/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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:13,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:13,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:13,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:13,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:13,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:13,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:13,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:13,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:13,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:13,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:13,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:13,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:13,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:13,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:13,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:13,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:13,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:13,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:14,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:14,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:14,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:14,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:14,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:14,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:14,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:14,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:14,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:14,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:14,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:14,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:14,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:14,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:14,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:14,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:14,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:14,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:14,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:14,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:14,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:14,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:14,039 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 [2020-09-24 18:21:14,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:14,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:14,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:14,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:14,088 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:14,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:14,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:14,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:14,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:14,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:14,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:14,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:14,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:14,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:14,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:14,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:14,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:14,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:14,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:14,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:14,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:14,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:14,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:14,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:14,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:14,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:14,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:14,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:14,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:14,095 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:21:14,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:14,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:14,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:14,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:14,570 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:14,571 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-24 18:21:14,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ef4c2a66/1ea0aeba791c415d8bea451191de941b/FLAG7d47498c0 [2020-09-24 18:21:15,298 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:15,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-24 18:21:15,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ef4c2a66/1ea0aeba791c415d8bea451191de941b/FLAG7d47498c0 [2020-09-24 18:21:15,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ef4c2a66/1ea0aeba791c415d8bea451191de941b [2020-09-24 18:21:15,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:15,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:15,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:15,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:15,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:15,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:15" (1/1) ... [2020-09-24 18:21:15,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:15, skipping insertion in model container [2020-09-24 18:21:15,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:15" (1/1) ... [2020-09-24 18:21:15,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:15,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:16,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:16,110 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:16,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:16,374 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:16,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16 WrapperNode [2020-09-24 18:21:16,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:16,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:16,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:16,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:16,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:16,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:16,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:16,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:16,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (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 [2020-09-24 18:21:16,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:16,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:16,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:16,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:16,593 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:17,993 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:17,994 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:18,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:18 BoogieIcfgContainer [2020-09-24 18:21:18,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:18,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:18,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:18,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:18,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:15" (1/3) ... [2020-09-24 18:21:18,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:18, skipping insertion in model container [2020-09-24 18:21:18,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (2/3) ... [2020-09-24 18:21:18,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:18, skipping insertion in model container [2020-09-24 18:21:18,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:18" (3/3) ... [2020-09-24 18:21:18,014 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2020-09-24 18:21:18,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:18,039 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:18,064 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:18,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:18,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:18,103 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:18,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:18,103 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:18,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:18,103 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:18,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 18:21:18,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:18,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:18,163 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:18,172 INFO L82 PathProgramCache]: Analyzing trace with hash -361381607, now seen corresponding path program 1 times [2020-09-24 18:21:18,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:18,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-24 18:21:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:18,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:23,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 18:21:23,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:21:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:21:23,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:23,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:23,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:21:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 18:21:23,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:21:23,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:23,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:23,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:23,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:23,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:21:23,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:21:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:23,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-24 18:21:23,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:23,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:23,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47237086] [2020-09-24 18:21:23,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:23,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:23,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:23,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:23,887 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:21:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:26,207 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-24 18:21:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:26,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-24 18:21:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:26,236 INFO L225 Difference]: With dead ends: 1248 [2020-09-24 18:21:26,236 INFO L226 Difference]: Without dead ends: 670 [2020-09-24 18:21:26,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:26,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-24 18:21:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-24 18:21:26,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 18:21:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 18:21:26,385 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 132 [2020-09-24 18:21:26,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:26,391 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 18:21:26,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 18:21:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 18:21:26,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:26,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:26,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:26,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:26,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:26,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1299798958, now seen corresponding path program 1 times [2020-09-24 18:21:26,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:26,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959994064] [2020-09-24 18:21:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:31,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-24 18:21:31,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:21:31,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 18:21:31,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:21:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 18:21:31,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:31,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:31,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:31,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:21:31,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:31,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:31,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:31,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:21:31,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:21:31,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:21:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:31,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959994064] [2020-09-24 18:21:31,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:31,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:31,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049797699] [2020-09-24 18:21:31,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:31,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:31,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:31,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:31,784 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 18:21:33,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:33,953 INFO L93 Difference]: Finished difference Result 1400 states and 1694 transitions. [2020-09-24 18:21:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:33,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-24 18:21:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:33,962 INFO L225 Difference]: With dead ends: 1400 [2020-09-24 18:21:33,962 INFO L226 Difference]: Without dead ends: 801 [2020-09-24 18:21:33,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-24 18:21:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2020-09-24 18:21:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-24 18:21:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 898 transitions. [2020-09-24 18:21:33,999 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 898 transitions. Word has length 149 [2020-09-24 18:21:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:33,999 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 898 transitions. [2020-09-24 18:21:33,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 898 transitions. [2020-09-24 18:21:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 18:21:34,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:34,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:34,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:34,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:34,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:34,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1730286085, now seen corresponding path program 1 times [2020-09-24 18:21:34,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:34,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458183764] [2020-09-24 18:21:34,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 18:21:39,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:21:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:21:39,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:39,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:21:39,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 18:21:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:39,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:39,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:39,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:39,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:39,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:21:39,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:21:39,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:21:39,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:39,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458183764] [2020-09-24 18:21:39,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:39,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:39,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661879561] [2020-09-24 18:21:39,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:39,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:39,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:39,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:39,313 INFO L87 Difference]: Start difference. First operand 776 states and 898 transitions. Second operand 5 states. [2020-09-24 18:21:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:41,614 INFO L93 Difference]: Finished difference Result 2094 states and 2489 transitions. [2020-09-24 18:21:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:41,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-24 18:21:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:41,624 INFO L225 Difference]: With dead ends: 2094 [2020-09-24 18:21:41,624 INFO L226 Difference]: Without dead ends: 1340 [2020-09-24 18:21:41,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2020-09-24 18:21:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1242. [2020-09-24 18:21:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1242 states. [2020-09-24 18:21:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1463 transitions. [2020-09-24 18:21:41,673 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1463 transitions. Word has length 154 [2020-09-24 18:21:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:41,674 INFO L479 AbstractCegarLoop]: Abstraction has 1242 states and 1463 transitions. [2020-09-24 18:21:41,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:41,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1463 transitions. [2020-09-24 18:21:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 18:21:41,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:41,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:41,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:41,679 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:41,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1793331210, now seen corresponding path program 1 times [2020-09-24 18:21:41,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:41,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470730795] [2020-09-24 18:21:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:44,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:46,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-24 18:21:46,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:21:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:21:46,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:21:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 18:21:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:46,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:46,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:46,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:46,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:46,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:46,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:46,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:46,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:46,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:21:46,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:46,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:21:46,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:21:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:47,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470730795] [2020-09-24 18:21:47,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:47,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:47,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156816394] [2020-09-24 18:21:47,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:47,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:47,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:47,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:47,005 INFO L87 Difference]: Start difference. First operand 1242 states and 1463 transitions. Second operand 5 states. [2020-09-24 18:21:48,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:48,762 INFO L93 Difference]: Finished difference Result 3229 states and 3926 transitions. [2020-09-24 18:21:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:48,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-24 18:21:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:48,776 INFO L225 Difference]: With dead ends: 3229 [2020-09-24 18:21:48,776 INFO L226 Difference]: Without dead ends: 2009 [2020-09-24 18:21:48,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2020-09-24 18:21:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1697. [2020-09-24 18:21:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1697 states. [2020-09-24 18:21:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2102 transitions. [2020-09-24 18:21:48,872 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2102 transitions. Word has length 161 [2020-09-24 18:21:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:48,873 INFO L479 AbstractCegarLoop]: Abstraction has 1697 states and 2102 transitions. [2020-09-24 18:21:48,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2102 transitions. [2020-09-24 18:21:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 18:21:48,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:48,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:48,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:48,884 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:48,885 INFO L82 PathProgramCache]: Analyzing trace with hash -543288660, now seen corresponding path program 1 times [2020-09-24 18:21:48,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:48,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525724426] [2020-09-24 18:21:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:48,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:53,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 18:21:53,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4166 [2020-09-24 18:21:53,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-24 18:21:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 18:21:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:53,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:53,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:21:53,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:53,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:53,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:21:53,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 18:21:53,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 18:21:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:53,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525724426] [2020-09-24 18:21:53,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:53,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:21:53,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135647389] [2020-09-24 18:21:53,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:21:53,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:53,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:21:53,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:53,380 INFO L87 Difference]: Start difference. First operand 1697 states and 2102 transitions. Second operand 6 states. [2020-09-24 18:21:56,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:56,156 INFO L93 Difference]: Finished difference Result 5665 states and 7236 transitions. [2020-09-24 18:21:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:21:56,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2020-09-24 18:21:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:56,177 INFO L225 Difference]: With dead ends: 5665 [2020-09-24 18:21:56,177 INFO L226 Difference]: Without dead ends: 3990 [2020-09-24 18:21:56,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:21:56,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2020-09-24 18:21:56,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 3482. [2020-09-24 18:21:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3482 states. [2020-09-24 18:21:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 4280 transitions. [2020-09-24 18:21:56,291 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 4280 transitions. Word has length 201 [2020-09-24 18:21:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:56,292 INFO L479 AbstractCegarLoop]: Abstraction has 3482 states and 4280 transitions. [2020-09-24 18:21:56,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:21:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 4280 transitions. [2020-09-24 18:21:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-24 18:21:56,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:56,307 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:56,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:56,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:56,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:56,308 INFO L82 PathProgramCache]: Analyzing trace with hash 949054567, now seen corresponding path program 1 times [2020-09-24 18:21:56,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:56,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715436960] [2020-09-24 18:21:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:56,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:01,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-09-24 18:22:01,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:22:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:22:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:22:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:22:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:01,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:01,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:01,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:22:01,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:01,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:01,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:22:01,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:01,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:22:01,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:22:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:22:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:01,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:01,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:22:01,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:01,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:22:01,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:22:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:01,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:22:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:01,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:01,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:22:01,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:22:01,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 18:22:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 18:22:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:01,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-24 18:22:01,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 18:22:01,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 18:22:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 160 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-24 18:22:01,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715436960] [2020-09-24 18:22:01,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:01,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:01,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101599633] [2020-09-24 18:22:01,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:01,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:01,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:01,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:01,709 INFO L87 Difference]: Start difference. First operand 3482 states and 4280 transitions. Second operand 7 states. [2020-09-24 18:22:04,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:04,461 INFO L93 Difference]: Finished difference Result 7794 states and 9889 transitions. [2020-09-24 18:22:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:22:04,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-09-24 18:22:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:04,487 INFO L225 Difference]: With dead ends: 7794 [2020-09-24 18:22:04,488 INFO L226 Difference]: Without dead ends: 4334 [2020-09-24 18:22:04,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:22:04,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2020-09-24 18:22:04,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4300. [2020-09-24 18:22:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4300 states. [2020-09-24 18:22:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 5255 transitions. [2020-09-24 18:22:04,629 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 5255 transitions. Word has length 295 [2020-09-24 18:22:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:04,630 INFO L479 AbstractCegarLoop]: Abstraction has 4300 states and 5255 transitions. [2020-09-24 18:22:04,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:04,630 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 5255 transitions. [2020-09-24 18:22:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-09-24 18:22:04,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:04,657 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:04,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:22:04,657 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:04,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:04,658 INFO L82 PathProgramCache]: Analyzing trace with hash 820629781, now seen corresponding path program 1 times [2020-09-24 18:22:04,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:04,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374935417] [2020-09-24 18:22:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:04,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:04,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking...