/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:16,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:16,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:16,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:16,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:16,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:16,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:16,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:16,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:16,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:16,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:16,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:16,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:16,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:16,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:16,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:16,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:16,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:16,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:16,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:16,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:16,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:16,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:16,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:16,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:16,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:16,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:16,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:16,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:16,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:16,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:16,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:16,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:16,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:16,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:16,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:16,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:16,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:16,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:16,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:16,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:16,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:41:16,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:16,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:16,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:16,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:16,170 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:16,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:16,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:16,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:16,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:16,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:16,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:16,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:16,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:16,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:16,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:16,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:16,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:16,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:16,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:16,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:16,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:16,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:16,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:16,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:16,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:16,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:16,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:16,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:16,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:16,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:41:16,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:16,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:16,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:16,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:16,711 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:16,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 14:41:16,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c11353db5/3951ca6589114778821d228bb08126f5/FLAGd7334752c [2020-09-25 14:41:17,434 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:17,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 14:41:17,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c11353db5/3951ca6589114778821d228bb08126f5/FLAGd7334752c [2020-09-25 14:41:17,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c11353db5/3951ca6589114778821d228bb08126f5 [2020-09-25 14:41:17,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:17,719 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:17,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:17,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:17,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:17,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:17" (1/1) ... [2020-09-25 14:41:17,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283e1fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:17, skipping insertion in model container [2020-09-25 14:41:17,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:17" (1/1) ... [2020-09-25 14:41:17,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:17,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:18,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:18,319 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:18,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:18,598 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:18,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18 WrapperNode [2020-09-25 14:41:18,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:18,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:18,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:18,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:18,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18" (1/1) ... [2020-09-25 14:41:18,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18" (1/1) ... [2020-09-25 14:41:18,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18" (1/1) ... [2020-09-25 14:41:18,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18" (1/1) ... [2020-09-25 14:41:18,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18" (1/1) ... [2020-09-25 14:41:18,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18" (1/1) ... [2020-09-25 14:41:18,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18" (1/1) ... [2020-09-25 14:41:18,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:18,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:18,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:18,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:18,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:20,258 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:20,259 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:20,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:20 BoogieIcfgContainer [2020-09-25 14:41:20,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:20,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:20,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:20,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:20,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:17" (1/3) ... [2020-09-25 14:41:20,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:20, skipping insertion in model container [2020-09-25 14:41:20,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:18" (2/3) ... [2020-09-25 14:41:20,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:20, skipping insertion in model container [2020-09-25 14:41:20,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:20" (3/3) ... [2020-09-25 14:41:20,278 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-25 14:41:20,290 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:20,302 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:20,325 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:20,358 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:20,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:20,359 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:20,359 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:20,359 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:20,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:20,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:20,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 14:41:20,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:20,403 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] [2020-09-25 14:41:20,404 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-25 14:41:20,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:20,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808696751] [2020-09-25 14:41:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:20,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:41:21,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:41:21,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-09-25 14:41:21,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:21,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:21,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 14:41:21,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 14:41:21,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:21,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:21,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:41:21,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:21,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:21,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808696751] [2020-09-25 14:41:21,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:21,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:21,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50650253] [2020-09-25 14:41:21,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:21,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:21,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:21,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:21,740 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:41:23,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:23,721 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 14:41:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:23,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 14:41:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:23,754 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 14:41:23,754 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 14:41:23,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:23,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 14:41:23,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 14:41:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 14:41:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 14:41:23,880 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 43 [2020-09-25 14:41:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:23,884 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 14:41:23,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 14:41:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 14:41:23,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:23,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:23,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:23,896 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:23,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1041597203, now seen corresponding path program 1 times [2020-09-25 14:41:23,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:23,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404023394] [2020-09-25 14:41:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:25,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 14:41:25,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-09-25 14:41:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:25,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:41:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:25,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:25,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:25,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:25,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:41:25,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:25,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:41:25,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:25,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:25,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:25,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:25,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:41:25,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 14:41:25,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:25,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:41:25,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:25,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404023394] [2020-09-25 14:41:25,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:25,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:41:25,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828181058] [2020-09-25 14:41:25,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:25,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:25,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:25,884 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 8 states. [2020-09-25 14:41:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:28,997 INFO L93 Difference]: Finished difference Result 1743 states and 2321 transitions. [2020-09-25 14:41:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:41:28,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-09-25 14:41:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:29,007 INFO L225 Difference]: With dead ends: 1743 [2020-09-25 14:41:29,008 INFO L226 Difference]: Without dead ends: 1215 [2020-09-25 14:41:29,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:41:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2020-09-25 14:41:29,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1171. [2020-09-25 14:41:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-09-25 14:41:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1461 transitions. [2020-09-25 14:41:29,078 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1461 transitions. Word has length 123 [2020-09-25 14:41:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:29,079 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1461 transitions. [2020-09-25 14:41:29,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1461 transitions. [2020-09-25 14:41:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 14:41:29,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:29,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:29,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:29,083 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:29,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:29,084 INFO L82 PathProgramCache]: Analyzing trace with hash -203251606, now seen corresponding path program 1 times [2020-09-25 14:41:29,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:29,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222832634] [2020-09-25 14:41:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:29,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 14:41:31,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:41:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2702 [2020-09-25 14:41:31,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:41:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 14:41:31,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:31,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:41:31,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:31,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:41:31,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:32,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:32,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:32,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:32,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:32,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 14:41:32,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:32,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:32,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222832634] [2020-09-25 14:41:32,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:32,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:41:32,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654166510] [2020-09-25 14:41:32,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:41:32,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:32,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:41:32,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:32,492 INFO L87 Difference]: Start difference. First operand 1171 states and 1461 transitions. Second operand 12 states. [2020-09-25 14:41:35,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:35,693 INFO L93 Difference]: Finished difference Result 2575 states and 3274 transitions. [2020-09-25 14:41:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:41:35,697 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-09-25 14:41:35,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:35,714 INFO L225 Difference]: With dead ends: 2575 [2020-09-25 14:41:35,714 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 14:41:35,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:41:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 14:41:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1337. [2020-09-25 14:41:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-09-25 14:41:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1650 transitions. [2020-09-25 14:41:35,807 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1650 transitions. Word has length 132 [2020-09-25 14:41:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:35,808 INFO L479 AbstractCegarLoop]: Abstraction has 1337 states and 1650 transitions. [2020-09-25 14:41:35,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:41:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1650 transitions. [2020-09-25 14:41:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 14:41:35,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:35,828 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:35,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:35,829 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1479799897, now seen corresponding path program 1 times [2020-09-25 14:41:35,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:35,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320739169] [2020-09-25 14:41:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:40,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 14:41:40,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:40,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:40,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:40,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:41:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:41:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:40,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:40,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:40,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:40,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:40,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:40,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:41,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:41,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:41,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 14:41:41,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:41:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:41:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:41,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:41,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 14:41:41,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:41,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:41,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320739169] [2020-09-25 14:41:41,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:41,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:41,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240492471] [2020-09-25 14:41:41,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:41,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:41,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:41,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:41,493 INFO L87 Difference]: Start difference. First operand 1337 states and 1650 transitions. Second operand 8 states. [2020-09-25 14:41:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:44,692 INFO L93 Difference]: Finished difference Result 2879 states and 3555 transitions. [2020-09-25 14:41:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:41:44,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 211 [2020-09-25 14:41:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:44,704 INFO L225 Difference]: With dead ends: 2879 [2020-09-25 14:41:44,704 INFO L226 Difference]: Without dead ends: 1707 [2020-09-25 14:41:44,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:41:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-09-25 14:41:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1525. [2020-09-25 14:41:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2020-09-25 14:41:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1772 transitions. [2020-09-25 14:41:44,755 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1772 transitions. Word has length 211 [2020-09-25 14:41:44,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:44,756 INFO L479 AbstractCegarLoop]: Abstraction has 1525 states and 1772 transitions. [2020-09-25 14:41:44,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1772 transitions. [2020-09-25 14:41:44,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 14:41:44,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:44,760 