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:19:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:19:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 14:19:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:19:55,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:55,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:55,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:55,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:19:55,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:19:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:19:55,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151246036] [2020-10-12 14:19:55,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:19:55,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:19:55,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42268961] [2020-10-12 14:19:55,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:19:55,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:55,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:19:55,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:19:55,966 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:20:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:04,731 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-12 14:20:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:20:04,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-12 14:20:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:04,758 INFO L225 Difference]: With dead ends: 1199 [2020-10-12 14:20:04,759 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 14:20:04,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:20:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 14:20:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-12 14:20:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:20:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-12 14:20:04,878 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 45 [2020-10-12 14:20:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:04,879 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-12 14:20:04,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:20:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-12 14:20:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 14:20:04,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:04,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:04,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:20:04,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:04,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:04,938 INFO L82 PathProgramCache]: Analyzing trace with hash -954169670, now seen corresponding path program 1 times [2020-10-12 14:20:04,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:04,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771530857] [2020-10-12 14:20:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:05,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:06,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:06,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 14:20:06,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:20:06,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1468 [2020-10-12 14:20:06,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:20:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:20:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:20:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:20:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:06,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:06,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:06,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:06,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:20:06,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:20:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 14:20:06,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:06,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:06,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:20:06,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:06,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-12 14:20:06,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:20:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:20:06,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771530857] [2020-10-12 14:20:06,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:20:06,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:20:06,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425667959] [2020-10-12 14:20:06,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:20:06,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:06,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:20:06,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:20:06,874 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 7 states. [2020-10-12 14:20:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:13,952 INFO L93 Difference]: Finished difference Result 2046 states and 3016 transitions. [2020-10-12 14:20:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:20:13,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 14:20:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:13,967 INFO L225 Difference]: With dead ends: 2046 [2020-10-12 14:20:13,967 INFO L226 Difference]: Without dead ends: 1361 [2020-10-12 14:20:13,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:20:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-10-12 14:20:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1337. [2020-10-12 14:20:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-10-12 14:20:14,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1730 transitions. [2020-10-12 14:20:14,058 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1730 transitions. Word has length 114 [2020-10-12 14:20:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:14,058 INFO L479 AbstractCegarLoop]: Abstraction has 1337 states and 1730 transitions. [2020-10-12 14:20:14,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:20:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1730 transitions. [2020-10-12 14:20:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-12 14:20:14,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:14,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:20:14,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:20:14,068 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:14,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1114574102, now seen corresponding path program 1 times [2020-10-12 14:20:14,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:14,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726462277] [2020-10-12 14:20:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:14,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:14,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:19,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:19,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-12 14:20:19,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:20:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 14:20:19,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 14:20:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:20:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-12 14:20:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:19,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:19,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:19,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:19,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:19,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:19,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:20:19,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:19,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:19,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:19,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:20:19,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:19,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:19,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:19,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:20:19,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 14:20:19,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:19,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:20:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:19,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:20:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:19,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:20:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:20:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-12 14:20:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:20:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:20:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:20:20,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726462277] [2020-10-12 14:20:20,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:20,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 14:20:20,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247603983] [2020-10-12 14:20:20,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:20:20,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:20,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:20:20,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:20:20,737 INFO L87 Difference]: Start difference. First operand 1337 states and 1730 transitions. Second operand 13 states. [2020-10-12 14:20:22,561 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-12 14:20:25,232 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-12 14:20:26,246 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-12 14:20:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:36,623 INFO L93 Difference]: Finished difference Result 4437 states and 5823 transitions. [2020-10-12 14:20:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 14:20:36,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 219 [2020-10-12 14:20:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:36,644 INFO L225 Difference]: With dead ends: 4437 [2020-10-12 14:20:36,644 INFO L226 Difference]: Without dead ends: 3106 [2020-10-12 14:20:36,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=520, Invalid=1642, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 