/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/Problem12_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:21:21,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:21:21,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:21:21,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:21:21,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:21:21,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:21:21,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:21:21,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:21:21,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:21:21,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:21:21,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:21:21,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:21:21,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:21:21,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:21:21,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:21:21,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:21:21,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:21:21,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:21:21,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:21:21,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:21:21,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:21:21,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:21:21,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:21:21,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:21:21,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:21:21,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:21:21,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:21:21,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:21:21,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:21:21,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:21:21,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:21:21,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:21:21,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:21:21,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:21:21,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:21:21,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:21:21,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:21:21,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:21:21,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:21:21,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:21:21,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:21:21,256 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 08:21:21,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:21:21,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:21:21,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:21:21,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:21:21,305 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:21:21,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:21:21,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:21:21,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:21:21,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:21:21,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:21:21,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:21:21,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:21:21,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:21:21,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:21:21,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:21:21,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:21:21,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:21:21,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:21:21,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:21:21,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:21:21,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:21:21,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:21:21,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:21:21,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:21:21,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:21:21,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:21:21,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:21:21,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:21:21,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:21:21,311 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 08:21:21,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:21:21,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:21:21,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:21:21,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:21:21,633 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:21:21,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-13 08:21:21,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e264bbf12/cfa9117e874b4ebebf6e40fc87115412/FLAG244add487 [2020-10-13 08:21:22,528 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:21:22,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2020-10-13 08:21:22,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e264bbf12/cfa9117e874b4ebebf6e40fc87115412/FLAG244add487 [2020-10-13 08:21:23,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e264bbf12/cfa9117e874b4ebebf6e40fc87115412 [2020-10-13 08:21:23,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:21:23,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:21:23,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:21:23,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:21:23,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:21:23,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:21:23" (1/1) ... [2020-10-13 08:21:23,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ad94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:23, skipping insertion in model container [2020-10-13 08:21:23,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:21:23" (1/1) ... [2020-10-13 08:21:23,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:21:23,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:21:24,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:21:24,840 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:21:25,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:21:25,539 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:21:25,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25 WrapperNode [2020-10-13 08:21:25,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:21:25,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:21:25,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:21:25,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:21:25,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25" (1/1) ... [2020-10-13 08:21:25,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25" (1/1) ... [2020-10-13 08:21:25,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25" (1/1) ... [2020-10-13 08:21:25,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25" (1/1) ... [2020-10-13 08:21:25,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25" (1/1) ... [2020-10-13 08:21:25,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25" (1/1) ... [2020-10-13 08:21:25,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25" (1/1) ... [2020-10-13 08:21:25,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:21:25,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:21:25,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:21:25,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:21:25,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25" (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 08:21:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:21:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:21:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:21:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:21:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:21:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:21:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:21:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:21:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:21:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:21:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:21:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:21:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:21:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:21:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:21:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:21:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:21:31,083 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:21:31,084 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:21:31,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:21:31 BoogieIcfgContainer [2020-10-13 08:21:31,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:21:31,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:21:31,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:21:31,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:21:31,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:21:23" (1/3) ... [2020-10-13 08:21:31,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304ef23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:21:31, skipping insertion in model container [2020-10-13 08:21:31,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:21:25" (2/3) ... [2020-10-13 08:21:31,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304ef23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:21:31, skipping insertion in model container [2020-10-13 08:21:31,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:21:31" (3/3) ... [2020-10-13 08:21:31,107 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label30.c [2020-10-13 08:21:31,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:21:31,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:21:31,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:21:31,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:21:31,179 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:21:31,179 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:21:31,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:21:31,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:21:31,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:21:31,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:21:31,180 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:21:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:21:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 08:21:31,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:31,228 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] [2020-10-13 08:21:31,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:31,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:31,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1416358702, now seen corresponding path program 1 times [2020-10-13 08:21:31,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:31,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276614650] [2020-10-13 08:21:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:31,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 08:21:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-13 08:21:31,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:21:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:21:31,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:21:31,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:21:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:32,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:32,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:32,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:21:32,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:21:32,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:32,032 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 08:21:32,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276614650] [2020-10-13 08:21:32,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:21:32,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:21:32,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417535563] [2020-10-13 08:21:32,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:21:32,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:32,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:21:32,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:21:32,062 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:21:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:40,832 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-13 08:21:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:40,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-13 08:21:40,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:40,882 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:21:40,883 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:21:40,897 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 08:21:40,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:21:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-13 08:21:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-13 08:21:41,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-13 08:21:41,079 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 31 [2020-10-13 08:21:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:41,080 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-13 08:21:41,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:21:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-13 08:21:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 08:21:41,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:41,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:41,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:21:41,089 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:41,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:41,089 INFO L82 PathProgramCache]: Analyzing trace with hash 270331659, now seen corresponding path program 1 times [2020-10-13 08:21:41,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:41,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962594153] [2020-10-13 08:21:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:41,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:41,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:41,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 08:21:41,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:21:41,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-13 08:21:41,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:21:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:21:41,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:41,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:41,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:41,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:41,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:21:41,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:41,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:41,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:21:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:42,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:42,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:21:42,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:21:42,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:21:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 08:21:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:21:42,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962594153] [2020-10-13 08:21:42,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:42,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:42,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618353966] [2020-10-13 08:21:42,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:42,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:42,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:42,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:42,134 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 5 states. [2020-10-13 08:21:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:21:51,739 INFO L93 Difference]: Finished difference Result 4673 states and 7281 transitions. [2020-10-13 08:21:51,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:21:51,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 08:21:51,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:21:51,770 INFO L225 Difference]: With dead ends: 4673 [2020-10-13 08:21:51,771 INFO L226 Difference]: Without dead ends: 3124 [2020-10-13 08:21:51,778 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 08:21:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-10-13 08:21:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3117. [2020-10-13 08:21:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2020-10-13 08:21:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4281 transitions. [2020-10-13 08:21:51,896 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4281 transitions. Word has length 106 [2020-10-13 08:21:51,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:21:51,897 INFO L479 AbstractCegarLoop]: Abstraction has 3117 states and 4281 transitions. [2020-10-13 08:21:51,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:21:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4281 transitions. [2020-10-13 08:21:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 08:21:51,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:21:51,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:51,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:21:51,935 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:21:51,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:21:51,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1580646199, now seen corresponding path program 1 times [2020-10-13 08:21:51,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:21:51,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379009439] [2020-10-13 08:21:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:21:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:52,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:52,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:52,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:21:52,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:21:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-10-13 08:21:52,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:21:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 08:21:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:21:52,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:52,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:21:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:52,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:52,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:52,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:21:52,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:52,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:21:52,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:52,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:21:52,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:52,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:21:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:21:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:21:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:21:52,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:21:53,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:21:53,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:21:53,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:21:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:21:53,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:21:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:21:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:21:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:21:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:21:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:21:53,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379009439] [2020-10-13 