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:44,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:44,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:44,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:44,761 INFO L82 PathProgramCache]: Analyzing trace with hash 169820027, now seen corresponding path program 1 times [2020-09-25 14:41:44,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:44,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843265739] [2020-09-25 14:41:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:46,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 14:41:49,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:49,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:41:49,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:41:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:41:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:49,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:49,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:50,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:50,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:50,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:50,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:41:50,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:50,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:50,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:50,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:50,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:50,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 14:41:50,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:50,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:50,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:41:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:41:50,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:41:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:50,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:50,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:50,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:41:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-25 14:41:50,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:50,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:41:50,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843265739] [2020-09-25 14:41:50,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:50,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:41:50,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060406043] [2020-09-25 14:41:50,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:41:50,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:50,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:41:50,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:41:50,824 INFO L87 Difference]: Start difference. First operand 1525 states and 1772 transitions. Second operand 9 states. [2020-09-25 14:41:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:55,440 INFO L93 Difference]: Finished difference Result 3710 states and 4504 transitions. [2020-09-25 14:41:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:41:55,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2020-09-25 14:41:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:55,454 INFO L225 Difference]: With dead ends: 3710 [2020-09-25 14:41:55,454 INFO L226 Difference]: Without dead ends: 2324 [2020-09-25 14:41:55,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:41:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2020-09-25 14:41:55,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 2139. [2020-09-25 14:41:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-09-25 14:41:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2483 transitions. [2020-09-25 14:41:55,521 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2483 transitions. Word has length 214 [2020-09-25 14:41:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:55,522 INFO L479 AbstractCegarLoop]: Abstraction has 2139 states and 2483 transitions. [2020-09-25 14:41:55,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:41:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2483 transitions. [2020-09-25 14:41:55,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 14:41:55,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:55,527 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:55,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:41:55,527 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash -12142129, now seen corresponding path program 1 times [2020-09-25 14:41:55,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:55,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408646137] [2020-09-25 14:41:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:56,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:56,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 14:41:56,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-25 14:41:56,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:56,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-09-25 14:41:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:41:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:56,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:56,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:56,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:56,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:56,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:56,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:56,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:56,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:56,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 14:41:56,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 14:41:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:56,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:56,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 14:41:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:56,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:56,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:56,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:41:56,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 14:41:56,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:56,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:56,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:41:56,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 14:41:56,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408646137] [2020-09-25 14:41:56,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:56,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:56,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314223007] [2020-09-25 14:41:56,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:56,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:56,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:56,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:56,474 INFO L87 Difference]: Start difference. First operand 2139 states and 2483 transitions. Second operand 5 states. [2020-09-25 14:41:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:58,385 INFO L93 Difference]: Finished difference Result 4562 states and 5410 transitions. [2020-09-25 14:41:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:58,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-09-25 14:41:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:58,399 INFO L225 Difference]: With dead ends: 4562 [2020-09-25 14:41:58,399 INFO L226 Difference]: Without dead ends: 2588 [2020-09-25 14:41:58,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2020-09-25 14:41:58,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2438. [2020-09-25 14:41:58,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2438 states. [2020-09-25 14:41:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 2796 transitions. [2020-09-25 14:41:58,463 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 2796 transitions. Word has length 247 [2020-09-25 14:41:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:58,464 INFO L479 AbstractCegarLoop]: Abstraction has 2438 states and 2796 transitions. [2020-09-25 14:41:58,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 2796 transitions. [2020-09-25 14:41:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 14:41:58,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:58,471 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:58,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:41:58,471 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:58,472 INFO L82 PathProgramCache]: Analyzing trace with hash 939096815, now seen corresponding path program 1 times [2020-09-25 14:41:58,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:58,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806094738] [2020-09-25 14:41:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:58,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:03,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:03,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-09-25 14:42:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:42:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-09-25 14:42:03,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:03,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:03,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-25 14:42:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 14:42:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:03,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:03,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:03,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:03,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:42:03,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:03,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:03,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:04,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 14:42:04,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 14:42:04,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:04,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:04,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:42:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 14:42:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:04,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-25 14:42:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:04,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:04,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:04,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 14:42:04,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:04,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:42:04,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806094738] [2020-09-25 14:42:04,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:04,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:42:04,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659899649] [2020-09-25 14:42:04,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:42:04,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:04,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:42:04,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:42:04,693 INFO L87 Difference]: Start difference. First operand 2438 states and 2796 transitions. Second operand 9 states.