/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=NARROWEST --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/Problem17_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:34:36,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:34:36,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:34:36,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:34:36,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:34:36,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:34:36,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:34:36,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:34:36,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:34:36,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:34:36,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:34:36,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:34:36,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:34:36,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:34:36,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:34:36,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:34:36,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:34:36,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:34:36,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:34:36,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:34:36,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:34:36,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:34:36,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:34:36,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:34:36,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:34:36,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:34:36,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:34:36,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:34:36,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:34:36,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:34:36,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:34:36,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:34:37,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:34:37,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:34:37,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:34:37,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:34:37,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:34:37,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:34:37,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:34:37,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:34:37,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:34:37,007 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 [2020-10-13 09:34:37,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:34:37,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:34:37,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:34:37,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:34:37,032 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:34:37,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:34:37,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:34:37,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:34:37,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:34:37,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:34:37,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:34:37,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:34:37,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:34:37,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:34:37,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:34:37,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:34:37,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:34:37,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:34:37,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:34:37,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:34:37,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:34:37,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:34:37,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:34:37,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:34:37,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:34:37,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:34:37,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:34:37,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:34:37,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:34:37,036 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:34:37,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:34:37,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:34:37,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:34:37,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:34:37,400 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:34:37,401 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label32.c [2020-10-13 09:34:37,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13cf92ca3/c4873a2c62cc4590856389f7d1fa58ef/FLAGf0fa3cc81 [2020-10-13 09:34:38,105 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:34:38,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label32.c [2020-10-13 09:34:38,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13cf92ca3/c4873a2c62cc4590856389f7d1fa58ef/FLAGf0fa3cc81 [2020-10-13 09:34:38,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13cf92ca3/c4873a2c62cc4590856389f7d1fa58ef [2020-10-13 09:34:38,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:34:38,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:34:38,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:34:38,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:34:38,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:34:38,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:38" (1/1) ... [2020-10-13 09:34:38,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dd3c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:38, skipping insertion in model container [2020-10-13 09:34:38,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:38" (1/1) ... [2020-10-13 09:34:38,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:34:38,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:34:39,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:34:39,879 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:34:40,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:34:40,365 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:34:40,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40 WrapperNode [2020-10-13 09:34:40,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:34:40,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:34:40,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:34:40,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:34:40,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40" (1/1) ... [2020-10-13 09:34:40,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40" (1/1) ... [2020-10-13 09:34:40,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40" (1/1) ... [2020-10-13 09:34:40,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40" (1/1) ... [2020-10-13 09:34:40,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40" (1/1) ... [2020-10-13 09:34:40,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40" (1/1) ... [2020-10-13 09:34:40,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40" (1/1) ... [2020-10-13 09:34:40,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:34:40,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:34:40,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:34:40,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:34:40,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40" (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 [2020-10-13 09:34:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:34:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:34:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:34:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:34:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:34:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:34:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:34:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:34:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:34:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:34:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:34:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:34:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:34:49,210 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:34:49,211 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:34:49,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:49 BoogieIcfgContainer [2020-10-13 09:34:49,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:34:49,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:34:49,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:34:49,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:34:49,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:34:38" (1/3) ... [2020-10-13 09:34:49,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614a75cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:49, skipping insertion in model container [2020-10-13 09:34:49,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:40" (2/3) ... [2020-10-13 09:34:49,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614a75cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:49, skipping insertion in model container [2020-10-13 09:34:49,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:49" (3/3) ... [2020-10-13 09:34:49,231 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label32.c [2020-10-13 09:34:49,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:34:49,252 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:34:49,268 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:34:49,299 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:34:49,299 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:34:49,299 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:34:49,299 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:34:49,300 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:34:49,300 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:34:49,300 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:34:49,300 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:34:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:34:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 09:34:49,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:49,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:49,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:49,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:49,353 INFO L82 PathProgramCache]: Analyzing trace with hash -461510759, now seen corresponding path program 1 times [2020-10-13 09:34:49,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:49,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691571177] [2020-10-13 09:34:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:49,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:50,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:50,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 09:34:50,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-13 09:34:50,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:34:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:34:50,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 