/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/Problem11_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:07:09,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:07:09,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:07:10,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:07:10,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:07:10,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:07:10,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:07:10,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:07:10,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:07:10,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:07:10,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:07:10,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:07:10,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:07:10,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:07:10,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:07:10,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:07:10,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:07:10,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:07:10,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:07:10,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:07:10,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:07:10,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:07:10,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:07:10,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:07:10,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:07:10,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:07:10,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:07:10,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:07:10,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:07:10,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:07:10,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:07:10,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:07:10,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:07:10,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:07:10,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:07:10,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:07:10,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:07:10,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:07:10,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:07:10,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:07:10,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:07:10,100 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 13:07:10,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:07:10,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:07:10,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:07:10,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:07:10,138 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:07:10,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:07:10,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:07:10,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:07:10,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:07:10,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:07:10,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:07:10,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:07:10,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:07:10,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:07:10,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:07:10,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:07:10,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:07:10,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:07:10,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:07:10,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:07:10,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:07:10,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:07:10,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:07:10,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:07:10,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:07:10,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:07:10,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:07:10,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:07:10,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:07:10,144 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 13:07:10,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:07:10,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:07:10,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:07:10,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:07:10,448 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:07:10,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-12 13:07:10,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e22489537/667052d395be4bfaa451bd494a2cbbd6/FLAGdecb70de2 [2020-10-12 13:07:11,128 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:07:11,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-12 13:07:11,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e22489537/667052d395be4bfaa451bd494a2cbbd6/FLAGdecb70de2 [2020-10-12 13:07:11,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e22489537/667052d395be4bfaa451bd494a2cbbd6 [2020-10-12 13:07:11,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:07:11,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:07:11,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:07:11,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:07:11,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:07:11,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:07:11" (1/1) ... [2020-10-12 13:07:11,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:11, skipping insertion in model container [2020-10-12 13:07:11,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:07:11" (1/1) ... [2020-10-12 13:07:11,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:07:11,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:07:12,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:07:12,266 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:07:12,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:07:12,581 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:07:12,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12 WrapperNode [2020-10-12 13:07:12,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:07:12,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:07:12,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:07:12,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:07:12,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12" (1/1) ... [2020-10-12 13:07:12,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12" (1/1) ... [2020-10-12 13:07:12,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12" (1/1) ... [2020-10-12 13:07:12,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12" (1/1) ... [2020-10-12 13:07:12,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12" (1/1) ... [2020-10-12 13:07:12,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12" (1/1) ... [2020-10-12 13:07:12,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12" (1/1) ... [2020-10-12 13:07:12,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:07:12,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:07:12,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:07:12,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:07:12,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12" (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 13:07:12,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:07:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:07:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:07:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:07:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:07:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:07:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:07:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:07:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:07:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:07:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:07:14,542 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:07:14,542 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:07:14,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:07:14 BoogieIcfgContainer [2020-10-12 13:07:14,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:07:14,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:07:14,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:07:14,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:07:14,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:07:11" (1/3) ... [2020-10-12 13:07:14,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cab44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:07:14, skipping insertion in model container [2020-10-12 13:07:14,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:12" (2/3) ... [2020-10-12 13:07:14,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cab44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:07:14, skipping insertion in model container [2020-10-12 13:07:14,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:07:14" (3/3) ... [2020-10-12 13:07:14,561 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label05.c [2020-10-12 13:07:14,572 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:07:14,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:07:14,596 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:07:14,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:07:14,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:07:14,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:07:14,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:07:14,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:07:14,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:07:14,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:07:14,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:07:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-12 13:07:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 13:07:14,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:14,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:14,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:14,718 INFO L82 