14:20:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2020-10-12 14:20:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 2302. [2020-10-12 14:20:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2302 states. [2020-10-12 14:20:36,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 2957 transitions. [2020-10-12 14:20:36,741 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 2957 transitions. Word has length 219 [2020-10-12 14:20:36,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:36,742 INFO L479 AbstractCegarLoop]: Abstraction has 2302 states and 2957 transitions. [2020-10-12 14:20:36,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:20:36,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 2957 transitions. [2020-10-12 14:20:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-12 14:20:36,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:36,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:20:36,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:20:36,752 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:36,753 INFO L82 PathProgramCache]: Analyzing trace with hash -971639557, now seen corresponding path program 1 times [2020-10-12 14:20:36,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:36,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773062441] [2020-10-12 14:20:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:36,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:39,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:39,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:41,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:41,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-12 14:20:41,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:20:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 14:20:41,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:20:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:20:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-12 14:20:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:41,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:41,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:41,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:41,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:41,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:20:41,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:20:41,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:41,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:42,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:42,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:42,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:20:42,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-12 14:20:42,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:20:42,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-12 14:20:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:42,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:42,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:20:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:20:42,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-12 14:20:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 76 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:20:42,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773062441] [2020-10-12 14:20:42,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:42,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:20:42,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995572622] [2020-10-12 14:20:42,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:20:42,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:42,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:20:42,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:20:42,950 INFO L87 Difference]: Start difference. First operand 2302 states and 2957 transitions. Second operand 7 states. [2020-10-12 14:20:51,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:51,330 INFO L93 Difference]: Finished difference Result 4962 states and 6319 transitions. [2020-10-12 14:20:51,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:20:51,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-12 14:20:51,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:51,352 INFO L225 Difference]: With dead ends: 4962 [2020-10-12 14:20:51,353 INFO L226 Difference]: Without dead ends: 2666 [2020-10-12 14:20:51,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:20:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-10-12 14:20:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2614. [2020-10-12 14:20:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2020-10-12 14:20:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3282 transitions. [2020-10-12 14:20:51,436 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3282 transitions. Word has length 341 [2020-10-12 14:20:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:51,439 INFO L479 AbstractCegarLoop]: Abstraction has 2614 states and 3282 transitions. [2020-10-12 14:20:51,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:20:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3282 transitions. [2020-10-12 14:20:51,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-12 14:20:51,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:51,451 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:51,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:20:51,452 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:51,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:51,452 INFO L82 PathProgramCache]: Analyzing trace with hash -430511772, now seen corresponding path program 1 times [2020-10-12 14:20:51,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:51,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221444524] [2020-10-12 14:20:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:51,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:52,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:54,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:54,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-12 14:20:54,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:20:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-10-12 14:20:54,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 382 [2020-10-12 14:20:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 14:20:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:54,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:54,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:54,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:54,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:20:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:54,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:54,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:54,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:54,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:20:54,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:54,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 14:20:54,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:54,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:54,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:54,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:54,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:20:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:54,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:54,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:54,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:20:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 14:20:54,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 14:20:54,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 14:20:54,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221444524] [2020-10-12 14:20:54,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:54,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:20:54,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929982996] [2020-10-12 14:20:54,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:20:54,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:54,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:20:54,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:20:54,932 INFO L87 Difference]: Start difference. First operand 2614 states and 3282 transitions. Second operand 6 states. [2020-10-12 14:21:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:01,982 INFO L93 Difference]: Finished difference Result 6804 states and 9316 transitions. [2020-10-12 14:21:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:21:01,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 415 [2020-10-12 14:21:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:02,012 INFO L225 Difference]: With dead ends: 6804 [2020-10-12 14:21:02,013 INFO L226 Difference]: Without dead ends: 4503 [2020-10-12 14:21:02,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:21:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2020-10-12 14:21:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 4497. [2020-10-12 14:21:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4497 states. [2020-10-12 14:21:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 6021 transitions. [2020-10-12 14:21:02,177 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 6021 transitions. Word has length 415 [2020-10-12 14:21:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:02,179 INFO L479 AbstractCegarLoop]: Abstraction has 4497 states and 6021 transitions. [2020-10-12 14:21:02,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:21:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 6021 transitions. [2020-10-12 14:21:02,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-12 14:21:02,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:02,195 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:02,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:21:02,196 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:02,196 INFO L82 PathProgramCache]: Analyzing trace with hash 833514518, now seen corresponding path program 1 times [2020-10-12 14:21:02,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:02,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371045763] [2020-10-12 