/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:14:54,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:14:54,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:14:54,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:14:54,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:14:54,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:14:54,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:14:54,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:14:54,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:14:54,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:14:54,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:14:54,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:14:54,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:14:54,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:14:54,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:14:54,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:14:54,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:14:54,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:14:54,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:14:54,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:14:54,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:14:54,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:14:54,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:14:54,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:14:54,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:14:54,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:14:54,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:14:54,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:14:54,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:14:54,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:14:54,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:14:54,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:14:54,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:14:54,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:14:54,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:14:54,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:14:54,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:14:54,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:14:54,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:14:54,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:14:54,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:14:54,154 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 08:14:54,194 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:14:54,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:14:54,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:14:54,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:14:54,197 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:14:54,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:14:54,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:14:54,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:14:54,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:14:54,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:14:54,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:14:54,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:14:54,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:14:54,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:14:54,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:14:54,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:14:54,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:14:54,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:14:54,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:14:54,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:14:54,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:14:54,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:14:54,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:14:54,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:14:54,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:14:54,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:14:54,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:14:54,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:14:54,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:14:54,204 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 08:14:54,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:14:54,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:14:54,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:14:54,544 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:14:54,544 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:14:54,545 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label07.c [2020-10-13 08:14:54,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddf3da80c/5045fd7cbcf7427cb2a950297b2f5311/FLAG4ad56f0fc [2020-10-13 08:14:55,300 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:14:55,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label07.c [2020-10-13 08:14:55,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddf3da80c/5045fd7cbcf7427cb2a950297b2f5311/FLAG4ad56f0fc [2020-10-13 08:14:55,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddf3da80c/5045fd7cbcf7427cb2a950297b2f5311 [2020-10-13 08:14:55,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:14:55,475 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:14:55,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:14:55,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:14:55,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:14:55,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:55" (1/1) ... [2020-10-13 08:14:55,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:55, skipping insertion in model container [2020-10-13 08:14:55,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:14:55" (1/1) ... [2020-10-13 08:14:55,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:14:55,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:14:57,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:14:57,191 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:14:58,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:14:58,268 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:14:58,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58 WrapperNode [2020-10-13 08:14:58,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:14:58,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:14:58,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:14:58,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:14:58,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58" (1/1) ... [2020-10-13 08:14:58,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58" (1/1) ... [2020-10-13 08:14:58,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58" (1/1) ... [2020-10-13 08:14:58,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58" (1/1) ... [2020-10-13 08:14:58,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58" (1/1) ... [2020-10-13 08:14:58,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58" (1/1) ... [2020-10-13 08:14:58,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58" (1/1) ... [2020-10-13 08:14:58,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:14:58,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:14:58,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:14:58,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:14:58,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58" (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 08:14:58,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:14:58,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:14:58,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:14:58,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:14:58,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:14:58,580 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:14:58,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:14:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:14:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:14:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:14:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:14:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:14:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:14:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:14:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:14:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:14:58,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:15:03,606 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:15:03,606 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:15:03,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:15:03 BoogieIcfgContainer [2020-10-13 08:15:03,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:15:03,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:15:03,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:15:03,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:15:03,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:14:55" (1/3) ... [2020-10-13 08:15:03,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9046bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:15:03, skipping insertion in model container [2020-10-13 08:15:03,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:14:58" (2/3) ... [2020-10-13 08:15:03,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9046bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:15:03, skipping insertion in model container [2020-10-13 08:15:03,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:15:03" (3/3) ... [2020-10-13 08:15:03,638 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label07.c [2020-10-13 08:15:03,649 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:15:03,662 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:15:03,676 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:15:03,712 