09:34:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:34:50,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:50,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:50,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:50,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:50,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:34:50,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:50,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:34:50,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:50,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691571177] [2020-10-13 09:34:50,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:34:50,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:34:50,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779452610] [2020-10-13 09:34:50,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:34:50,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:50,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:34:50,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:34:50,378 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:35:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:02,525 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-13 09:35:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:02,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-13 09:35:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:02,555 INFO L225 Difference]: With dead ends: 1692 [2020-10-13 09:35:02,555 INFO L226 Difference]: Without dead ends: 1012 [2020-10-13 09:35:02,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-13 09:35:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-13 09:35:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:35:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-13 09:35:02,684 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 54 [2020-10-13 09:35:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:02,685 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-13 09:35:02,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:35:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-13 09:35:02,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 09:35:02,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:02,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:02,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:35:02,693 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:02,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:02,694 INFO L82 PathProgramCache]: Analyzing trace with hash -564903324, now seen corresponding path program 1 times [2020-10-13 09:35:02,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:02,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189996792] [2020-10-13 09:35:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:02,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:03,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:04,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:04,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 09:35:04,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:35:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1280 [2020-10-13 09:35:04,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:35:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 09:35:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:04,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:04,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:04,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:04,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:04,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:35:04,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:04,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:04,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:04,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:04,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:35:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:35:04,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:35:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:04,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189996792] [2020-10-13 09:35:04,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:04,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:04,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612376466] [2020-10-13 09:35:04,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:04,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:04,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:04,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:04,284 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-13 09:35:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:21,212 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-13 09:35:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:21,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 09:35:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:21,224 INFO L225 Difference]: With dead ends: 2884 [2020-10-13 09:35:21,225 INFO L226 Difference]: Without dead ends: 1888 [2020-10-13 09:35:21,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:21,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-13 09:35:21,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-13 09:35:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-13 09:35:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-13 09:35:21,296 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 125 [2020-10-13 09:35:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:21,297 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-13 09:35:21,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:21,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-13 09:35:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 09:35:21,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:21,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:21,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:35:21,304 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:21,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:21,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1192538896, now seen corresponding path program 1 times [2020-10-13 09:35:21,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:21,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95698440] [2020-10-13 09:35:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:21,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:22,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:22,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:35:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:35:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-13 09:35:22,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:22,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:35:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:35:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:35:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:22,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:22,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:22,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:22,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:35:22,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:35:22,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:22,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:22,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:22,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:35:22,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:22,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 09:35:22,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:35:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:35:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:35:22,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:23,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95698440] [2020-10-13 09:35:23,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:23,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:35:23,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773715164] [2020-10-13 09:35:23,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:35:23,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:23,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:35:23,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:35:23,216 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 8 states. [2020-10-13 09:35:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:37,717 INFO L93 Difference]: Finished difference Result 4285 states and 5848 transitions. [2020-10-13 09:35:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:35:37,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-10-13 09:35:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:37,736 INFO L225 Difference]: With dead ends: 4285 [2020-10-13 09:35:37,736 INFO L226 Difference]: Without dead ends: 2339 [2020-10-13 09:35:37,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:35:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2020-10-13 09:35:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2337. [2020-10-13 09:35:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2337 states. [2020-10-13 09:35:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3062 transitions. [2020-10-13 09:35:37,805 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3062 transitions. Word has length 128 [2020-10-13 09:35:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:37,805 INFO L479 AbstractCegarLoop]: Abstraction has 2337 states and 3062 transitions. [2020-10-13 09:35:37,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:35:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3062 transitions. [2020-10-13 09:35:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 09:35:37,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:37,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:37,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:35:37,809 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:37,810 INFO L82 PathProgramCache]: Analyzing trace with hash -463078716, now seen corresponding path program 1 times [2020-10-13 09:35:37,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:37,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997164765] [2020-10-13 09:35:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:38,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:38,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:35:38,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:38,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-13 09:35:38,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:35:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 09:35:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:35:38,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:38,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:38,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:38,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:38,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:35:38,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:38,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:38,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:38,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:38,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:38,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:35:38,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:35:38,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:35:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:38,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997164765] [2020-10-13 09:35:38,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:38,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:35:38,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497445636] [2020-10-13 