/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:01:44,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:01:44,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:01:44,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:01:44,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:01:44,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:01:44,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:01:44,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:01:44,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:01:44,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:01:44,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:01:44,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:01:44,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:01:44,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:01:44,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:01:44,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:01:44,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:01:44,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:01:44,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:01:44,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:01:44,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:01:44,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:01:44,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:01:44,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:01:44,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:01:44,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:01:44,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:01:44,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:01:44,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:01:44,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:01:44,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:01:44,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:01:44,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:01:44,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:01:44,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:01:44,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:01:44,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:01:44,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:01:44,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:01:44,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:01:44,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:01:44,120 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 [2020-10-14 04:01:44,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:01:44,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:01:44,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:01:44,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:01:44,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:01:44,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:01:44,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:01:44,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:01:44,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:01:44,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:01:44,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:01:44,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:01:44,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:01:44,181 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:01:44,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:01:44,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:01:44,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:01:44,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:01:44,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:01:44,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:01:44,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:01:44,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:01:44,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:01:44,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:01:44,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:01:44,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:01:44,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:01:44,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:01:44,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:01:44,185 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:01:44,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:01:44,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:01:44,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:01:44,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:01:44,585 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:01:44,587 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2020-10-14 04:01:44,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec33d2127/7209e060bad34022bf8c6af471083158/FLAGaa2b6c85a [2020-10-14 04:01:45,611 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:01:45,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label29.c [2020-10-14 04:01:45,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec33d2127/7209e060bad34022bf8c6af471083158/FLAGaa2b6c85a [2020-10-14 04:01:46,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec33d2127/7209e060bad34022bf8c6af471083158 [2020-10-14 04:01:46,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:01:46,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:01:46,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:01:46,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:01:46,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:01:46,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:01:46" (1/1) ... [2020-10-14 04:01:46,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260ceee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:46, skipping insertion in model container [2020-10-14 04:01:46,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:01:46" (1/1) ... [2020-10-14 04:01:46,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:01:46,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:01:47,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:01:47,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:01:48,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:01:48,088 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:01:48,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48 WrapperNode [2020-10-14 04:01:48,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:01:48,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:01:48,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:01:48,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:01:48,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48" (1/1) ... [2020-10-14 04:01:48,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48" (1/1) ... [2020-10-14 04:01:48,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48" (1/1) ... [2020-10-14 04:01:48,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48" (1/1) ... [2020-10-14 04:01:48,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48" (1/1) ... [2020-10-14 04:01:48,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48" (1/1) ... [2020-10-14 04:01:48,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48" (1/1) ... [2020-10-14 04:01:48,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:01:48,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:01:48,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:01:48,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:01:48,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:01:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:01:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:01:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:01:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:01:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:01:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:01:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:01:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:01:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:01:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:01:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:01:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:01:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:01:55,459 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:01:55,460 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:01:55,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:01:55 BoogieIcfgContainer [2020-10-14 04:01:55,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:01:55,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:01:55,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:01:55,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:01:55,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:01:46" (1/3) ... [2020-10-14 04:01:55,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789b8d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:01:55, skipping insertion in model container [2020-10-14 04:01:55,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:48" (2/3) ... [2020-10-14 04:01:55,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789b8d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:01:55, skipping insertion in model container [2020-10-14 04:01:55,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:01:55" (3/3) ... [2020-10-14 04:01:55,480 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label29.c [2020-10-14 04:01:55,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:01:55,501 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:01:55,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:01:55,550 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:01:55,550 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:01:55,550 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:01:55,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:01:55,551 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:01:55,551 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:01:55,551 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:01:55,551 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:01:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:01:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 04:01:55,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:01:55,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:01:55,598 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:01:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:01:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash 216258473, now seen corresponding path program 1 times [2020-10-14 04:01:55,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:01:55,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945496485] [2020-10-14 04:01:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:01:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:56,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:56,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:56,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 04:01:56,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:56,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-14 04:01:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:56,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:01:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:01:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:01:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:01:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:01:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:01:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:01:56,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:01:56,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:01:56,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:01:56,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:01:56,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:01:56,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:01:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:01:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:01:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:01:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:01:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:01:56,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945496485] [2020-10-14 04:01:56,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:01:56,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:01:56,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742975936] [2020-10-14 04:01:56,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:01:56,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:01:56,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:01:56,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:01:56,633 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:02:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:09,902 INFO L93 Difference]: Finished difference Result 1716 states and 3126 transitions. [2020-10-14 04:02:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:09,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 04:02:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:09,968 INFO L225 Difference]: With dead ends: 1716 [2020-10-14 04:02:09,968 INFO L226 Difference]: Without dead ends: 1034 [2020-10-14 04:02:09,989 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 [2020-10-14 04:02:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-10-14 04:02:10,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1008. [2020-10-14 04:02:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-14 04:02:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1705 transitions. [2020-10-14 04:02:10,168 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1705 transitions. Word has length 71 [2020-10-14 04:02:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:10,170 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1705 transitions. [2020-10-14 04:02:10,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:02:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1705 transitions. [2020-10-14 04:02:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 04:02:10,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:10,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:02:10,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:02:10,194 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:10,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2068363867, now seen corresponding path program 1 times [2020-10-14 04:02:10,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:10,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49306194] [2020-10-14 04:02:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:11,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:11,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 04:02:11,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:02:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1470 [2020-10-14 04:02:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:11,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:02:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:02:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:02:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:11,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:11,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:11,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:02:11,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:11,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:11,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:11,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:11,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:02:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:02:12,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:12,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:12,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:02:12,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:12,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49306194] [2020-10-14 04:02:12,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:12,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:02:12,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476671171] [2020-10-14 04:02:12,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:12,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:12,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:12,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:12,125 INFO L87 Difference]: Start difference. First operand 1008 states and 1705 transitions. Second operand 5 states. [2020-10-14 04:02:30,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:30,908 INFO L93 Difference]: Finished difference Result 2916 states and 4999 transitions. [2020-10-14 04:02:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:30,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-14 04:02:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:30,928 INFO L225 Difference]: With dead ends: 2916 [2020-10-14 04:02:30,929 INFO L226 Difference]: Without dead ends: 1914 [2020-10-14 04:02:30,933 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 [2020-10-14 04:02:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-14 04:02:31,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1899. [2020-10-14 04:02:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-14 04:02:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2834 transitions. [2020-10-14 04:02:31,016 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2834 transitions. Word has length 140 [2020-10-14 04:02:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:31,020 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2834 transitions. [2020-10-14 04:02:31,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:02:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2834 transitions. [2020-10-14 04:02:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 04:02:31,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:31,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:02:31,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:02:31,030 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:31,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:31,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1582760359, now seen corresponding path program 1 times [2020-10-14 04:02:31,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:31,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618463646] [2020-10-14 04:02:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:31,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:31,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:33,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:33,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 04:02:33,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:02:33,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2357 [2020-10-14 04:02:33,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:33,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:33,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:33,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:02:33,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:02:33,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:33,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:33,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:02:33,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:33,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:33,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:33,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:33,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:33,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:02:33,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:33,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 04:02:33,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:33,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:33,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:02:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:33,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618463646] [2020-10-14 04:02:33,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:33,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:02:33,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219583174] [2020-10-14 04:02:33,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:33,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:33,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:33,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:33,899 INFO L87 Difference]: Start difference. First operand 1899 states and 2834 transitions. Second operand 5 states. [2020-10-14 04:02:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:50,588 INFO L93 Difference]: Finished difference Result 4721 states and 7323 transitions. [2020-10-14 04:02:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:50,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-14 04:02:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:50,614 INFO L225 Difference]: With dead ends: 4721 [2020-10-14 04:02:50,614 INFO L226 Difference]: Without dead ends: 2828 [2020-10-14 04:02:50,622 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 [2020-10-14 04:02:50,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2020-10-14 04:02:50,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2810. [2020-10-14 04:02:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2810 states. [2020-10-14 04:02:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 4309 transitions. [2020-10-14 04:02:50,746 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 4309 transitions. Word has length 146 [2020-10-14 04:02:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:50,747 INFO L479 AbstractCegarLoop]: Abstraction has 2810 states and 4309 transitions. [2020-10-14 04:02:50,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:02:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 4309 transitions. [2020-10-14 04:02:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 04:02:50,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:50,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:02:50,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:02:50,752 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:50,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:50,753 INFO L82 PathProgramCache]: Analyzing trace with hash 400970031, now seen corresponding path program 1 times [2020-10-14 04:02:50,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:50,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404029653] [2020-10-14 04:02:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:52,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:52,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 04:02:52,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:02:52,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1879 [2020-10-14 04:02:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:52,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:02:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:02:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:52,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:52,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:52,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:52,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:02:52,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:52,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:52,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:52,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:52,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:02:52,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:52,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 04:02:52,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:52,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:52,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:02:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:52,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404029653] [2020-10-14 04:02:52,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:52,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:02:52,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438176365] [2020-10-14 04:02:52,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:52,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:52,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:52,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:52,998 INFO L87 Difference]: Start difference. First operand 2810 states and 4309 transitions. Second operand 5 states. [2020-10-14 04:03:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:12,212 INFO L93 Difference]: Finished difference Result 6533 states and 10292 transitions. [2020-10-14 04:03:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:12,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-14 04:03:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:12,244 INFO L225 Difference]: With dead ends: 6533 [2020-10-14 04:03:12,244 INFO L226 Difference]: Without dead ends: 3729 [2020-10-14 04:03:12,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:03:12,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2020-10-14 04:03:12,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 2808. [2020-10-14 04:03:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2808 states. [2020-10-14 04:03:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4308 transitions. [2020-10-14 04:03:12,350 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4308 transitions. Word has length 150 [2020-10-14 04:03:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:12,351 INFO L479 AbstractCegarLoop]: Abstraction has 2808 states and 4308 transitions. [2020-10-14 04:03:12,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4308 transitions. [2020-10-14 04:03:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 04:03:12,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:12,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:03:12,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:03:12,355 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:12,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2145590465, now seen corresponding path program 1 times [2020-10-14 04:03:12,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:12,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832852592] [2020-10-14 04:03:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:13,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:13,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 04:03:13,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:03:13,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1493 [2020-10-14 04:03:13,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:13,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 04:03:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:03:13,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:13,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:13,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:13,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:13,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:03:13,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:13,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:13,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:13,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:14,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:14,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:14,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 04:03:14,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:14,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 04:03:14,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:14,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 04:03:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:03:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:14,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832852592] [2020-10-14 04:03:14,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:03:14,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:03:14,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863516059] [2020-10-14 04:03:14,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:14,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:14,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:14,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:14,220 INFO L87 Difference]: Start difference. First operand 2808 states and 4308 transitions. Second operand 5 states. [2020-10-14 04:03:33,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:33,027 INFO L93 Difference]: Finished difference Result 8262 states and 12933 transitions. [2020-10-14 04:03:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:33,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 04:03:33,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:33,082 INFO L225 Difference]: With dead ends: 8262 [2020-10-14 04:03:33,083 INFO L226 Difference]: Without dead ends: 5460 [2020-10-14 04:03:33,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:03:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2020-10-14 04:03:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5451. [2020-10-14 04:03:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5451 states. [2020-10-14 04:03:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5451 states to 5451 states and 7761 transitions. [2020-10-14 04:03:33,269 INFO L78 Accepts]: Start accepts. Automaton has 5451 states and 7761 transitions. Word has length 153 [2020-10-14 04:03:33,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:33,270 INFO L479 AbstractCegarLoop]: Abstraction has 5451 states and 7761 transitions. [2020-10-14 04:03:33,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5451 states and 7761 transitions. [2020-10-14 04:03:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 04:03:33,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:33,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:03:33,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:03:33,276 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:33,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:33,276 INFO L82 PathProgramCache]: Analyzing trace with hash -240919041, now seen corresponding path program 1 times [2020-10-14 04:03:33,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:33,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025850498] [2020-10-14 04:03:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:33,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:34,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:34,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 04:03:34,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:03:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1384 [2020-10-14 04:03:34,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:34,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:34,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:34,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 04:03:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:03:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:34,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:34,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:34,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:34,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:03:34,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:34,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:35,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 04:03:35,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 04:03:35,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:35,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:03:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:35,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025850498] [2020-10-14 04:03:35,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:35,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:35,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308791658] [2020-10-14 04:03:35,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:35,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:35,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:35,089 INFO L87 Difference]: Start difference. First operand 5451 states and 7761 transitions. Second operand 5 states. [2020-10-14 04:04:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:01,065 INFO L93 Difference]: Finished difference Result 13533 states and 19909 transitions. [2020-10-14 04:04:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:01,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 04:04:01,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:01,120 INFO L225 Difference]: With dead ends: 13533 [2020-10-14 04:04:01,120 INFO L226 Difference]: Without dead ends: 8088 [2020-10-14 04:04:01,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:04:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8088 states. [2020-10-14 04:04:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8088 to 7209. [2020-10-14 04:04:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7209 states. [2020-10-14 04:04:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7209 states to 7209 states and 10592 transitions. [2020-10-14 04:04:01,459 INFO L78 Accepts]: Start accepts. Automaton has 7209 states and 10592 transitions. Word has length 153 [2020-10-14 04:04:01,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:01,460 INFO L479 AbstractCegarLoop]: Abstraction has 7209 states and 10592 transitions. [2020-10-14 04:04:01,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 7209 states and 10592 transitions. [2020-10-14 04:04:01,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 04:04:01,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:01,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:04:01,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:04:01,467 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:01,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2032709680, now seen corresponding path program 1 times [2020-10-14 04:04:01,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:01,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566897374] [2020-10-14 04:04:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:01,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:06,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:06,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 04:04:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:04:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 04:04:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:06,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 04:04:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:04:06,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:06,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:04:06,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:06,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:06,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:06,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:06,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:04:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:06,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:06,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:06,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:04:06,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:06,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 04:04:06,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:06,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:04:06,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:07,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566897374] [2020-10-14 04:04:07,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:07,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:07,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468470206] [2020-10-14 04:04:07,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:07,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:07,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:07,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:07,017 INFO L87 Difference]: Start difference. First operand 7209 states and 10592 transitions. Second operand 5 states. [2020-10-14 04:04:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:26,690 INFO L93 Difference]: Finished difference Result 15728 states and 23575 transitions. [2020-10-14 04:04:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:26,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-14 04:04:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:26,722 INFO L225 Difference]: With dead ends: 15728 [2020-10-14 04:04:26,722 INFO L226 Difference]: Without dead ends: 8525 [2020-10-14 04:04:26,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:04:26,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8525 states. [2020-10-14 04:04:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8525 to 7212. [2020-10-14 04:04:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7212 states. [2020-10-14 04:04:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7212 states to 7212 states and 10606 transitions. [2020-10-14 04:04:26,926 INFO L78 Accepts]: Start accepts. Automaton has 7212 states and 10606 transitions. Word has length 157 [2020-10-14 04:04:26,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:26,927 INFO L479 AbstractCegarLoop]: Abstraction has 7212 states and 10606 transitions. [2020-10-14 04:04:26,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand 7212 states and 10606 transitions. [2020-10-14 04:04:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 04:04:26,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:26,933 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:04:26,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:04:26,934 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1210408980, now seen corresponding path program 1 times [2020-10-14 04:04:26,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:26,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909437328] [2020-10-14 04:04:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:27,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:27,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:27,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:28,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:28,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 04:04:28,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:04:28,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-10-14 04:04:28,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:28,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:04:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:04:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:04:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:28,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:28,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:28,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:28,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:04:28,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:28,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:28,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:28,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:04:28,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:28,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:28,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:04:28,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 04:04:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:28,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:04:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:28,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909437328] [2020-10-14 04:04:28,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:28,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:28,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155477271] [2020-10-14 04:04:28,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:28,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:28,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:28,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:28,827 INFO L87 Difference]: Start difference. First operand 7212 states and 10606 transitions. Second operand 5 states. [2020-10-14 04:04:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:44,790 INFO L93 Difference]: Finished difference Result 17976 states and 27079 transitions. [2020-10-14 04:04:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:44,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-14 04:04:44,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:44,837 INFO L225 Difference]: With dead ends: 17976 [2020-10-14 04:04:44,837 INFO L226 Difference]: Without dead ends: 10770 [2020-10-14 04:04:44,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:04:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10770 states. [2020-10-14 04:04:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10770 to 10733. [2020-10-14 04:04:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10733 states. [2020-10-14 04:04:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 15875 transitions. [2020-10-14 04:04:45,091 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 15875 transitions. Word has length 159 [2020-10-14 04:04:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:45,091 INFO L479 AbstractCegarLoop]: Abstraction has 10733 states and 15875 transitions. [2020-10-14 04:04:45,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 15875 transitions. [2020-10-14 04:04:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 04:04:45,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:45,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:04:45,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:04:45,097 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:45,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:45,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1188952100, now seen corresponding path program 1 times [2020-10-14 04:04:45,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:45,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911784861] [2020-10-14 04:04:45,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:45,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:46,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:46,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 04:04:46,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:04:46,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1642 [2020-10-14 04:04:46,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:46,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:46,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:46,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 04:04:46,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:04:46,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:04:46,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:46,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:46,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:46,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:46,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:46,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:04:46,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:46,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:46,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:46,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:46,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:47,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 04:04:47,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:47,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:04:47,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:47,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 04:04:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:47,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911784861] [2020-10-14 04:04:47,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:47,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:47,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724002698] [2020-10-14 04:04:47,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:47,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:47,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:47,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:47,061 INFO L87 Difference]: Start difference. First operand 10733 states and 15875 transitions. Second operand 5 states. [2020-10-14 04:05:03,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:03,583 INFO L93 Difference]: Finished difference Result 30664 states and 46826 transitions. [2020-10-14 04:05:03,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:05:03,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-14 04:05:03,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:03,687 INFO L225 Difference]: With dead ends: 30664 [2020-10-14 04:05:03,687 INFO L226 Difference]: Without dead ends: 19937 [2020-10-14 04:05:03,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:05:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19937 states. [2020-10-14 04:05:04,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19937 to 17324. [2020-10-14 04:05:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17324 states. [2020-10-14 04:05:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17324 states to 17324 states and 23972 transitions. [2020-10-14 04:05:04,204 INFO L78 Accepts]: Start accepts. Automaton has 17324 states and 23972 transitions. Word has length 163 [2020-10-14 04:05:04,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:04,204 INFO L479 AbstractCegarLoop]: Abstraction has 17324 states and 23972 transitions. [2020-10-14 04:05:04,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:05:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 17324 states and 23972 transitions. [2020-10-14 04:05:04,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 04:05:04,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:04,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:05:04,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:05:04,224 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:04,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:04,224 INFO L82 PathProgramCache]: Analyzing trace with hash -62338893, now seen corresponding path program 1 times [2020-10-14 04:05:04,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:04,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245453228] [2020-10-14 04:05:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:05,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:05,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 04:05:05,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:05:05,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-14 04:05:05,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:05,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 04:05:05,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:05:05,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:05:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:05,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:05,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:05,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:05,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:05,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:05:05,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:05,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:05:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:05,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:05,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:05:05,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 04:05:05,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:05,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:05:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:05:05,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245453228] [2020-10-14 04:05:05,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:05,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:05:05,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890817339] [2020-10-14 04:05:05,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:05:05,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:05,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:05:05,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:05:05,447 INFO L87 Difference]: Start difference. First operand 17324 states and 23972 transitions. Second operand 5 states. [2020-10-14 04:05:29,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:29,507 INFO L93 Difference]: Finished difference Result 40350 states and 57660 transitions. [2020-10-14 04:05:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:05:29,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-14 04:05:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:29,605 INFO L225 Difference]: With dead ends: 40350 [2020-10-14 04:05:29,605 INFO L226 Difference]: Without dead ends: 23032 [2020-10-14 04:05:29,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:05:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23032 states. [2020-10-14 04:05:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23032 to 22585. [2020-10-14 04:05:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22585 states. [2020-10-14 04:05:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22585 states to 22585 states and 30431 transitions. [2020-10-14 04:05:30,175 INFO L78 Accepts]: Start accepts. Automaton has 22585 states and 30431 transitions. Word has length 168 [2020-10-14 04:05:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:30,176 INFO L479 AbstractCegarLoop]: Abstraction has 22585 states and 30431 transitions. [2020-10-14 04:05:30,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:05:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 22585 states and 30431 transitions. [2020-10-14 04:05:30,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 04:05:30,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:30,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:05:30,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:05:30,191 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:30,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:30,192 INFO L82 PathProgramCache]: Analyzing trace with hash 751016537, now seen corresponding path program 1 times [2020-10-14 04:05:30,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:30,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034155889] [2020-10-14 04:05:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:30,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:31,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:31,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 04:05:31,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:05:31,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-14 04:05:31,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:31,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 04:05:31,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:05:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:05:32,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:32,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:32,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:32,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:32,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:05:32,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:32,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:32,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:32,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:32,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:32,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:32,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 04:05:32,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 04:05:32,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:32,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 04:05:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:05:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:05:32,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034155889] [2020-10-14 04:05:32,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:05:32,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:05:32,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183187865] [2020-10-14 04:05:32,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:05:32,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:32,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:05:32,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:05:32,637 INFO L87 Difference]: Start difference. First operand 22585 states and 30431 transitions. Second operand 5 states.