14:21:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:03,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:07,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-12 14:21:07,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:21:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 14:21:07,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 14:21:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:21:07,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 433 [2020-10-12 14:21:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:07,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:07,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:21:07,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:21:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:07,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:21:07,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 14:21:07,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:21:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:21:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:08,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:21:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 14:21:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:21:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:08,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-12 14:21:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:08,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:08,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:21:08,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:08,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-12 14:21:08,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 14:21:08,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 116 proven. 4 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-12 14:21:09,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371045763] [2020-10-12 14:21:09,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:09,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:21:09,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693162987] [2020-10-12 14:21:09,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:21:09,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:09,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:21:09,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:21:09,114 INFO L87 Difference]: Start difference. First operand 4497 states and 6021 transitions. Second operand 7 states. [2020-10-12 14:21:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:20,066 INFO L93 Difference]: Finished difference Result 12219 states and 17193 transitions. [2020-10-12 14:21:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:21:20,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 468 [2020-10-12 14:21:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:20,119 INFO L225 Difference]: With dead ends: 12219 [2020-10-12 14:21:20,119 INFO L226 Difference]: Without dead ends: 8035 [2020-10-12 14:21:20,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:21:20,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8035 states. [2020-10-12 14:21:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8035 to 7028. [2020-10-12 14:21:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7028 states. [2020-10-12 14:21:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7028 states to 7028 states and 9029 transitions. [2020-10-12 14:21:20,438 INFO L78 Accepts]: Start accepts. Automaton has 7028 states and 9029 transitions. Word has length 468 [2020-10-12 14:21:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:20,440 INFO L479 AbstractCegarLoop]: Abstraction has 7028 states and 9029 transitions. [2020-10-12 14:21:20,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:21:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7028 states and 9029 transitions. [2020-10-12 14:21:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-12 14:21:20,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:20,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:20,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:21:20,463 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:20,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:20,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1090382546, now seen corresponding path program 1 times [2020-10-12 14:21:20,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:20,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263147314] [2020-10-12 14:21:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:21,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:25,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:25,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 572 [2020-10-12 14:21:25,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:21:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 14:21:25,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:21:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:21:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:25,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:25,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:25,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:21:25,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:25,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:25,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:25,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:25,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:21:25,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 14:21:25,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:21:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:26,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:21:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:26,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:26,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:26,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 14:21:26,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:21:26,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:26,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:21:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:26,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:26,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:21:26,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:21:26,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 14:21:26,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 226 proven. 110 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-12 14:21:26,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263147314] [2020-10-12 14:21:26,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:26,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:21:26,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150381301] [2020-10-12 14:21:26,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:21:26,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:26,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:21:26,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:21:26,789 INFO L87 Difference]: Start difference. First operand 7028 states and 9029 transitions. Second operand 8 states. [2020-10-12 14:21:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:38,405 INFO L93 Difference]: Finished difference Result 16348 states and 21049 transitions. [2020-10-12 14:21:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:21:38,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 558 [2020-10-12 14:21:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:38,469 INFO L225 Difference]: With dead ends: 16348 [2020-10-12 14:21:38,470 INFO L226 Difference]: Without dead ends: 9633 [2020-10-12 14:21:38,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:21:38,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9633 states. [2020-10-12 14:21:38,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9633 to 9263. [2020-10-12 14:21:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9263 states. [2020-10-12 14:21:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 11569 transitions. [2020-10-12 14:21:38,797 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 11569 transitions. Word has length 558 [2020-10-12 14:21:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:38,799 INFO L479 AbstractCegarLoop]: Abstraction has 9263 states and 11569 transitions. [2020-10-12 14:21:38,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:21:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 11569 transitions. [2020-10-12 14:21:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-12 14:21:38,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:38,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:38,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:21:38,818 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:38,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1736441866, now seen corresponding path program 1 times [2020-10-12 14:21:38,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:38,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659901558] [2020-10-12 14:21:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:39,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:40,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:40,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:40,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 584 [2020-10-12 14:21:40,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:21:40,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1963 [2020-10-12 14:21:40,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 539 [2020-10-12 14:21:40,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 14:21:40,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:41,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:41,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:41,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:41,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:41,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:21:41,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:41,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:41,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:41,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:41,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:41,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:41,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:41,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:21:41,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:41,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:21:41,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:41,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:21:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:41,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:41,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:41,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:21:41,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:41,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:41,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:21:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:41,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:41,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:41,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:21:41,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 14:21:41,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 14:21:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 117 proven. 3 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-12 14:21:41,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659901558] [2020-10-12 14:21:41,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:41,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:21:41,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468276389] [2020-10-12 14:21:41,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:21:41,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:41,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:21:41,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:21:41,881 INFO L87 Difference]: Start difference. First operand 9263 states and 11569 transitions. Second operand 5 states. [2020-10-12 14:21:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:49,568 INFO L93 Difference]: Finished difference Result 18239 states and 22868 transitions. [2020-10-12 14:21:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:21:49,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 570 [2020-10-12 14:21:49,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:49,608 INFO L225 Difference]: With dead ends: 18239 [2020-10-12 14:21:49,608 INFO L226 Difference]: Without dead ends: 9271 [2020-10-12 14:21:49,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:21:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9271 states. [2020-10-12 14:21:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9271 to 9263. [2020-10-12 14:21:49,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9263 states. [2020-10-12 14:21:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 11563 transitions. [2020-10-12 14:21:49,899 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 11563 transitions. Word has length 570 [2020-10-12 14:21:49,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:49,903 INFO L479 AbstractCegarLoop]: Abstraction has 9263 states and 11563 transitions. [2020-10-12 14:21:49,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:21:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 11563 transitions. [2020-10-12 14:21:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2020-10-12 14:21:49,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:49,921 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:49,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:21:49,922 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:49,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1146055400, now seen corresponding path program 1 times [2020-10-12 14:21:49,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:49,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036383751] [2020-10-12 14:21:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:50,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:51,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:51,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 610 [2020-10-12 14:21:51,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:51,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-12 14:21:51,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:21:51,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-12 14:21:51,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:51,496 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-12 14:21:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:51,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:51,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:51,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:51,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:21:51,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:51,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:51,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:51,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:51,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:51,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:21:51,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:51,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 14:21:51,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:51,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:21:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:51,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:51,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:51,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 14:21:51,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:21:51,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:21:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:52,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:52,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 14:21:52,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 14:21:52,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 14:21:52,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 378 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:21:52,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036383751] [2020-10-12 14:21:52,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:52,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:21:52,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228506771] [2020-10-12 14:21:52,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:21:52,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:52,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:21:52,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:21:52,354 INFO L87 Difference]: Start difference. First operand 9263 states and 11563 transitions. Second operand 7 states. [2020-10-12 14:22:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:03,602 INFO L93 Difference]: Finished difference Result 21425 states and 28206 transitions. [2020-10-12 14:22:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:22:03,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 596 [2020-10-12 14:22:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:03,651 INFO L225 Difference]: With dead ends: 21425 [2020-10-12 14:22:03,651 INFO L226 Difference]: Without dead ends: 12475 [2020-10-12 14:22:03,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:22:03,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12475 states. [2020-10-12 14:22:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12475 to 10570. [2020-10-12 14:22:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10570 states. [2020-10-12 14:22:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10570 states to 10570 states and 14044 transitions. [2020-10-12 14:22:03,963 INFO L78 Accepts]: Start accepts. Automaton has 10570 states and 14044 transitions. Word has length 596 [2020-10-12 14:22:03,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:03,965 INFO L479 AbstractCegarLoop]: Abstraction has 10570 states and 14044 transitions. [2020-10-12 14:22:03,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:22:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand 10570 states and 14044 transitions. [2020-10-12 14:22:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2020-10-12 14:22:03,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:03,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:03,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:22:03,990 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:03,991 INFO L82 PathProgramCache]: Analyzing trace with hash 126644404, now seen corresponding path program 1 times [2020-10-12 14:22:03,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:03,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423783403] [2020-10-12 14:22:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:07,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:07,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 666 [2020-10-12 14:22:07,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:22:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3119 [2020-10-12 14:22:07,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:22:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:22:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-12 14:22:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:07,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:07,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:07,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:22:07,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:07,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:07,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:07,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:22:07,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:22:07,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:07,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:22:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:07,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:07,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:22:07,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 14:22:07,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:22:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:22:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:07,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:07,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 14:22:07,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 14:22:07,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-12 14:22:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 391 proven. 