08:21:53,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:21:53,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:21:53,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456129139] [2020-10-13 08:21:53,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:21:53,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:21:53,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:21:53,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:21:53,150 INFO L87 Difference]: Start difference. First operand 3117 states and 4281 transitions. Second operand 5 states. [2020-10-13 08:22:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:04,330 INFO L93 Difference]: Finished difference Result 9349 states and 13005 transitions. [2020-10-13 08:22:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:04,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 08:22:04,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:04,369 INFO L225 Difference]: With dead ends: 9349 [2020-10-13 08:22:04,369 INFO L226 Difference]: Without dead ends: 6238 [2020-10-13 08:22:04,378 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 08:22:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-10-13 08:22:04,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6234. [2020-10-13 08:22:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6234 states. [2020-10-13 08:22:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 8312 transitions. [2020-10-13 08:22:04,573 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 8312 transitions. Word has length 112 [2020-10-13 08:22:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:04,576 INFO L479 AbstractCegarLoop]: Abstraction has 6234 states and 8312 transitions. [2020-10-13 08:22:04,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:04,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 8312 transitions. [2020-10-13 08:22:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 08:22:04,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:04,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:04,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:22:04,590 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:04,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1317078883, now seen corresponding path program 1 times [2020-10-13 08:22:04,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:04,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249822537] [2020-10-13 08:22:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:05,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:05,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 08:22:05,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:22:05,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-10-13 08:22:05,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 08:22:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:22:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:05,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:05,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:05,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:05,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:05,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:05,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:22:05,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:05,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:05,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:22:05,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:22:05,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:22:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:22:05,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249822537] [2020-10-13 08:22:05,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:05,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:05,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430361962] [2020-10-13 08:22:05,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:05,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:05,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:05,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:05,837 INFO L87 Difference]: Start difference. First operand 6234 states and 8312 transitions. Second operand 5 states. [2020-10-13 08:22:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:17,302 INFO L93 Difference]: Finished difference Result 18677 states and 25385 transitions. [2020-10-13 08:22:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:17,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 08:22:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:17,368 INFO L225 Difference]: With dead ends: 18677 [2020-10-13 08:22:17,369 INFO L226 Difference]: Without dead ends: 12449 [2020-10-13 08:22:17,388 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 08:22:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2020-10-13 08:22:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12441. [2020-10-13 08:22:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12441 states. [2020-10-13 08:22:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 16226 transitions. [2020-10-13 08:22:17,739 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 16226 transitions. Word has length 118 [2020-10-13 08:22:17,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:17,740 INFO L479 AbstractCegarLoop]: Abstraction has 12441 states and 16226 transitions. [2020-10-13 08:22:17,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:17,740 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 16226 transitions. [2020-10-13 08:22:17,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-13 08:22:17,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:17,748 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:22:17,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:22:17,748 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:17,749 INFO L82 PathProgramCache]: Analyzing trace with hash -515432282, now seen corresponding path program 1 times [2020-10-13 08:22:17,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:17,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478855892] [2020-10-13 08:22:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:21,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:21,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:21,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 08:22:21,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:22:21,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4188 [2020-10-13 08:22:21,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-13 08:22:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:22:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:22,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:22,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:22,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:22,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:22,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:22,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:22:22,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:22,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:22,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:22,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:22:22,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:22:22,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:22,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 08:22:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:22,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 08:22:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:22:22,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:22:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 08:22:22,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478855892] [2020-10-13 08:22:22,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:22,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:22:22,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634832243] [2020-10-13 08:22:22,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:22:22,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:22,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:22:22,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:22:22,390 INFO L87 Difference]: Start difference. First operand 12441 states and 16226 transitions. Second operand 5 states. [2020-10-13 08:22:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:35,057 INFO L93 Difference]: Finished difference Result 31075 states and 42171 transitions. [2020-10-13 08:22:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:22:35,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-13 08:22:35,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:35,135 INFO L225 Difference]: With dead ends: 31075 [2020-10-13 08:22:35,135 INFO L226 Difference]: Without dead ends: 18640 [2020-10-13 08:22:35,165 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 08:22:35,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18640 states. [2020-10-13 08:22:35,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18640 to 18632. [2020-10-13 08:22:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18632 states. [2020-10-13 08:22:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18632 states to 18632 states and 23488 transitions. [2020-10-13 08:22:35,567 INFO L78 Accepts]: Start accepts. Automaton has 18632 states and 23488 transitions. Word has length 203 [2020-10-13 08:22:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:35,568 INFO L479 AbstractCegarLoop]: Abstraction has 18632 states and 23488 transitions. [2020-10-13 08:22:35,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:22:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 18632 states and 23488 transitions. [2020-10-13 08:22:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 08:22:35,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:35,575 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:22:35,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:22:35,576 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:35,576 INFO L82 PathProgramCache]: Analyzing trace with hash 670985355, now seen corresponding path program 1 times [2020-10-13 08:22:35,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:35,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955956866] [2020-10-13 08:22:35,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:35,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:36,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:37,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:37,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-13 08:22:37,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:22:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-13 08:22:37,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:22:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-13 08:22:37,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:22:37,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:37,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:22:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:37,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:37,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:37,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:22:37,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:37,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:22:37,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:37,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:22:37,684 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-13 08:22:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:22:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:37,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:22:37,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:22:37,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:22:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:22:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:22:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:37,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:22:37,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:22:37,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:22:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:22:37,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:22:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:22:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:22:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 08:22:37,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:22:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:22:37,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955956866] [2020-10-13 08:22:37,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:22:37,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:22:37,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453500604] [2020-10-13 08:22:37,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:22:37,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:22:37,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:22:37,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:22:37,956 INFO L87 Difference]: Start difference. First operand 18632 states and 23488 transitions. Second operand 6 states. [2020-10-13 08:22:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:22:56,815 INFO L93 Difference]: Finished difference Result 45030 states and 58223 transitions. [2020-10-13 08:22:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:22:56,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2020-10-13 08:22:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:22:56,954 INFO L225 Difference]: With dead ends: 45030 [2020-10-13 08:22:56,955 INFO L226 Difference]: Without dead ends: 26404 [2020-10-13 08:22:57,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:22:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26404 states. [2020-10-13 08:22:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26404 to 26396. [2020-10-13 08:22:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26396 states. [2020-10-13 08:22:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26396 states to 26396 states and 33807 transitions. [2020-10-13 08:22:57,656 INFO L78 Accepts]: Start accepts. Automaton has 26396 states and 33807 transitions. Word has length 220 [2020-10-13 08:22:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:22:57,657 INFO L479 AbstractCegarLoop]: Abstraction has 26396 states and 33807 transitions. [2020-10-13 08:22:57,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:22:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 26396 states and 33807 transitions. [2020-10-13 08:22:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-13 08:22:57,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:22:57,672 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:22:57,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:22:57,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:22:57,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:22:57,674 INFO L82 PathProgramCache]: Analyzing trace with hash -714967842, now seen corresponding path program 1 times [2020-10-13 08:22:57,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:22:57,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259836407] [2020-10-13 08:22:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:22:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:22:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:22:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:00,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 08:23:00,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:23:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2564 [2020-10-13 08:23:00,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 264 [2020-10-13 08:23:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:23:00,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:00,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:00,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:00,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:23:00,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:00,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:00,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:00,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:23:00,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:00,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:23:00,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:00,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:00,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:23:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:00,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:00,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:23:00,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:00,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 08:23:00,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:00,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 08:23:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:23:00,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259836407] [2020-10-13 08:23:00,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:00,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:00,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452924599] [2020-10-13 08:23:00,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:00,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:00,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:00,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:00,960 INFO L87 Difference]: Start difference. First operand 26396 states and 33807 transitions. Second operand 5 states. [2020-10-13 08:23:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:16,498 INFO L93 Difference]: Finished difference Result 65167 states and 86159 transitions. [2020-10-13 08:23:16,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:16,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2020-10-13 08:23:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:16,655 INFO L225 Difference]: With dead ends: 65167 [2020-10-13 08:23:16,656 INFO L226 Difference]: Without dead ends: 38777 [2020-10-13 08:23:16,708 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 08:23:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38777 states. [2020-10-13 08:23:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38777 to 38002. [2020-10-13 08:23:17,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38002 states. [2020-10-13 08:23:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38002 states to 38002 states and 48109 transitions. [2020-10-13 08:23:17,711 INFO L78 Accepts]: Start accepts. Automaton has 38002 states and 48109 transitions. Word has length 283 [2020-10-13 08:23:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:17,712 INFO L479 AbstractCegarLoop]: Abstraction has 38002 states and 48109 transitions. [2020-10-13 08:23:17,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 38002 states and 48109 transitions. [2020-10-13 08:23:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 08:23:17,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:17,740 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:17,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:23:17,741 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:17,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:17,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1557212041, now seen corresponding path program 1 times [2020-10-13 08:23:17,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:17,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623807163] [2020-10-13 08:23:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:18,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:18,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:22,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:22,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-13 08:23:22,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:23:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 08:23:22,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 08:23:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:23:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:22,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:22,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:22,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:22,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:22,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:23:22,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:22,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:23,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:23:23,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:23:23,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 08:23:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:23,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:23,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 08:23:23,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-13 08:23:23,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-13 08:23:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 08:23:23,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623807163] [2020-10-13 08:23:23,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:23,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:23,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906483039] [2020-10-13 08:23:23,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:23,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:23,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:23,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:23,654 INFO L87 Difference]: Start difference. First operand 38002 states and 48109 transitions. Second operand 5 states. [2020-10-13 08:23:38,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:23:38,596 INFO L93 Difference]: Finished difference Result 89162 states and 117237 transitions. [2020-10-13 08:23:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:23:38,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-13 08:23:38,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:23:38,809 INFO L225 Difference]: With dead ends: 89162 [2020-10-13 08:23:38,810 INFO L226 Difference]: Without dead ends: 51166 [2020-10-13 08:23:38,869 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 08:23:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51166 states. [2020-10-13 08:23:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51166 to 51158. [2020-10-13 08:23:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51158 states. [2020-10-13 08:23:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51158 states to 51158 states and 64433 transitions. [2020-10-13 08:23:39,843 INFO L78 Accepts]: Start accepts. Automaton has 51158 states and 64433 transitions. Word has length 322 [2020-10-13 08:23:39,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:23:39,844 INFO L479 AbstractCegarLoop]: Abstraction has 51158 states and 64433 transitions. [2020-10-13 08:23:39,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:23:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 51158 states and 64433 transitions. [2020-10-13 08:23:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-13 08:23:39,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:23:39,876 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:23:39,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:23:39,876 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:23:39,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:23:39,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1838195923, now seen corresponding path program 1 times [2020-10-13 08:23:39,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:23:39,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324786162] [2020-10-13 08:23:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:23:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:39,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:40,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:40,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:44,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:44,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:44,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-13 08:23:44,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:23:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 08:23:44,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:23:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 333 [2020-10-13 08:23:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:23:44,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:45,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:23:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:45,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:45,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:23:45,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:45,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:23:45,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:45,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:23:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:45,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:45,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:23:45,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:23:45,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:23:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:45,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:23:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:23:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 08:23:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:23:45,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:23:45,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:23:45,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-13 08:23:45,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:23:45,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-13 08:23:45,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:23:45,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:23:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:23:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-13 08:23:45,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:23:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 08:23:45,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324786162] [2020-10-13 08:23:45,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:23:45,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:23:45,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378309280] [2020-10-13 08:23:45,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:23:45,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:23:45,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:23:45,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:23:45,762 INFO L87 Difference]: Start difference. First operand 51158 states and 64433 transitions. Second operand 5 states. [2020-10-13 08:24:03,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:03,118 INFO L93 Difference]: Finished difference Result 115478 states and 150261 transitions. [2020-10-13 08:24:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:03,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 352 [2020-10-13 08:24:03,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:03,360 INFO L225 Difference]: With dead ends: 115478 [2020-10-13 08:24:03,360 INFO L226 Difference]: Without dead ends: 64326 [2020-10-13 08:24:05,058 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 08:24:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64326 states. [2020-10-13 08:24:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64326 to 60483. [2020-10-13 08:24:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60483 states. [2020-10-13 08:24:06,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60483 states to 60483 states and 75785 transitions. [2020-10-13 08:24:06,234 INFO L78 Accepts]: Start accepts. Automaton has 60483 states and 75785 transitions. Word has length 352 [2020-10-13 08:24:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:06,236 INFO L479 AbstractCegarLoop]: Abstraction has 60483 states and 75785 transitions. [2020-10-13 