09:35:38,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:35:38,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:38,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:35:38,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:38,564 INFO L87 Difference]: Start difference. First operand 2337 states and 3062 transitions. Second operand 6 states. [2020-10-13 09:35:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:52,191 INFO L93 Difference]: Finished difference Result 6004 states and 8174 transitions. [2020-10-13 09:35:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:52,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-10-13 09:35:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:52,216 INFO L225 Difference]: With dead ends: 6004 [2020-10-13 09:35:52,216 INFO L226 Difference]: Without dead ends: 4106 [2020-10-13 09:35:52,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:35:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2020-10-13 09:35:52,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 3232. [2020-10-13 09:35:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3232 states. [2020-10-13 09:35:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4470 transitions. [2020-10-13 09:35:52,317 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4470 transitions. Word has length 141 [2020-10-13 09:35:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:52,318 INFO L479 AbstractCegarLoop]: Abstraction has 3232 states and 4470 transitions. [2020-10-13 09:35:52,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:35:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4470 transitions. [2020-10-13 09:35:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 09:35:52,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:52,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:52,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:35:52,323 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:52,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1345197393, now seen corresponding path program 1 times [2020-10-13 09:35:52,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:52,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106954165] [2020-10-13 09:35:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:53,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:53,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:57,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:57,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 09:35:57,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:35:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:35:57,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:35:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:35:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:57,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:57,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:57,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:35:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:57,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:57,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:57,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:57,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:35:57,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:57,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:35:57,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:57,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:57,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:57,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:57,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:35:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:57,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:57,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:57,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:35:57,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:35:57,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:35:57,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:35:57,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106954165] [2020-10-13 09:35:57,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:57,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:57,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719321952] [2020-10-13 09:35:57,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:57,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:57,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:57,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:57,893 INFO L87 Difference]: Start difference. First operand 3232 states and 4470 transitions. Second operand 5 states. [2020-10-13 09:36:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:11,120 INFO L93 Difference]: Finished difference Result 6044 states and 8521 transitions. [2020-10-13 09:36:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:11,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-13 09:36:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:11,141 INFO L225 Difference]: With dead ends: 6044 [2020-10-13 09:36:11,141 INFO L226 Difference]: Without dead ends: 3235 [2020-10-13 09:36:11,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2020-10-13 09:36:11,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3232. [2020-10-13 09:36:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3232 states. [2020-10-13 09:36:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4468 transitions. [2020-10-13 09:36:11,232 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4468 transitions. Word has length 216 [2020-10-13 09:36:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:11,233 INFO L479 AbstractCegarLoop]: Abstraction has 3232 states and 4468 transitions. [2020-10-13 09:36:11,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4468 transitions. [2020-10-13 09:36:11,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-13 09:36:11,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:11,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:11,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:36:11,238 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:11,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:11,238 INFO L82 PathProgramCache]: Analyzing trace with hash -347035763, now seen corresponding path program 1 times [2020-10-13 09:36:11,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:11,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954597746] [2020-10-13 09:36:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:11,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:13,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:13,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-13 09:36:13,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:36:13,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2051 [2020-10-13 09:36:13,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:13,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:13,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:36:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:36:13,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:13,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:13,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:13,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:36:13,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:13,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:13,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:13,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:36:13,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:36:13,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:13,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:36:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:13,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:13,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:13,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 09:36:13,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:36:13,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:36:13,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 09:36:13,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954597746] [2020-10-13 09:36:13,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:13,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:13,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152056186] [2020-10-13 09:36:13,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:13,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:13,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:13,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:13,847 INFO L87 Difference]: Start difference. First operand 3232 states and 4468 transitions. Second operand 5 states. [2020-10-13 09:36:27,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:27,308 INFO L93 Difference]: Finished difference Result 6051 states and 8525 transitions. [2020-10-13 09:36:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:27,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-13 09:36:27,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:27,337 INFO L225 Difference]: With dead ends: 6051 [2020-10-13 09:36:27,337 INFO L226 Difference]: Without dead ends: 3235 [2020-10-13 09:36:27,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2020-10-13 09:36:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3232. [2020-10-13 09:36:27,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3232 states. [2020-10-13 09:36:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4465 transitions. [2020-10-13 09:36:27,439 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4465 transitions. Word has length 218 [2020-10-13 09:36:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:27,440 INFO L479 AbstractCegarLoop]: Abstraction has 3232 states and 4465 transitions. [2020-10-13 09:36:27,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4465 transitions. [2020-10-13 09:36:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 09:36:27,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:27,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:27,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:36:27,445 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:27,446 INFO L82 PathProgramCache]: Analyzing trace with hash 548534729, now seen corresponding path program 1 times [2020-10-13 09:36:27,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:27,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652858921] [2020-10-13 09:36:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:29,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:29,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-13 09:36:29,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:36:29,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-10-13 09:36:29,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 