39 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:22:08,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423783403] [2020-10-12 14:22:08,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:08,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:22:08,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621349564] [2020-10-12 14:22:08,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:22:08,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:08,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:22:08,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:22:08,311 INFO L87 Difference]: Start difference. First operand 10570 states and 14044 transitions. Second operand 6 states. [2020-10-12 14:22:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:21,389 INFO L93 Difference]: Finished difference Result 26093 states and 38342 transitions. [2020-10-12 14:22:21,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:22:21,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 652 [2020-10-12 14:22:21,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:21,470 INFO L225 Difference]: With dead ends: 26093 [2020-10-12 14:22:21,470 INFO L226 Difference]: Without dead ends: 15836 [2020-10-12 14:22:21,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:22:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15836 states. [2020-10-12 14:22:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15836 to 15637. [2020-10-12 14:22:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15637 states. [2020-10-12 14:22:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15637 states to 15637 states and 21230 transitions. [2020-10-12 14:22:21,965 INFO L78 Accepts]: Start accepts. Automaton has 15637 states and 21230 transitions. Word has length 652 [2020-10-12 14:22:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:21,966 INFO L479 AbstractCegarLoop]: Abstraction has 15637 states and 21230 transitions. [2020-10-12 14:22:21,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:22:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 15637 states and 21230 transitions. [2020-10-12 14:22:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-12 14:22:21,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:21,992 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-12 14:22:21,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:22:21,993 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:21,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:21,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2074322671, now seen corresponding path program 1 times [2020-10-12 14:22:21,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:21,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298184506] [2020-10-12 14:22:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:22,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:27,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:27,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 697 [2020-10-12 14:22:27,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:22:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 14:22:27,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:22:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-12 14:22:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-12 14:22:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:27,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:27,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:27,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:27,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:27,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:22:27,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:27,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:27,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:27,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:27,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:27,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:22:27,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 14:22:27,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-12 14:22:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:27,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:22:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:27,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:27,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 14:22:27,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 14:22:27,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 14:22:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:27,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-10-12 14:22:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:28,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:28,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 14:22:28,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 14:22:28,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 14:22:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:28,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-12 14:22:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:28,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:28,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 14:22:28,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 14:22:28,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-12 14:22:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 399 proven. 200 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-12 14:22:28,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298184506] [2020-10-12 14:22:28,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:28,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:22:28,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050592078] [2020-10-12 14:22:28,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:22:28,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:28,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:22:28,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:22:28,359 INFO L87 Difference]: Start difference. First operand 15637 states and 21230 transitions. Second operand 7 states. [2020-10-12 14:22:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:43,292 INFO L93 Difference]: Finished difference Result 39740 states and 55432 transitions. [2020-10-12 14:22:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:22:43,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 681 [2020-10-12 14:22:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:43,392 INFO L225 Difference]: With dead ends: 39740 [2020-10-12 14:22:43,392 INFO L226 Difference]: Without dead ends: 24416 [2020-10-12 14:22:43,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:22:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24416 states. [2020-10-12 14:22:43,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24416 to 24080. [2020-10-12 14:22:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24080 states. [2020-10-12 14:22:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24080 states to 24080 states and 32029 transitions. [2020-10-12 14:22:43,961 INFO L78 Accepts]: Start accepts. Automaton has 24080 states and 32029 transitions. Word has length 681 [2020-10-12 14:22:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:43,962 INFO L479 AbstractCegarLoop]: Abstraction has 24080 states and 32029 transitions. [2020-10-12 14:22:43,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:22:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24080 states and 32029 transitions. [2020-10-12 14:22:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2020-10-12 14:22:44,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:44,000 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:44,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:22:44,001 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:44,001 INFO L82 PathProgramCache]: Analyzing trace with hash -163117201, now seen corresponding path program 1 times [2020-10-12 14:22:44,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:44,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984690419] [2020-10-12 14:22:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:44,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:45,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:49,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:49,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 708 [2020-10-12 14:22:49,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 14:22:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 14:22:49,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:22:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 14:22:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 329 [2020-10-12 14:22:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:49,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:49,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:49,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:49,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:49,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:49,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:22:49,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:49,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:49,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:49,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:49,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:22:49,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 14:22:49,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 14:22:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:22:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:49,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:49,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:22:49,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:22:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-12 14:22:49,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:49,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:22:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:49,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-12 14:22:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:50,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:50,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 14:22:50,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 14:22:50,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 14:22:50,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:50,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-12 14:22:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:50,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:50,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 14:22:50,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:50,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 14:22:50,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:50,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:50,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-12 14:22:50,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:50,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:50,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2020-10-12 14:22:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:50,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:50,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:50,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 14:22:50,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:50,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 14:22:50,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-12 14:22:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 390 proven. 432 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2020-10-12 14:22:50,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984690419] [2020-10-12 14:22:50,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:50,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:22:50,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103248568] [2020-10-12 14:22:50,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:22:50,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:50,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:22:50,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:22:50,527 INFO L87 Difference]: Start difference. First operand 24080 states and 32029 transitions. Second operand 7 states. [2020-10-12 14:23:06,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:06,854 INFO L93 Difference]: Finished difference Result 53093 states and 70138 transitions. [2020-10-12 14:23:06,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:23:06,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 690 [2020-10-12 14:23:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:06,937 INFO L225 Difference]: With dead ends: 53093 [2020-10-12 14:23:06,938 INFO L226 Difference]: Without dead ends: 26768 [2020-10-12 14:23:06,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:23:07,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26768 states. [2020-10-12 14:23:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26768 to 24615. [2020-10-12 14:23:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24615 states. [2020-10-12 14:23:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24615 states to 24615 states and 29994 transitions. [2020-10-12 14:23:07,512 INFO L78 Accepts]: Start accepts. Automaton has 24615 states and 29994 transitions. Word has length 690 [2020-10-12 14:23:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:07,512 INFO L479 AbstractCegarLoop]: Abstraction has 24615 states and 29994 transitions. [2020-10-12 14:23:07,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:23:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 24615 states and 29994 transitions. [2020-10-12 14:23:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2020-10-12 14:23:07,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:07,544 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:23:07,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:23:07,545 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:07,545 INFO L82 PathProgramCache]: Analyzing trace with hash 445539218, now seen corresponding path program 1 times [2020-10-12 14:23:07,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:07,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129017711] [2020-10-12 14:23:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:07,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:08,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:12,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:12,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 750 [2020-10-12 14:23:12,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:23:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4735 [2020-10-12 14:23:12,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:23:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 423 [2020-10-12 14:23:12,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 326 [2020-10-12 14:23:12,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:12,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:12,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:12,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:12,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:12,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:23:12,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:12,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:12,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:12,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:12,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:12,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:12,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:12,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:12,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:23:12,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 14:23:12,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:23:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:12,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:12,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 14:23:12,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:23:12,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 14:23:12,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-10-12 14:23:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:12,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:13,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:13,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 14:23:13,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:13,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 14:23:13,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:13,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 14:23:13,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-12 14:23:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:13,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:13,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 14:23:13,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:13,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 14:23:13,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:23:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 14:23:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 709 proven. 78 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-12 14:23:13,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129017711] [2020-10-12 14:23:13,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:23:13,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:23:13,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610737373] [2020-10-12 14:23:13,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:23:13,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:13,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:23:13,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:23:13,829 INFO L87 Difference]: Start difference. First operand 24615 states and 29994 transitions. Second operand 9 states. [2020-10-12 14:23:27,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:27,435 INFO L93 Difference]: Finished difference Result 61358 states and 75182 transitions. [2020-10-12 14:23:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 14:23:27,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 734 [2020-10-12 14:23:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:27,564 INFO L225 Difference]: With dead ends: 61358 [2020-10-12 14:23:27,565 INFO L226 Difference]: Without dead ends: 37056 [2020-10-12 14:23:27,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-12 14:23:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37056 states. [2020-10-12 14:23:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37056 to 35506. [2020-10-12 14:23:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35506 states. [2020-10-12 14:23:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35506 states to 35506 states and 43249 transitions. [2020-10-12 14:23:28,393 INFO L78 Accepts]: Start accepts. Automaton has 35506 states and 43249 transitions. Word has length 734 [2020-10-12 14:23:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:28,394 INFO L479 AbstractCegarLoop]: Abstraction has 35506 states and 43249 transitions. [2020-10-12 14:23:28,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:23:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand 35506 states and 43249 transitions. [2020-10-12 14:23:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2020-10-12 14:23:28,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:28,430 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:23:28,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:23:28,431 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash 77251796, now seen corresponding path program 1 times [2020-10-12 14:23:28,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:28,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374219322] [2020-10-12 14:23:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking...