/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:29:19,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:29:19,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:29:19,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:29:19,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:29:19,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:29:19,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:29:19,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:29:19,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:29:19,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:29:19,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:29:19,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:29:19,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:29:19,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:29:19,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:29:19,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:29:19,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:29:19,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:29:19,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:29:19,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:29:19,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:29:19,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:29:19,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:29:19,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:29:19,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:29:19,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:29:19,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:29:19,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:29:19,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:29:19,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:29:19,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:29:19,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:29:19,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:29:19,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:29:19,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:29:19,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:29:19,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:29:19,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:29:19,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:29:19,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:29:19,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:29:19,235 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 [2020-10-12 13:29:19,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:29:19,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:29:19,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:29:19,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:29:19,278 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:29:19,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:29:19,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:29:19,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:29:19,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:29:19,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:29:19,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:29:19,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:29:19,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:29:19,281 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:29:19,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:29:19,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:29:19,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:29:19,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:29:19,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:29:19,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:29:19,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:29:19,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:29:19,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:29:19,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:29:19,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:29:19,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:29:19,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:29:19,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:29:19,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:29:19,285 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:29:19,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:29:19,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:29:19,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:29:19,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:29:19,618 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:29:19,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-12 13:29:19,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c666b207/5ab3a36212564897ac752ea9a72537ad/FLAG68df169cd [2020-10-12 13:29:20,514 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:29:20,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-12 13:29:20,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c666b207/5ab3a36212564897ac752ea9a72537ad/FLAG68df169cd [2020-10-12 13:29:20,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c666b207/5ab3a36212564897ac752ea9a72537ad [2020-10-12 13:29:20,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:29:20,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:29:20,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:29:20,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:29:20,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:29:20,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:29:20" (1/1) ... [2020-10-12 13:29:20,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5bdfd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:20, skipping insertion in model container [2020-10-12 13:29:20,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:29:20" (1/1) ... [2020-10-12 13:29:21,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:29:21,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:29:22,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:29:22,755 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:29:23,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:29:23,496 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:29:23,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23 WrapperNode [2020-10-12 13:29:23,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:29:23,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:29:23,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:29:23,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:29:23,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23" (1/1) ... [2020-10-12 13:29:23,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23" (1/1) ... [2020-10-12 13:29:23,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23" (1/1) ... [2020-10-12 13:29:23,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23" (1/1) ... [2020-10-12 13:29:23,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23" (1/1) ... [2020-10-12 13:29:23,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23" (1/1) ... [2020-10-12 13:29:23,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23" (1/1) ... [2020-10-12 13:29:23,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:29:23,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:29:23,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:29:23,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:29:23,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23" (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 [2020-10-12 13:29:24,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:29:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:29:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:29:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:29:24,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:29:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:29:24,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:29:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:29:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:29:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:29:24,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:29:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:29:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:29:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:29:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:29:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:29:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:29:29,140 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:29:29,141 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:29:29,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:29:29 BoogieIcfgContainer [2020-10-12 13:29:29,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:29:29,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:29:29,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:29:29,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:29:29,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:29:20" (1/3) ... [2020-10-12 13:29:29,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a03d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:29:29, skipping insertion in model container [2020-10-12 13:29:29,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:29:23" (2/3) ... [2020-10-12 13:29:29,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a03d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:29:29, skipping insertion in model container [2020-10-12 13:29:29,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:29:29" (3/3) ... [2020-10-12 13:29:29,163 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2020-10-12 13:29:29,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:29:29,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:29:29,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:29:29,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:29:29,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:29:29,227 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:29:29,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:29:29,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:29:29,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:29:29,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:29:29,228 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:29:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:29:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 13:29:29,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:29,300 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] [2020-10-12 13:29:29,301 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash 415024674, now seen corresponding path program 1 times [2020-10-12 13:29:29,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:29,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18753443] [2020-10-12 13:29:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:29:29,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-12 13:29:29,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:29:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:29:30,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:30,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:30,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:30,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:30,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:29:30,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:30,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:30,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:29:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:29:30,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18753443] [2020-10-12 13:29:30,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:29:30,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:29:30,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925416703] [2020-10-12 13:29:30,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:29:30,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:30,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:29:30,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:29:30,175 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:29:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:38,441 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:29:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:29:38,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-12 13:29:38,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:38,473 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:29:38,474 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:29:38,484 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 [2020-10-12 13:29:38,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:29:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:29:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:29:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-12 13:29:38,668 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 67 [2020-10-12 13:29:38,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:38,669 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-12 13:29:38,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:29:38,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-12 13:29:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 13:29:38,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:38,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:38,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:29:38,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:38,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:38,681 INFO L82 PathProgramCache]: Analyzing trace with hash 795068955, now seen corresponding path program 1 times [2020-10-12 13:29:38,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:38,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601067131] [2020-10-12 13:29:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:39,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:39,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 13:29:39,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:29:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-12 13:29:39,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:29:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-12 13:29:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:40,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:40,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:40,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:40,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:40,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:29:40,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:40,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:40,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:40,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:29:40,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 13:29:40,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:29:40,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:29:40,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601067131] [2020-10-12 13:29:40,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:40,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:29:40,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987486282] [2020-10-12 13:29:40,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:29:40,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:40,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:29:40,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:29:40,340 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-12 13:29:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:49,611 INFO L93 Difference]: Finished difference Result 4720 states and 7724 transitions. [2020-10-12 13:29:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:29:49,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-12 13:29:49,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:49,634 INFO L225 Difference]: With dead ends: 4720 [2020-10-12 13:29:49,634 INFO L226 Difference]: Without dead ends: 3173 [2020-10-12 13:29:49,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:29:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-10-12 13:29:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3147. [2020-10-12 13:29:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3147 states. [2020-10-12 13:29:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4486 transitions. [2020-10-12 13:29:49,777 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4486 transitions. Word has length 142 [2020-10-12 13:29:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:49,780 INFO L479 AbstractCegarLoop]: Abstraction has 3147 states and 4486 transitions. [2020-10-12 13:29:49,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:29:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4486 transitions. [2020-10-12 13:29:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 13:29:49,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:49,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:49,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:29:49,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1934670051, now seen corresponding path program 1 times [2020-10-12 13:29:49,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:49,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144301843] [2020-10-12 13:29:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:49,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:50,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:50,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 13:29:50,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-12 13:29:50,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:29:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:50,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:50,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:50,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:29:50,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:29:50,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:51,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:51,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:29:51,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:51,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 13:29:51,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:29:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:29:51,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144301843] [2020-10-12 13:29:51,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:29:51,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:29:51,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565742342] [2020-10-12 13:29:51,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:51,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:51,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:51,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:51,093 INFO L87 Difference]: Start difference. First operand 3147 states and 4486 transitions. Second operand 7 states. [2020-10-12 13:30:03,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:03,249 INFO L93 Difference]: Finished difference Result 9616 states and 13884 transitions. [2020-10-12 13:30:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:30:03,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-12 13:30:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:03,287 INFO L225 Difference]: With dead ends: 9616 [2020-10-12 13:30:03,287 INFO L226 Difference]: Without dead ends: 6475 [2020-10-12 13:30:03,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:30:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2020-10-12 13:30:03,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 6369. [2020-10-12 13:30:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6369 states. [2020-10-12 13:30:03,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6369 states to 6369 states and 8570 transitions. [2020-10-12 13:30:03,525 INFO L78 Accepts]: Start accepts. Automaton has 6369 states and 8570 transitions. Word has length 146 [2020-10-12 13:30:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:03,528 INFO L479 AbstractCegarLoop]: Abstraction has 6369 states and 8570 transitions. [2020-10-12 13:30:03,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:30:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 6369 states and 8570 transitions. [2020-10-12 13:30:03,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-12 13:30:03,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:03,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:30:03,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:30:03,534 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:03,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1588479353, now seen corresponding path program 1 times [2020-10-12 13:30:03,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:03,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183421900] [2020-10-12 13:30:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:03,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:04,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:04,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-12 13:30:04,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:04,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1279 [2020-10-12 13:30:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:30:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:30:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 13:30:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:04,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:04,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:04,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:04,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:04,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:30:04,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:30:04,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:05,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:05,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:05,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:30:05,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-12 13:30:05,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:30:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:30:05,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183421900] [2020-10-12 13:30:05,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:30:05,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:30:05,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838366393] [2020-10-12 13:30:05,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:05,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:05,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:05,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:05,337 INFO L87 Difference]: Start difference. First operand 6369 states and 8570 transitions. Second operand 7 states. [2020-10-12 13:30:17,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:17,445 INFO L93 Difference]: Finished difference Result 19415 states and 27241 transitions. [2020-10-12 13:30:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:30:17,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-12 13:30:17,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:17,519 INFO L225 Difference]: With dead ends: 19415 [2020-10-12 13:30:17,519 INFO L226 Difference]: Without dead ends: 13052 [2020-10-12 13:30:17,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:30:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13052 states. [2020-10-12 13:30:17,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13052 to 12886. [2020-10-12 13:30:17,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12886 states. [2020-10-12 13:30:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12886 states to 12886 states and 17644 transitions. [2020-10-12 13:30:17,878 INFO L78 Accepts]: Start accepts. Automaton has 12886 states and 17644 transitions. Word has length 180 [2020-10-12 13:30:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:17,878 INFO L479 AbstractCegarLoop]: Abstraction has 12886 states and 17644 transitions. [2020-10-12 13:30:17,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:30:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 12886 states and 17644 transitions. [2020-10-12 13:30:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-12 13:30:17,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:17,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:30:17,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:30:17,884 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:17,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1737403654, now seen corresponding path program 1 times [2020-10-12 13:30:17,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:17,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063040462] [2020-10-12 13:30:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:19,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:19,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-12 13:30:19,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1802 [2020-10-12 13:30:19,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:30:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:30:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:30:19,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:19,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:19,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:19,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:19,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:30:19,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:19,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:30:19,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:19,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:20,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:20,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:30:20,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 13:30:20,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:30:20,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:30:20,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063040462] [2020-10-12 13:30:20,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:30:20,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:30:20,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913940189] [2020-10-12 13:30:20,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:20,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:20,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:20,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:20,554 INFO L87 Difference]: Start difference. First operand 12886 states and 17644 transitions. Second operand 7 states. [2020-10-12 13:30:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:32,180 INFO L93 Difference]: Finished difference Result 27200 states and 38839 transitions. [2020-10-12 13:30:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:30:32,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-12 13:30:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:32,269 INFO L225 Difference]: With dead ends: 27200 [2020-10-12 13:30:32,269 INFO L226 Difference]: Without dead ends: 14320 [2020-10-12 13:30:32,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:30:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14320 states. [2020-10-12 13:30:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14320 to 13850. [2020-10-12 13:30:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13850 states. [2020-10-12 13:30:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13850 states to 13850 states and 18791 transitions. [2020-10-12 13:30:32,823 INFO L78 Accepts]: Start accepts. Automaton has 13850 states and 18791 transitions. Word has length 215 [2020-10-12 13:30:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:32,824 INFO L479 AbstractCegarLoop]: Abstraction has 13850 states and 18791 transitions. [2020-10-12 13:30:32,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:30:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 13850 states and 18791 transitions. [2020-10-12 13:30:32,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-12 13:30:32,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:32,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:30:32,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:30:32,834 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:32,835 INFO L82 PathProgramCache]: Analyzing trace with hash -459082834, now seen corresponding path program 1 times [2020-10-12 13:30:32,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:32,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647234719] [2020-10-12 13:30:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:33,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:34,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:34,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-12 13:30:34,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:30:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-10-12 13:30:34,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:30:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:30:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:34,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:34,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:34,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:30:34,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:30:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:30:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:34,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:34,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:34,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:30:34,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 13:30:34,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:30:34,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:30:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:34,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:34,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:30:34,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-12 13:30:34,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:30:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:30:35,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647234719] [2020-10-12 13:30:35,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:30:35,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:30:35,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898892340] [2020-10-12 13:30:35,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:35,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:35,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:35,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:35,107 INFO L87 Difference]: Start difference. First operand 13850 states and 18791 transitions. Second operand 7 states. [2020-10-12 13:30:51,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:51,062 INFO L93 Difference]: Finished difference Result 37984 states and 57554 transitions. [2020-10-12 13:30:51,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:30:51,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-12 13:30:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:51,164 INFO L225 Difference]: With dead ends: 37984 [2020-10-12 13:30:51,164 INFO L226 Difference]: Without dead ends: 20906 [2020-10-12 13:30:51,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:30:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20906 states. [2020-10-12 13:30:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20906 to 18837. [2020-10-12 13:30:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18837 states. [2020-10-12 13:30:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18837 states to 18837 states and 24392 transitions. [2020-10-12 13:30:51,736 INFO L78 Accepts]: Start accepts. Automaton has 18837 states and 24392 transitions. Word has length 255 [2020-10-12 13:30:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:51,736 INFO L479 AbstractCegarLoop]: Abstraction has 18837 states and 24392 transitions. [2020-10-12 13:30:51,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:30:51,737 INFO L276 IsEmpty]: Start isEmpty. Operand 18837 states and 24392 transitions. [2020-10-12 13:30:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-12 13:30:51,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:51,742 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:30:51,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:30:51,743 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:51,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:51,743 INFO L82 PathProgramCache]: Analyzing trace with hash 871031551, now seen corresponding path program 1 times [2020-10-12 13:30:51,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:51,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786130927] [2020-10-12 13:30:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:52,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:54,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:54,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:54,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-12 13:30:54,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:30:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2921 [2020-10-12 13:30:54,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:30:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:30:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-10-12 13:30:54,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:54,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:54,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:54,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:54,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:54,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:54,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:30:54,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:30:54,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:54,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:54,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:54,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:55,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:55,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:30:55,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:55,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-12 13:30:55,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:55,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-12 13:30:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:30:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:55,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:55,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:55,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:30:55,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 13:30:55,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:30:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 13:30:55,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786130927] [2020-10-12 13:30:55,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:30:55,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:30:55,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841526524] [2020-10-12 13:30:55,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:55,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:55,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:55,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:55,609 INFO L87 Difference]: Start difference. First operand 18837 states and 24392 transitions. Second operand 7 states. [2020-10-12 13:31:10,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:10,524 INFO L93 Difference]: Finished difference Result 46788 states and 64098 transitions. [2020-10-12 13:31:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:31:10,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-12 13:31:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:10,608 INFO L225 Difference]: With dead ends: 46788 [2020-10-12 13:31:10,609 INFO L226 Difference]: Without dead ends: 28724 [2020-10-12 13:31:10,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:31:10,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28724 states. [2020-10-12 13:31:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28724 to 28447. [2020-10-12 13:31:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28447 states. [2020-10-12 13:31:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28447 states to 28447 states and 35656 transitions. [2020-10-12 13:31:11,292 INFO L78 Accepts]: Start accepts. Automaton has 28447 states and 35656 transitions. Word has length 290 [2020-10-12 13:31:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:31:11,293 INFO L479 AbstractCegarLoop]: Abstraction has 28447 states and 35656 transitions. [2020-10-12 13:31:11,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:31:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 28447 states and 35656 transitions. [2020-10-12 13:31:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-12 13:31:11,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:31:11,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:31:11,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:31:11,301 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:31:11,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:31:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1757846262, now seen corresponding path program 1 times [2020-10-12 13:31:11,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:31:11,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716840374] [2020-10-12 13:31:11,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:31:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:13,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:13,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-12 13:31:13,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:31:13,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2415 [2020-10-12 13:31:13,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:31:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:31:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-12 13:31:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:13,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:13,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:13,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:13,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:13,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:13,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:31:13,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:13,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:13,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:13,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:13,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:14,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:14,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:31:14,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 13:31:14,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:31:14,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:14,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:31:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:14,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:14,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:31:14,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:31:14,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 13:31:14,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:31:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:31:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 200 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:31:14,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716840374] [2020-10-12 13:31:14,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:14,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:31:14,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77026612] [2020-10-12 13:31:14,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:31:14,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:14,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:31:14,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:31:14,552 INFO L87 Difference]: Start difference. First operand 28447 states and 35656 transitions. Second operand 7 states. [2020-10-12 13:31:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:35,060 INFO L93 Difference]: Finished difference Result 71167 states and 90732 transitions. [2020-10-12 13:31:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:31:35,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-12 13:31:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:35,184 INFO L225 Difference]: With dead ends: 71167 [2020-10-12 13:31:35,184 INFO L226 Difference]: Without dead ends: 43493 [2020-10-12 13:31:35,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:31:35,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43493 states. [2020-10-12 13:31:35,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43493 to 37256. [2020-10-12 13:31:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37256 states. [2020-10-12 13:31:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37256 states to 37256 states and 47130 transitions. [2020-10-12 13:31:35,998 INFO L78 Accepts]: Start accepts. Automaton has 37256 states and 47130 transitions. Word has length 305 [2020-10-12 13:31:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:31:35,999 INFO L479 AbstractCegarLoop]: Abstraction has 37256 states and 47130 transitions. [2020-10-12 13:31:35,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:31:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 37256 states and 47130 transitions. [2020-10-12 13:31:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 13:31:36,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:31:36,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:31:36,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:31:36,007 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:31:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:31:36,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2030889185, now seen corresponding path program 1 times [2020-10-12 13:31:36,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:31:36,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503897236] [2020-10-12 13:31:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:31:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:37,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:37,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-12 13:31:37,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:31:37,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1147 [2020-10-12 13:31:37,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:37,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:37,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-12 13:31:37,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 13:31:37,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:37,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:37,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:37,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:31:37,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:37,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:37,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:37,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:31:37,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:31:37,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:37,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:31:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:37,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:37,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:31:37,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:37,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 13:31:37,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:37,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:31:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 13:31:37,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503897236] [2020-10-12 13:31:37,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:37,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:31:37,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358722474] [2020-10-12 13:31:37,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:31:37,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:37,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:31:37,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:31:37,900 INFO L87 Difference]: Start difference. First operand 37256 states and 47130 transitions. Second operand 5 states. [2020-10-12 13:31:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:52,579 INFO L93 Difference]: Finished difference Result 73813 states and 93693 transitions. [2020-10-12 13:31:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:31:52,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-12 13:31:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:52,657 INFO L225 Difference]: With dead ends: 73813 [2020-10-12 13:31:52,657 INFO L226 Difference]: Without dead ends: 37330 [2020-10-12 13:31:52,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:31:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37330 states. [2020-10-12 13:31:53,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37330 to 37268. [2020-10-12 13:31:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37268 states. [2020-10-12 13:31:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37268 states to 37268 states and 44919 transitions. [2020-10-12 13:31:53,297 INFO L78 Accepts]: Start accepts. Automaton has 37268 states and 44919 transitions. Word has length 306 [2020-10-12 13:31:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:31:53,297 INFO L479 AbstractCegarLoop]: Abstraction has 37268 states and 44919 transitions. [2020-10-12 13:31:53,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:31:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 37268 states and 44919 transitions. [2020-10-12 13:31:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-12 13:31:53,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:31:53,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:31:53,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:31:53,313 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:31:53,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:31:53,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1827606197, now seen corresponding path program 1 times [2020-10-12 13:31:53,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:31:53,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869719720] [2020-10-12 13:31:53,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:31:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:58,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:58,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-12 13:31:58,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:31:58,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4773 [2020-10-12 13:31:58,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:58,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:31:58,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:31:58,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-12 13:31:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:58,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:58,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:58,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:58,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:58,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:58,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:31:58,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:58,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:58,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:58,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:58,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:58,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:31:58,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:58,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 13:31:58,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:31:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:31:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:58,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:58,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:58,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:31:58,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:31:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 13:31:58,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:31:58,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:31:58,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:58,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 13:31:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:58,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:59,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:59,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 13:31:59,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-12 13:31:59,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:31:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 13:31:59,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 415 proven. 4 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 13:31:59,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869719720] [2020-10-12 13:31:59,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:59,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:31:59,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709188202] [2020-10-12 13:31:59,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:31:59,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:59,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:31:59,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:31:59,638 INFO L87 Difference]: Start difference. First operand 37268 states and 44919 transitions. Second operand 8 states. [2020-10-12 13:32:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:32:27,907 INFO L93 Difference]: Finished difference Result 94069 states and 117316 transitions. [2020-10-12 13:32:27,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 13:32:27,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 458 [2020-10-12 13:32:27,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:32:28,032 INFO L225 Difference]: With dead ends: 94069 [2020-10-12 13:32:28,032 INFO L226 Difference]: Without dead ends: 57574 [2020-10-12 13:32:28,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:32:28,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57574 states. [2020-10-12 13:32:28,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57574 to 53476. [2020-10-12 13:32:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53476 states. [2020-10-12 13:32:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53476 states to 53476 states and 64541 transitions. [2020-10-12 13:32:29,108 INFO L78 Accepts]: Start accepts. Automaton has 53476 states and 64541 transitions. Word has length 458 [2020-10-12 13:32:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:32:29,109 INFO L479 AbstractCegarLoop]: Abstraction has 53476 states and 64541 transitions. [2020-10-12 13:32:29,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:32:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 53476 states and 64541 transitions. [2020-10-12 13:32:29,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-12 13:32:29,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:32:29,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:32:29,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:32:29,124 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:32:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:32:29,124 INFO L82 PathProgramCache]: Analyzing trace with hash -423428998, now seen corresponding path program 1 times [2020-10-12 13:32:29,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:32:29,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545233509] [2020-10-12 13:32:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:32:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:30,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:30,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-12 13:32:30,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:32:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1652 [2020-10-12 13:32:30,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:32:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-12 13:32:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 13:32:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:32:31,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:32:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:31,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:31,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:31,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:32:31,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:32:31,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:32:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:32:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:32:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:31,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:31,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:32:31,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:31,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 13:32:31,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:31,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:32:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:32:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:31,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:32:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:31,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:31,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:31,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 13:32:31,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:31,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:32:31,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:31,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:32:31,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:31,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:32:31,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-12 13:32:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:31,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 13:32:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 13:32:31,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:32:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:31,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-12 13:32:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 183 proven. 3 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-12 13:32:31,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545233509] [2020-10-12 13:32:31,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:32:31,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:32:31,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252916352] [2020-10-12 13:32:31,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:32:31,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:32:31,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:32:31,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:32:31,590 INFO L87 Difference]: Start difference. First operand 53476 states and 64541 transitions. Second operand 5 states. [2020-10-12 13:32:52,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:32:52,931 INFO L93 Difference]: Finished difference Result 129576 states and 161216 transitions. [2020-10-12 13:32:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:32:52,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2020-10-12 13:32:52,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:32:53,103 INFO L225 Difference]: With dead ends: 129576 [2020-10-12 13:32:53,104 INFO L226 Difference]: Without dead ends: 76873 [2020-10-12 13:32:53,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:32:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76873 states. [2020-10-12 13:32:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76873 to 75293. [2020-10-12 13:32:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75293 states. [2020-10-12 13:32:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75293 states to 75293 states and 93021 transitions. [2020-10-12 13:32:54,194 INFO L78 Accepts]: Start accepts. Automaton has 75293 states and 93021 transitions. Word has length 467 [2020-10-12 13:32:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:32:54,195 INFO L479 AbstractCegarLoop]: Abstraction has 75293 states and 93021 transitions. [2020-10-12 13:32:54,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:32:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 75293 states and 93021 transitions. [2020-10-12 13:32:54,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-12 13:32:54,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:32:54,217 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:32:54,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:32:54,217 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:32:54,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:32:54,218 INFO L82 PathProgramCache]: Analyzing trace with hash 359941626, now seen corresponding path program 1 times [2020-10-12 13:32:54,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:32:54,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801117007] [2020-10-12 13:32:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:32:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:55,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:56,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:58,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:59,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:59,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-12 13:32:59,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 13:32:59,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 13:32:59,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:32:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:32:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-12 13:32:59,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:59,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:32:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:59,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:59,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:32:59,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:32:59,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:32:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:32:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:32:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:59,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:59,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:59,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:32:59,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:59,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 13:32:59,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:32:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:32:59,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:59,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:33:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:00,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:00,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:33:00,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:33:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 13:33:00,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:33:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:33:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 13:33:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-12 13:33:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:00,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:00,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:00,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:00,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:33:00,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:33:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 13:33:00,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:33:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:33:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:33:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-12 13:33:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:33:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:33:00,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:33:00,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:33:00,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:33:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:33:00,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:33:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:33:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:33:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:33:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:33:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 536 proven. 10 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2020-10-12 13:33:00,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801117007] [2020-10-12 13:33:00,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:33:00,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:33:00,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508091545] [2020-10-12 13:33:00,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:33:00,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:33:00,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:33:00,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:33:00,875 INFO L87 Difference]: Start difference. First operand 75293 states and 93021 transitions. Second operand 7 states.