PathProgramCache]: Analyzing trace with hash 642669955, now seen corresponding path program 1 times [2020-10-12 13:07:14,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:14,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073822552] [2020-10-12 13:07:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:14,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:15,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:15,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:07:15,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-12 13:07:15,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:07:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:07:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:07:15,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:15,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:15,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:15,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:15,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:07:15,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:15,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:15,652 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 13:07:15,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073822552] [2020-10-12 13:07:15,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:07:15,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:07:15,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577895835] [2020-10-12 13:07:15,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:07:15,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:15,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:07:15,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:07:15,682 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-12 13:07:18,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:18,121 INFO L93 Difference]: Finished difference Result 806 states and 1404 transitions. [2020-10-12 13:07:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:18,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-12 13:07:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:18,141 INFO L225 Difference]: With dead ends: 806 [2020-10-12 13:07:18,142 INFO L226 Difference]: Without dead ends: 434 [2020-10-12 13:07:18,152 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 13:07:18,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-12 13:07:18,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 428. [2020-10-12 13:07:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-12 13:07:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 617 transitions. [2020-10-12 13:07:18,249 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 617 transitions. Word has length 70 [2020-10-12 13:07:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:18,250 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 617 transitions. [2020-10-12 13:07:18,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:07:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 617 transitions. [2020-10-12 13:07:18,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 13:07:18,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:18,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:18,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:07:18,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:18,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:18,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1962693410, now seen corresponding path program 1 times [2020-10-12 13:07:18,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:18,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217368837] [2020-10-12 13:07:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:19,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 13:07:19,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1614 [2020-10-12 13:07:19,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:07:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:07:19,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:20,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:07:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:20,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:20,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:20,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:07:20,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:20,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 13:07:20,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:20,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:07:20,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:07:20,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217368837] [2020-10-12 13:07:20,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:07:20,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:07:20,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305545303] [2020-10-12 13:07:20,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:07:20,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:07:20,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:07:20,311 INFO L87 Difference]: Start difference. First operand 428 states and 617 transitions. Second operand 7 states. [2020-10-12 13:07:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:22,811 INFO L93 Difference]: Finished difference Result 1276 states and 1888 transitions. [2020-10-12 13:07:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:07:22,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-12 13:07:22,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:22,818 INFO L225 Difference]: With dead ends: 1276 [2020-10-12 13:07:22,819 INFO L226 Difference]: Without dead ends: 854 [2020-10-12 13:07:22,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:07:22,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-10-12 13:07:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 819. [2020-10-12 13:07:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-10-12 13:07:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1134 transitions. [2020-10-12 13:07:22,875 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1134 transitions. Word has length 142 [2020-10-12 13:07:22,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:22,876 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1134 transitions. [2020-10-12 13:07:22,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:07:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1134 transitions. [2020-10-12 13:07:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 13:07:22,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:22,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:22,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:07:22,881 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:22,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:22,881 INFO L82 PathProgramCache]: Analyzing trace with hash 358837557, now seen corresponding path program 1 times [2020-10-12 13:07:22,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:22,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528257283] [2020-10-12 13:07:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:23,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:25,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:25,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 13:07:25,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2773 [2020-10-12 13:07:25,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:07:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 13:07:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 13:07:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:25,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:25,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:25,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:07:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:26,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:26,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:26,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:26,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:07:26,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:26,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 13:07:26,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:07:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:07:26,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528257283] [2020-10-12 13:07:26,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:26,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:07:26,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372995606] [2020-10-12 13:07:26,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:07:26,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:26,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:07:26,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:07:26,233 INFO L87 Difference]: Start difference. First operand 819 states and 1134 transitions. Second operand 8 states. [2020-10-12 13:07:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:28,966 INFO L93 Difference]: Finished difference Result 1768 states and 2428 transitions. [2020-10-12 13:07:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:07:28,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-10-12 13:07:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:28,973 INFO L225 Difference]: With dead ends: 1768 [2020-10-12 13:07:28,973 INFO L226 Difference]: Without dead ends: 827 [2020-10-12 13:07:28,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:07:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2020-10-12 13:07:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 819. [2020-10-12 13:07:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-10-12 13:07:29,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1123 transitions. [2020-10-12 13:07:29,007 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1123 transitions. Word has length 143 [2020-10-12 13:07:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:29,008 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1123 transitions. [2020-10-12 13:07:29,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:07:29,008 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1123 transitions. [2020-10-12 13:07:29,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 13:07:29,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:29,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:29,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:07:29,012 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash -208173314, now seen corresponding path program 1 times [2020-10-12 13:07:29,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:29,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489115122] [2020-10-12 13:07:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:29,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:30,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:30,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 13:07:30,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1341 [2020-10-12 13:07:30,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:07:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:07:30,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:30,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:30,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:07:30,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:30,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:30,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:30,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:07:30,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:30,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 13:07:30,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:30,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:07:30,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:07:30,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489115122] [2020-10-12 13:07:30,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:07:30,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:07:30,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023117268] [2020-10-12 13:07:30,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:07:30,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:30,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:07:30,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:07:30,821 INFO L87 Difference]: Start difference. First operand 819 states and 1123 transitions. Second operand 7 states. [2020-10-12 13:07:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:33,330 INFO L93 Difference]: Finished difference Result 2252 states and 3115 transitions. [2020-10-12 13:07:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:07:33,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-12 13:07:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:33,342 INFO L225 Difference]: With dead ends: 2252 [2020-10-12 13:07:33,342 INFO L226 Difference]: Without dead ends: 1439 [2020-10-12 13:07:33,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:07:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2020-10-12 13:07:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1411. [2020-10-12 13:07:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2020-10-12 13:07:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1771 transitions. [2020-10-12 13:07:33,409 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1771 transitions. Word has length 144 [2020-10-12 13:07:33,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:33,410 INFO L479 AbstractCegarLoop]: Abstraction has 1411 states and 1771 transitions. [2020-10-12 13:07:33,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:07:33,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1771 transitions. [2020-10-12 13:07:33,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-12 13:07:33,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:33,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:33,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:07:33,416 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:33,417 INFO L82 PathProgramCache]: Analyzing trace with hash -39665028, now seen corresponding path program 1 times [2020-10-12 13:07:33,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:33,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471942776] [2020-10-12 13:07:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:33,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:34,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:34,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 13:07:34,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:07:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1300 [2020-10-12 13:07:34,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:07:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-12 13:07:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:34,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:34,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:34,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:07:34,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:34,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:34,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:35,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:35,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:07:35,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:35,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-12 13:07:35,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:07:35,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:07:35,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471942776] [2020-10-12 13:07:35,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:35,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:07:35,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287594910] [2020-10-12 13:07:35,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:07:35,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:35,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:07:35,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:07:35,525 INFO L87 Difference]: Start difference. First operand 1411 states and 1771 transitions. Second operand 7 states. [2020-10-12 13:07:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:38,669 INFO L93 Difference]: Finished difference Result 3652 states and 4898 transitions. [2020-10-12 13:07:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:07:38,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-10-12 13:07:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:38,685 INFO L225 Difference]: With dead ends: 3652 [2020-10-12 13:07:38,685 INFO L226 Difference]: Without dead ends: 2435 [2020-10-12 13:07:38,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:07:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2020-10-12 13:07:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2220. [2020-10-12 13:07:38,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2220 states. [2020-10-12 13:07:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2797 transitions. [2020-10-12 13:07:38,755 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2797 transitions. Word has length 186 [2020-10-12 13:07:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:38,755 INFO L479 AbstractCegarLoop]: Abstraction has 2220 states and 2797 transitions. [2020-10-12 13:07:38,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:07:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2797 transitions. [2020-10-12 13:07:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-12 13:07:38,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:38,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:38,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:07:38,759 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:38,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:38,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1013443732, now seen corresponding path program 1 times [2020-10-12 13:07:38,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:38,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018994145] [2020-10-12 13:07:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:38,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:39,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:39,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 13:07:39,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-12 13:07:39,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:07:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:07:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:39,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:39,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:39,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:39,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:07:39,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:39,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:39,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:39,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:07:39,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-12 13:07:39,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:39,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:39,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:39,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:07:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:07:39,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018994145] [2020-10-12 13:07:39,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:39,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:07:39,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661979873] [2020-10-12 13:07:39,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:07:39,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:39,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:07:39,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:39,466 INFO L87 Difference]: Start difference. First operand 2220 states and 2797 transitions. Second operand 5 states. [2020-10-12 13:07:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:41,412 INFO L93 Difference]: Finished difference Result 5043 states and 6606 transitions. [2020-10-12 13:07:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:41,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-12 13:07:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:41,429 INFO L225 Difference]: With dead ends: 5043 [2020-10-12 13:07:41,430 INFO L226 Difference]: Without dead ends: 3207 [2020-10-12 13:07:41,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:07:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2020-10-12 13:07:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 2995. [2020-10-12 13:07:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2995 states. [2020-10-12 13:07:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3856 transitions. [2020-10-12 13:07:41,543 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3856 transitions. Word has length 201 [2020-10-12 13:07:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:41,546 INFO L479 AbstractCegarLoop]: Abstraction has 2995 states and 3856 transitions. [2020-10-12 13:07:41,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:07:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3856 transitions. [2020-10-12 13:07:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 13:07:41,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:41,552 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, 3, 3, 3, 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] [2020-10-12 13:07:41,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:07:41,553 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:41,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:41,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1495295771, now seen corresponding path program 1 times [2020-10-12 13:07:41,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:41,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597577925] [2020-10-12 13:07:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:41,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:42,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:43,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:43,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 13:07:43,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-12 13:07:43,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-12 13:07:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:07:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:43,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:43,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:43,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:43,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:07:43,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:43,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:43,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:43,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:43,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:07:43,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:07:43,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:07:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:43,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:43,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:07:43,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:43,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 13:07:43,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:43,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 13:07:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 13:07:43,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597577925] [2020-10-12 13:07:43,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:43,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:07:43,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493169445] [2020-10-12 13:07:43,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:07:43,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:43,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:07:43,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:43,913 INFO L87 Difference]: Start difference. First operand 2995 states and 3856 transitions. Second operand 5 states. [2020-10-12 13:07:46,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:46,032 INFO L93 Difference]: Finished difference Result 6416 states and 8422 transitions. [2020-10-12 13:07:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:46,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-12 13:07:46,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:46,053 INFO L225 Difference]: With dead ends: 6416 [2020-10-12 13:07:46,053 INFO L226 Difference]: Without dead ends: 3805 [2020-10-12 13:07:46,061 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 [2020-10-12 13:07:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2020-10-12 13:07:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3779. [2020-10-12 13:07:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3779 states. [2020-10-12 13:07:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 4849 transitions. [2020-10-12 13:07:46,153 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 4849 transitions. Word has length 258 [2020-10-12 13:07:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:46,154 INFO L479 AbstractCegarLoop]: Abstraction has 3779 states and 4849 transitions. [2020-10-12 13:07:46,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:07:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 4849 transitions. [2020-10-12 13:07:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 13:07:46,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:46,160 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, 3, 3, 3, 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] [2020-10-12 13:07:46,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:07:46,160 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:46,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:46,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1594261687, now seen corresponding path program 1 times [2020-10-12 13:07:46,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:46,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581158609] [2020-10-12 13:07:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:48,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:48,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 13:07:48,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1917 [2020-10-12 13:07:48,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-12 13:07:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 13:07:48,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:48,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:48,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:48,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:48,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:07:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:48,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:48,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:48,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:07:48,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:07:48,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:07:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:48,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:48,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:07:48,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:48,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 13:07:48,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:07:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-12 13:07:48,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581158609] [2020-10-12 13:07:48,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:48,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:07:48,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388496963] [2020-10-12 13:07:48,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:07:48,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:07:48,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:48,676 INFO L87 Difference]: Start difference. First operand 3779 states and 4849 transitions. Second operand 5 states. [2020-10-12 13:07:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:50,650 INFO L93 Difference]: Finished difference Result 6417 states and 8386 transitions. [2020-10-12 13:07:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:50,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-12 13:07:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:50,669 INFO L225 Difference]: With dead ends: 6417 [2020-10-12 13:07:50,669 INFO L226 Difference]: Without dead ends: 3793 [2020-10-12 13:07:50,677 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 13:07:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2020-10-12 13:07:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3779. [2020-10-12 13:07:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3779 states. [2020-10-12 13:07:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 4833 transitions. [2020-10-12 13:07:50,769 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 4833 transitions. Word has length 260 [2020-10-12 13:07:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:50,769 INFO L479 AbstractCegarLoop]: Abstraction has 3779 states and 4833 transitions. [2020-10-12 13:07:50,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:07:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 4833 transitions. [2020-10-12 13:07:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-12 13:07:50,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:50,776 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:50,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:07:50,776 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:50,777 INFO L82 PathProgramCache]: Analyzing trace with hash -2123949885, now seen corresponding path program 1 times [2020-10-12 13:07:50,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:50,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885711644] [2020-10-12 13:07:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:50,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:51,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:51,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-12 13:07:51,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:07:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-12 13:07:51,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-12 