09:36:29,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:36:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:29,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:29,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:29,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:29,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:29,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:29,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:36:29,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:29,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:29,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:29,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:36:29,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:36:29,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:36:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:29,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:29,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:36:29,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:29,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:36:29,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:29,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:36:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:36:29,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652858921] [2020-10-13 09:36:29,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:29,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:29,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660926517] [2020-10-13 09:36:29,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:29,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:29,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:29,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:29,764 INFO L87 Difference]: Start difference. First operand 3232 states and 4465 transitions. Second operand 5 states. [2020-10-13 09:36:42,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:42,899 INFO L93 Difference]: Finished difference Result 6075 states and 8544 transitions. [2020-10-13 09:36:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:42,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-13 09:36:42,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:42,922 INFO L225 Difference]: With dead ends: 6075 [2020-10-13 09:36:42,922 INFO L226 Difference]: Without dead ends: 3235 [2020-10-13 09:36:42,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:42,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2020-10-13 09:36:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3232. [2020-10-13 09:36:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3232 states. [2020-10-13 09:36:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4461 transitions. [2020-10-13 09:36:43,003 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4461 transitions. Word has length 220 [2020-10-13 09:36:43,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:43,004 INFO L479 AbstractCegarLoop]: Abstraction has 3232 states and 4461 transitions. [2020-10-13 09:36:43,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4461 transitions. [2020-10-13 09:36:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-13 09:36:43,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:43,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:36:43,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:36:43,009 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:43,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1332948515, now seen corresponding path program 1 times [2020-10-13 09:36:43,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:43,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123074144] [2020-10-13 09:36:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:43,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:43,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:36:43,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:36:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-13 09:36:43,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-13 09:36:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 09:36:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:44,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:44,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:44,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:44,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:44,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:36:44,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:44,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:44,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:44,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:44,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:44,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:36:44,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:44,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:36:44,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:44,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:44,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:36:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:44,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:44,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:36:44,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:36:44,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:36:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 09:36:44,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123074144] [2020-10-13 09:36:44,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:44,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:44,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614330777] [2020-10-13 09:36:44,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:44,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:44,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:44,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:44,357 INFO L87 Difference]: Start difference. First operand 3232 states and 4461 transitions. Second operand 5 states. [2020-10-13 09:37:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:05,182 INFO L93 Difference]: Finished difference Result 7808 states and 11376 transitions. [2020-10-13 09:37:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:05,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-13 09:37:05,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:05,210 INFO L225 Difference]: With dead ends: 7808 [2020-10-13 09:37:05,210 INFO L226 Difference]: Without dead ends: 5015 [2020-10-13 09:37:05,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:05,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5015 states. [2020-10-13 09:37:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5015 to 4141. [2020-10-13 09:37:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4141 states. [2020-10-13 09:37:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 5709 transitions. [2020-10-13 09:37:05,339 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 5709 transitions. Word has length 226 [2020-10-13 09:37:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:05,340 INFO L479 AbstractCegarLoop]: Abstraction has 4141 states and 5709 transitions. [2020-10-13 09:37:05,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 5709 transitions. [2020-10-13 09:37:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 09:37:05,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:05,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:37:05,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:37:05,348 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:05,349 INFO L82 PathProgramCache]: Analyzing trace with hash -578206980, now seen corresponding path program 1 times [2020-10-13 09:37:05,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:05,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320883123] [2020-10-13 09:37:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:05,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:10,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:10,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 09:37:10,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:37:10,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 09:37:10,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-13 09:37:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 09:37:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:10,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:10,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:10,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:10,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:10,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:37:10,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:10,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:10,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:10,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:10,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:37:10,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:37:10,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:37:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:10,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:10,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:37:10,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:37:10,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:10,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:10,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:10,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:37:10,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:37:10,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320883123] [2020-10-13 09:37:10,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:10,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:10,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94258392] [2020-10-13 09:37:10,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:10,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:10,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:10,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:10,835 INFO L87 Difference]: Start difference. First operand 4141 states and 5709 transitions. Second operand 5 states. [2020-10-13 09:37:30,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:30,446 INFO L93 Difference]: Finished difference Result 9642 states and 14023 transitions. [2020-10-13 09:37:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:30,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-13 09:37:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:30,476 INFO L225 Difference]: With dead ends: 9642 [2020-10-13 09:37:30,476 INFO L226 Difference]: Without dead ends: 5940 [2020-10-13 09:37:30,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2020-10-13 09:37:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5924. [2020-10-13 09:37:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5924 states. [2020-10-13 09:37:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 8185 transitions. [2020-10-13 09:37:30,620 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 8185 transitions. Word has length 227 [2020-10-13 09:37:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:30,621 INFO L479 AbstractCegarLoop]: Abstraction has 5924 states and 8185 transitions. [2020-10-13 09:37:30,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 8185 transitions. [2020-10-13 09:37:30,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 09:37:30,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:30,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:37:30,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:37:30,628 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:30,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:30,628 INFO L82 PathProgramCache]: Analyzing trace with hash -747686888, now seen corresponding path program 1 times [2020-10-13 09:37:30,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:30,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143234780] [2020-10-13 