08:24:06,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 60483 states and 75785 transitions. [2020-10-13 08:24:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-13 08:24:06,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:06,355 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:06,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:24:06,356 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:06,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:06,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1339903442, now seen corresponding path program 1 times [2020-10-13 08:24:06,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:06,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130893453] [2020-10-13 08:24:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:07,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:08,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:11,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:11,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-13 08:24:11,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:24:11,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-13 08:24:11,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:24:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 582 [2020-10-13 08:24:11,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 08:24:11,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:24:11,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:11,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:11,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:11,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:24:11,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:11,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:11,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:11,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:11,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:24:11,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:11,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:24:11,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:24:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:24:11,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:11,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 08:24:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:12,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:12,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-13 08:24:12,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:12,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-13 08:24:12,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:12,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 484 [2020-10-13 08:24:12,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:12,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:24:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:12,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-13 08:24:12,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-13 08:24:12,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 08:24:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 08:24:13,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130893453] [2020-10-13 08:24:13,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:24:13,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:24:13,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754620440] [2020-10-13 08:24:13,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:24:13,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:13,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:24:13,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:24:13,412 INFO L87 Difference]: Start difference. First operand 60483 states and 75785 transitions. Second operand 5 states. [2020-10-13 08:24:32,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:24:32,630 INFO L93 Difference]: Finished difference Result 149544 states and 191564 transitions. [2020-10-13 08:24:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:24:32,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 602 [2020-10-13 08:24:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:24:32,867 INFO L225 Difference]: With dead ends: 149544 [2020-10-13 08:24:32,868 INFO L226 Difference]: Without dead ends: 89067 [2020-10-13 08:24:32,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 08:24:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89067 states. [2020-10-13 08:24:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89067 to 89063. [2020-10-13 08:24:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89063 states. [2020-10-13 08:24:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89063 states to 89063 states and 109481 transitions. [2020-10-13 08:24:34,171 INFO L78 Accepts]: Start accepts. Automaton has 89063 states and 109481 transitions. Word has length 602 [2020-10-13 08:24:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:24:34,173 INFO L479 AbstractCegarLoop]: Abstraction has 89063 states and 109481 transitions. [2020-10-13 08:24:34,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:24:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 89063 states and 109481 transitions. [2020-10-13 08:24:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2020-10-13 08:24:34,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:24:34,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:34,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:24:34,228 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:24:34,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:24:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash 148388255, now seen corresponding path program 1 times [2020-10-13 08:24:34,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:24:34,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306397839] [2020-10-13 08:24:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:24:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:34,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:39,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:39,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 680 [2020-10-13 08:24:39,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:39,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5292 [2020-10-13 08:24:39,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:39,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:24:39,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:24:39,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 639 [2020-10-13 08:24:39,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:24:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:39,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:39,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:24:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:24:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:24:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:24:39,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:24:39,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:39,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:24:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:44,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:44,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 640 [2020-10-13 08:24:44,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:24:44,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 08:24:44,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 08:24:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:24:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 640 [2020-10-13 08:24:44,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:24:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:45,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:45,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-13 08:24:45,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:45,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-13 08:24:45,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:45,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:24:45,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:24:45,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 352 [2020-10-13 08:24:45,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:45,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:24:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:24:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:24:46,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:24:46,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:24:46,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:24:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 08:24:46,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:24:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:24:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:24:46,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:24:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:24:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:24:46,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306397839] [2020-10-13 08:24:46,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:24:46,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:24:46,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026588890] [2020-10-13 08:24:46,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:24:46,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:24:46,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:24:46,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:24:46,742 INFO L87 Difference]: Start difference. First operand 89063 states and 109481 transitions. Second operand 7 states.