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:15:03,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:15:03,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:15:03,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:15:03,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:15:03,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:15:03,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:15:03,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:15:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:15:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 08:15:03,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:03,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:03,755 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:03,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash 336576653, now seen corresponding path program 1 times [2020-10-13 08:15:03,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:03,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784243644] [2020-10-13 08:15:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:04,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:04,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 08:15:04,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-13 08:15:04,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:15:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:15:04,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 08:15:04,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:15:04,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:04,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:04,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:04,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:04,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:15:04,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:04,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:15:04,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:04,297 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 08:15:04,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784243644] [2020-10-13 08:15:04,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:15:04,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:15:04,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17333249] [2020-10-13 08:15:04,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:15:04,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:04,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:15:04,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:15:04,323 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:15:12,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:12,721 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-13 08:15:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:12,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-13 08:15:12,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:12,761 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:15:12,761 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:15:12,770 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 08:15:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:15:12,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-13 08:15:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-13 08:15:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-13 08:15:12,922 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 12 [2020-10-13 08:15:12,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:12,922 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-13 08:15:12,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:15:12,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-13 08:15:12,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 08:15:12,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:12,927 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:15:12,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:15:12,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:12,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:12,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1239671147, now seen corresponding path program 1 times [2020-10-13 08:15:12,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:12,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414618899] [2020-10-13 08:15:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:13,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:13,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:13,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:13,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 08:15:13,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:15:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-13 08:15:13,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:13,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:15:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 08:15:13,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:13,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:13,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:13,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:13,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:13,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:13,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:15:13,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:13,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:13,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:13,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:13,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:13,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:13,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:13,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:13,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:15:13,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:13,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 08:15:13,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:15:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 08:15:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:13,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414618899] [2020-10-13 08:15:13,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:13,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:13,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181984335] [2020-10-13 08:15:13,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:13,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:13,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:13,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:13,973 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 5 states. [2020-10-13 08:15:23,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:23,078 INFO L93 Difference]: Finished difference Result 4673 states and 7281 transitions. [2020-10-13 08:15:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:23,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 08:15:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:23,097 INFO L225 Difference]: With dead ends: 4673 [2020-10-13 08:15:23,097 INFO L226 Difference]: Without dead ends: 3124 [2020-10-13 08:15:23,102 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 08:15:23,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-10-13 08:15:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3117. [2020-10-13 08:15:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2020-10-13 08:15:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4281 transitions. [2020-10-13 08:15:23,190 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4281 transitions. Word has length 87 [2020-10-13 08:15:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:23,191 INFO L479 AbstractCegarLoop]: Abstraction has 3117 states and 4281 transitions. [2020-10-13 08:15:23,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4281 transitions. [2020-10-13 08:15:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 08:15:23,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:23,195 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:15:23,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:15:23,195 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:23,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:23,196 INFO L82 PathProgramCache]: Analyzing trace with hash -141866711, now seen corresponding path program 1 times [2020-10-13 08:15:23,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:23,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466810913] [2020-10-13 08:15:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:23,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:23,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:24,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:24,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:15:24,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:15:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-13 08:15:24,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 08:15:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 08:15:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:24,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:24,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:24,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:15:24,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:24,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:24,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:24,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:15:24,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:15:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:15:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:24,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466810913] [2020-10-13 08:15:24,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:24,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:24,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497878655] [2020-10-13 08:15:24,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:24,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:24,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:24,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:24,372 INFO L87 Difference]: Start difference. First operand 3117 states and 4281 transitions. Second operand 5 states. [2020-10-13 08:15:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:34,438 INFO L93 Difference]: Finished difference Result 9342 states and 13008 transitions. [2020-10-13 08:15:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:34,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 08:15:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:34,475 INFO L225 Difference]: With dead ends: 9342 [2020-10-13 08:15:34,475 INFO L226 Difference]: Without dead ends: 6231 [2020-10-13 08:15:34,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 08:15:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6231 states. [2020-10-13 08:15:34,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6231 to 6220. [2020-10-13 08:15:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2020-10-13 08:15:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 8111 transitions. [2020-10-13 08:15:34,638 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 8111 transitions. Word has length 93 [2020-10-13 08:15:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:34,639 INFO L479 AbstractCegarLoop]: Abstraction has 6220 states and 8111 transitions. [2020-10-13 08:15:34,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:34,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 8111 transitions. [2020-10-13 08:15:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 08:15:34,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:34,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:34,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:15:34,642 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:34,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:34,642 INFO L82 PathProgramCache]: Analyzing trace with hash 254643133, now seen corresponding path program 1 times [2020-10-13 08:15:34,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:34,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440767773] [2020-10-13 08:15:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:35,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:35,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 08:15:35,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:15:35,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-13 08:15:35,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 08:15:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 08:15:35,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:35,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:35,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:35,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:35,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:35,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:15:35,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:35,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:35,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:35,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:35,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:35,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:15:35,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:35,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:15:35,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:35,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:15:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:35,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440767773] [2020-10-13 08:15:35,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:35,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:35,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415739800] [2020-10-13 08:15:35,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:35,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:35,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:35,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:35,951 INFO L87 Difference]: Start difference. First operand 6220 states and 8111 transitions. Second operand 5 states. [2020-10-13 08:15:46,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:15:46,602 INFO L93 Difference]: Finished difference Result 18645 states and 24772 transitions. [2020-10-13 08:15:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:15:46,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 08:15:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:15:46,660 INFO L225 Difference]: With dead ends: 18645 [2020-10-13 08:15:46,660 INFO L226 Difference]: Without dead ends: 12431 [2020-10-13 08:15:46,676 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 08:15:46,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12431 states. [2020-10-13 08:15:46,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12431 to 11656. [2020-10-13 08:15:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11656 states. [2020-10-13 08:15:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 14442 transitions. [2020-10-13 08:15:46,959 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 14442 transitions. Word has length 99 [2020-10-13 08:15:46,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:15:46,960 INFO L479 AbstractCegarLoop]: Abstraction has 11656 states and 14442 transitions. [2020-10-13 08:15:46,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:15:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 14442 transitions. [2020-10-13 08:15:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 08:15:46,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:46,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:15:46,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:15:46,976 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:46,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1655967080, now seen corresponding path program 1 times [2020-10-13 08:15:46,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:46,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761209806] [2020-10-13 08:15:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:48,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:48,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 08:15:48,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:15:48,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1347 [2020-10-13 08:15:48,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:15:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 08:15:48,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 08:15:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:48,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:48,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:48,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:48,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:48,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:15:48,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:15:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:15:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:48,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:15:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:48,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:48,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:15:48,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 08:15:48,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 08:15:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:15:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:15:48,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761209806] [2020-10-13 08:15:48,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:15:48,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:15:48,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873636275] [2020-10-13 08:15:48,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:48,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:48,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:48,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:48,761 INFO L87 Difference]: Start difference. First operand 11656 states and 14442 transitions. Second operand 5 states. [2020-10-13 08:16:00,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:00,966 INFO L93 Difference]: Finished difference Result 27958 states and 35707 transitions. [2020-10-13 08:16:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:00,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-13 08:16:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:01,018 INFO L225 Difference]: With dead ends: 27958 [2020-10-13 08:16:01,019 INFO L226 Difference]: Without dead ends: 16308 [2020-10-13 08:16:01,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 08:16:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16308 states. [2020-10-13 08:16:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16308 to 16292. [2020-10-13 08:16:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16292 states. [2020-10-13 08:16:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16292 states to 16292 states and 19560 transitions. [2020-10-13 08:16:01,360 INFO L78 Accepts]: Start accepts. Automaton has 16292 states and 19560 transitions. Word has length 160 [2020-10-13 08:16:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:01,361 INFO L479 AbstractCegarLoop]: Abstraction has 16292 states and 19560 transitions. [2020-10-13 08:16:01,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 16292 states and 19560 transitions. [2020-10-13 08:16:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 08:16:01,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:01,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:16:01,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:16:01,366 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:01,367 INFO L82 PathProgramCache]: Analyzing trace with hash -351031811, now seen corresponding path program 1 times [2020-10-13 08:16:01,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:01,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547859808] [2020-10-13 08:16:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:03,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:03,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-13 08:16:03,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:16:03,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-10-13 08:16:03,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-13 08:16:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 08:16:03,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:03,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:03,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:03,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:03,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:16:03,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:03,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:03,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:03,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:16:03,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:03,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:16:03,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:03,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:03,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:03,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 08:16:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:03,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:03,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:16:03,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:03,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:16:03,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 08:16:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 08:16:03,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547859808] [2020-10-13 08:16:03,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:03,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:16:03,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246549474] [2020-10-13 08:16:03,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:16:03,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:03,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:16:03,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:03,664 INFO L87 Difference]: Start difference. First operand 16292 states and 19560 transitions. Second operand 6 states. [2020-10-13 08:16:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:18,500 INFO L93 Difference]: Finished difference Result 38800 states and 48093 transitions. [2020-10-13 08:16:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:16:18,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2020-10-13 08:16:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:18,582 INFO L225 Difference]: With dead ends: 38800 [2020-10-13 08:16:18,582 INFO L226 Difference]: Without dead ends: 22514 [2020-10-13 08:16:18,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:16:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22514 states. [2020-10-13 08:16:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22514 to 22498. [2020-10-13 08:16:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22498 states. [2020-10-13 08:16:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22498 states to 22498 states and 27361 transitions. [2020-10-13 08:16:19,075 INFO L78 Accepts]: Start accepts. Automaton has 22498 states and 27361 transitions. Word has length 194 [2020-10-13 08:16:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:19,076 INFO L479 AbstractCegarLoop]: Abstraction has 22498 states and 27361 transitions. [2020-10-13 08:16:19,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:16:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 22498 states and 27361 transitions. [2020-10-13 08:16:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-13 08:16:19,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:19,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:19,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:16:19,081 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:19,082 INFO L82 PathProgramCache]: Analyzing trace with hash -311190947, now seen corresponding path program 1 times [2020-10-13 08:16:19,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:19,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269121200] [2020-10-13 08:16:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:22,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:22,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-13 08:16:22,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:16:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3676 [2020-10-13 08:16:22,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-13 08:16:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 08:16:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:22,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:22,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:22,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:22,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:22,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:16:22,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:22,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:22,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:22,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:22,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 08:16:22,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:22,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:16:22,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:22,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:22,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 08:16:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:23,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:23,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:16:23,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:23,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:16:23,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:16:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 08:16:23,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269121200] [2020-10-13 08:16:23,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:23,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:23,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433029130] [2020-10-13 08:16:23,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:23,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:23,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:23,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:23,143 INFO L87 Difference]: Start difference. First operand 22498 states and 27361 transitions. Second operand 5 states. [2020-10-13 08:16:38,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:38,077 INFO L93 Difference]: Finished difference Result 65143 states and 81324 transitions. [2020-10-13 08:16:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:38,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-13 08:16:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:38,209 INFO L225 Difference]: With dead ends: 65143 [2020-10-13 08:16:38,210 INFO L226 Difference]: Without dead ends: 42651 [2020-10-13 08:16:38,254 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 08:16:38,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42651 states. [2020-10-13 08:16:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42651 to 41105. [2020-10-13 08:16:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41105 states. [2020-10-13 08:16:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41105 states to 41105 states and 50653 transitions. [2020-10-13 08:16:38,980 INFO L78 Accepts]: Start accepts. Automaton has 41105 states and 50653 transitions. Word has length 198 [2020-10-13 08:16:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:38,981 INFO L479 AbstractCegarLoop]: Abstraction has 41105 states and 50653 transitions. [2020-10-13 08:16:38,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:38,981 INFO L276 IsEmpty]: Start isEmpty. Operand 41105 states and 50653 transitions. [2020-10-13 08:16:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 08:16:38,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:38,995 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:16:38,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:16:38,996 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:38,996 INFO L82 PathProgramCache]: Analyzing trace with hash -480053768, now seen corresponding path program 1 times [2020-10-13 08:16:38,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:38,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72728588] [2020-10-13 08:16:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:39,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:39,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-13 08:16:39,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:39,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-13 08:16:39,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:16:39,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:16:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-13 08:16:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:39,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:39,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:39,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:16:39,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:39,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:16:39,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:39,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:40,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:40,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:16:40,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:40,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-13 08:16:40,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:40,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:16:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-13 08:16:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:16:42,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72728588] [2020-10-13 08:16:42,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:16:42,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:16:42,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420937588] [2020-10-13 08:16:42,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:16:42,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:42,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:16:42,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:16:42,011 INFO L87 Difference]: Start difference. First operand 41105 states and 50653 transitions. Second operand 7 states. [2020-10-13 08:17:00,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:00,050 INFO L93 Difference]: Finished difference Result 101168 states and 128203 transitions. [2020-10-13 08:17:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:17:00,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-13 08:17:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:00,232 INFO L225 Difference]: With dead ends: 101168 [2020-10-13 08:17:00,232 INFO L226 Difference]: Without dead ends: 57752 [2020-10-13 08:17:00,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:17:00,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57752 states. [2020-10-13 08:17:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57752 to 55357. [2020-10-13 08:17:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55357 states. [2020-10-13 08:17:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55357 states to 55357 states and 68167 transitions. [2020-10-13 08:17:01,424 INFO L78 Accepts]: Start accepts. Automaton has 55357 states and 68167 transitions. Word has length 280 [2020-10-13 08:17:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:01,425 INFO L479 AbstractCegarLoop]: Abstraction has 55357 states and 68167 transitions. [2020-10-13 08:17:01,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:17:01,425 INFO L276 IsEmpty]: Start isEmpty. Operand 55357 states and 68167 transitions. [2020-10-13 08:17:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-13 08:17:01,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:01,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:17:01,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:17:01,463 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:01,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1657114967, now seen corresponding path program 1 times [2020-10-13 08:17:01,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:01,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242930243] [2020-10-13 08:17:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:02,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:03,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:03,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-13 08:17:03,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:17:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2286 [2020-10-13 08:17:03,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:17:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:17:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:03,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:03,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:03,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:03,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:17:03,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:03,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:03,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:03,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:04,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:04,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:17:04,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:04,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:17:04,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:17:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:04,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 08:17:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:04,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:04,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:17:04,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 08:17:04,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:17:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-13 08:17:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:04,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:04,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:04,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:17:04,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:04,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 08:17:04,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:17:04,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:04,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 91 proven. 101 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 08:17:05,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242930243] [2020-10-13 08:17:05,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:05,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:17:05,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937600352] [2020-10-13 08:17:05,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:17:05,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:05,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:17:05,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:17:05,602 INFO L87 Difference]: Start difference. First operand 55357 states and 68167 transitions. Second operand 6 states. [2020-10-13 08:17:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:18,174 INFO L93 Difference]: Finished difference Result 110834 states and 136600 transitions. [2020-10-13 08:17:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:17:18,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 457 [2020-10-13 08:17:18,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:18,339 INFO L225 Difference]: With dead ends: 110834 [2020-10-13 08:17:18,339 INFO L226 Difference]: Without dead ends: 55378 [2020-10-13 08:17:18,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:17:18,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55378 states. [2020-10-13 08:17:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55378 to 55339. [2020-10-13 08:17:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55339 states. [2020-10-13 08:17:20,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55339 states to 55339 states and 66410 transitions. [2020-10-13 08:17:20,723 INFO L78 Accepts]: Start accepts. Automaton has 55339 states and 66410 transitions. Word has length 457 [2020-10-13 08:17:20,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:20,723 INFO L479 AbstractCegarLoop]: Abstraction has 55339 states and 66410 transitions. [2020-10-13 08:17:20,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:17:20,723 INFO L276 IsEmpty]: Start isEmpty. Operand 55339 states and 66410 transitions. [2020-10-13 08:17:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-13 08:17:20,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:20,758 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:20,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:17:20,759 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:20,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:20,759 INFO L82 PathProgramCache]: Analyzing trace with hash -711882242, now seen corresponding path program 1 times [2020-10-13 08:17:20,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:20,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619763162] [2020-10-13 08:17:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:24,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:25,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:25,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-13 08:17:25,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:17:25,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 08:17:25,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 08:17:25,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:17:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:26,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:26,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:26,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:26,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:17:26,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:26,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:26,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:17:26,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:26,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 08:17:26,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:26,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:26,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 08:17:26,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:17:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:26,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:26,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 08:17:26,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:26,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-13 08:17:26,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:26,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:26,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 08:17:26,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:26,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-13 08:17:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:26,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:26,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:26,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:17:26,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:26,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:17:26,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:17:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 124 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-13 08:17:27,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619763162] [2020-10-13 08:17:27,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:27,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:17:27,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325713460] [2020-10-13 08:17:27,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:17:27,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:27,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:17:27,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:17:27,197 INFO L87 Difference]: Start difference. First operand 55339 states and 66410 transitions. Second operand 7 states. [2020-10-13 08:17:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:46,808 INFO L93 Difference]: Finished difference Result 132008 states and 170267 transitions. [2020-10-13 08:17:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:17:46,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2020-10-13 08:17:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:47,160 INFO L225 Difference]: With dead ends: 132008 [2020-10-13 08:17:47,160 INFO L226 Difference]: Without dead ends: 76675 [2020-10-13 08:17:47,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:17:47,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76675 states. [2020-10-13 08:17:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76675 to 71439. [2020-10-13 08:17:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71439 states. [2020-10-13 08:17:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71439 states to 71439 states and 86131 transitions. [2020-10-13 08:17:51,208 INFO L78 Accepts]: Start accepts. Automaton has 71439 states and 86131 transitions. Word has length 536 [2020-10-13 08:17:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:51,209 INFO L479 AbstractCegarLoop]: Abstraction has 71439 states and 86131 transitions. [2020-10-13 08:17:51,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:17:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 71439 states and 86131 transitions. [2020-10-13 08:17:51,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-10-13 08:17:51,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:51,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:51,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:17:51,241 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:51,242 INFO L82 PathProgramCache]: Analyzing trace with hash 545857170, now seen corresponding path program 1 times [2020-10-13 08:17:51,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:51,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322255041] [2020-10-13 08:17:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:56,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:56,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 556 [2020-10-13 08:17:56,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:17:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 08:17:56,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 08:17:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 08:17:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:56,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:56,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:56,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:56,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:17:56,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:56,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:56,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:56,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:56,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:56,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:17:56,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:17:56,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 08:17:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:56,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:17:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:56,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:56,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:17:56,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:17:56,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:56,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 08:17:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:56,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-13 08:17:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:57,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:57,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:17:57,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:57,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:17:57,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:57,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:17:57,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:57,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 130 proven. 113 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-13 08:17:57,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322255041] [2020-10-13 08:17:57,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:57,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:17:57,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456220177] [2020-10-13 08:17:57,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:17:57,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:57,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:17:57,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:17:57,231 INFO L87 Difference]: Start difference. First operand 71439 states and 86131 transitions. Second operand 7 states. [2020-10-13 08:18:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:19,596 INFO L93 Difference]: Finished difference Result 173953 states and 214435 transitions. [2020-10-13 08:18:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:18:19,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 542 [2020-10-13 08:18:19,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:19,996 INFO L225 Difference]: With dead ends: 173953 [2020-10-13 08:18:19,996 INFO L226 Difference]: Without dead ends: 103287 [2020-10-13 08:18:20,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:18:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103287 states. [2020-10-13 08:18:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103287 to 102387. [2020-10-13 08:18:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102387 states. [2020-10-13 08:18:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102387 states to 102387 states and 124146 transitions. [2020-10-13 08:18:21,550 INFO L78 Accepts]: Start accepts. Automaton has 102387 states and 124146 transitions. Word has length 542 [2020-10-13 08:18:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:21,551 INFO L479 AbstractCegarLoop]: Abstraction has 102387 states and 124146 transitions. [2020-10-13 08:18:21,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:18:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 102387 states and 124146 transitions. [2020-10-13 08:18:21,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2020-10-13 08:18:21,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:21,580 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:21,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:18:21,581 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:21,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:21,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1349304615, now seen corresponding path program 1 times [2020-10-13 08:18:21,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:21,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905407278] [2020-10-13 08:18:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:21,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:26,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:26,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 619 [2020-10-13 08:18:26,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4869 [2020-10-13 08:18:26,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:18:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:18:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:18:26,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:26,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:26,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:26,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:26,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:18:26,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:18:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:26,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:26,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:18:26,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:26,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 08:18:26,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:18:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 08:18:26,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:18:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:27,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:27,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:18:27,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:18:27,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-13 08:18:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:27,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:27,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-13 08:18:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:27,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:27,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:27,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:18:27,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:18:27,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 266 [2020-10-13 08:18:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 15 proven. 286 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-13 08:18:27,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905407278] [2020-10-13 08:18:27,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:27,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:18:27,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595356374] [2020-10-13 08:18:27,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:18:27,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:27,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:18:27,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:18:27,580 INFO L87 Difference]: Start difference. First operand 102387 states and 124146 transitions. Second operand 7 states.