09:37:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:31,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:31,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:32,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:32,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-13 09:37:32,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:37:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2053 [2020-10-13 09:37:32,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 09:37:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:37:32,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:32,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:32,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:32,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:32,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:32,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:32,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:37:32,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:32,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:32,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:32,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:37:32,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:37:32,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:37:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:33,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:33,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:37:33,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:37:33,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:37:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:37:33,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143234780] [2020-10-13 09:37:33,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:33,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:33,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172489798] [2020-10-13 09:37:33,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:33,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:33,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:33,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:33,107 INFO L87 Difference]: Start difference. First operand 5924 states and 8185 transitions. Second operand 5 states. [2020-10-13 09:37:48,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:48,485 INFO L93 Difference]: Finished difference Result 11460 states and 16011 transitions. [2020-10-13 09:37:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:48,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-13 09:37:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:48,511 INFO L225 Difference]: With dead ends: 11460 [2020-10-13 09:37:48,511 INFO L226 Difference]: Without dead ends: 5927 [2020-10-13 09:37:48,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:48,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5927 states. [2020-10-13 09:37:48,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5927 to 5924. [2020-10-13 09:37:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5924 states. [2020-10-13 09:37:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 8181 transitions. [2020-10-13 09:37:48,644 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 8181 transitions. Word has length 229 [2020-10-13 09:37:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:48,645 INFO L479 AbstractCegarLoop]: Abstraction has 5924 states and 8181 transitions. [2020-10-13 09:37:48,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 8181 transitions. [2020-10-13 09:37:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-13 09:37:48,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:48,650 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:37:48,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:37:48,651 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:48,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1025139861, now seen corresponding path program 1 times [2020-10-13 09:37:48,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:48,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213411158] [2020-10-13 09:37:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:49,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:49,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 09:37:49,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:49,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-13 09:37:49,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:37:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:37:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:37:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:49,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:49,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:49,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:49,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:49,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:37:49,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:49,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:49,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:49,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:49,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:49,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:37:49,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:49,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:37:49,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:49,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:49,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:49,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:37:49,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:49,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:37:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:49,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:49,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:49,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:37:49,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:37:49,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:37:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:37:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:37:49,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213411158] [2020-10-13 09:37:49,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:49,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:37:49,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860320296] [2020-10-13 09:37:49,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:37:49,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:49,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:37:49,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:37:49,615 INFO L87 Difference]: Start difference. First operand 5924 states and 8181 transitions. Second operand 7 states. [2020-10-13 09:38:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:38:14,697 INFO L93 Difference]: Finished difference Result 15672 states and 23959 transitions. [2020-10-13 09:38:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:38:14,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-13 09:38:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:38:14,770 INFO L225 Difference]: With dead ends: 15672 [2020-10-13 09:38:14,770 INFO L226 Difference]: Without dead ends: 10187 [2020-10-13 09:38:14,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:38:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10187 states. [2020-10-13 09:38:15,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10187 to 9980. [2020-10-13 09:38:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9980 states. [2020-10-13 09:38:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9980 states to 9980 states and 13466 transitions. [2020-10-13 09:38:15,056 INFO L78 Accepts]: Start accepts. Automaton has 9980 states and 13466 transitions. Word has length 230 [2020-10-13 09:38:15,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:38:15,057 INFO L479 AbstractCegarLoop]: Abstraction has 9980 states and 13466 transitions. [2020-10-13 09:38:15,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:38:15,057 INFO L276 IsEmpty]: Start isEmpty. Operand 9980 states and 13466 transitions. [2020-10-13 09:38:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-13 09:38:15,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:38:15,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:38:15,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:38:15,066 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:38:15,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:38:15,066 INFO L82 PathProgramCache]: Analyzing trace with hash 767783059, now seen corresponding path program 1 times [2020-10-13 09:38:15,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:38:15,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330182892] [2020-10-13 09:38:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:38:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:16,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:16,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-13 09:38:16,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:38:16,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1726 [2020-10-13 09:38:16,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:38:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-13 09:38:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:38:16,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:38:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:16,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:16,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:16,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:38:16,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:16,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:38:16,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:38:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:38:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:17,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:38:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:38:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:17,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:38:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:17,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:17,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:38:17,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:38:17,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:38:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-13 09:38:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:17,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:17,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:38:17,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:17,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:38:17,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:38:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:38:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:38:17,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:38:17,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330182892] [2020-10-13 09:38:17,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:38:17,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:38:17,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280680503] [2020-10-13 09:38:17,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:38:17,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:38:17,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:38:17,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:38:17,472 INFO L87 Difference]: Start difference. First operand 9980 states and 13466 transitions. Second operand 8 states.