13:07:51,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:07:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:51,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:51,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:51,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:51,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:07:51,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:51,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:51,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:51,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:07:51,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:51,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:07:51,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:07:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:51,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:51,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:07:51,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:51,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:07:51,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:07:51,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:07:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 13:07:51,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885711644] [2020-10-12 13:07:51,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:51,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:07:51,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443870491] [2020-10-12 13:07:51,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:07:51,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:51,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:07:51,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:51,987 INFO L87 Difference]: Start difference. First operand 3779 states and 4833 transitions. Second operand 5 states. [2020-10-12 13:07:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:54,498 INFO L93 Difference]: Finished difference Result 8935 states and 11692 transitions. [2020-10-12 13:07:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:54,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-12 13:07:54,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:54,522 INFO L225 Difference]: With dead ends: 8935 [2020-10-12 13:07:54,522 INFO L226 Difference]: Without dead ends: 5540 [2020-10-12 13:07:54,532 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 [2020-10-12 13:07:54,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5540 states. [2020-10-12 13:07:54,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5540 to 4560. [2020-10-12 13:07:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2020-10-12 13:07:54,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 5747 transitions. [2020-10-12 13:07:54,663 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 5747 transitions. Word has length 270 [2020-10-12 13:07:54,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:54,664 INFO L479 AbstractCegarLoop]: Abstraction has 4560 states and 5747 transitions. [2020-10-12 13:07:54,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:07:54,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 5747 transitions. [2020-10-12 13:07:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-12 13:07:54,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:54,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:54,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:07:54,672 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:54,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1766074161, now seen corresponding path program 1 times [2020-10-12 13:07:54,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:54,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470885603] [2020-10-12 13:07:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:55,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:55,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-12 13:07:55,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-12 13:07:55,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:07:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:07:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:55,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:55,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:55,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:55,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:55,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:07:55,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:55,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:55,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:55,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:55,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:55,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:55,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:07:55,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 13:07:55,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:07:55,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:07:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:55,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:55,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:07:55,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 13:07:55,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:07:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:07:55,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470885603] [2020-10-12 13:07:55,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:55,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:07:55,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750964341] [2020-10-12 13:07:55,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:07:55,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:55,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:07:55,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:07:55,897 INFO L87 Difference]: Start difference. First operand 4560 states and 5747 transitions. Second operand 7 states. [2020-10-12 13:07:59,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:59,240 INFO L93 Difference]: Finished difference Result 9419 states and 12120 transitions. [2020-10-12 13:07:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:07:59,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-12 13:07:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:59,274 INFO L225 Difference]: With dead ends: 9419 [2020-10-12 13:07:59,275 INFO L226 Difference]: Without dead ends: 5243 [2020-10-12 13:07:59,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:07:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2020-10-12 13:07:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 5196. [2020-10-12 13:07:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5196 states. [2020-10-12 13:07:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 6547 transitions. [2020-10-12 13:07:59,402 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 6547 transitions. Word has length 280 [2020-10-12 13:07:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:59,403 INFO L479 AbstractCegarLoop]: Abstraction has 5196 states and 6547 transitions. [2020-10-12 13:07:59,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:07:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 6547 transitions. [2020-10-12 13:07:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-12 13:07:59,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:59,413 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:59,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:07:59,413 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:59,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1617119003, now seen corresponding path program 1 times [2020-10-12 13:07:59,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:59,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278629461] [2020-10-12 13:07:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:59,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:59,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-12 13:07:59,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-12 13:07:59,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-12 13:07:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:07:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:00,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:00,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:00,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:00,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:00,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:08:00,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:00,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:00,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:00,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:00,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:00,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:08:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:08:00,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:08:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:08:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:00,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:00,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:08:00,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:08:00,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:08:00,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278629461] [2020-10-12 13:08:00,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:00,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:00,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501117681] [2020-10-12 13:08:00,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:00,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:00,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:00,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:00,579 INFO L87 Difference]: Start difference. First operand 5196 states and 6547 transitions. Second operand 7 states. [2020-10-12 13:08:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:03,470 INFO L93 Difference]: Finished difference Result 11013 states and 14054 transitions. [2020-10-12 13:08:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:08:03,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-12 13:08:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:03,488 INFO L225 Difference]: With dead ends: 11013 [2020-10-12 13:08:03,488 INFO L226 Difference]: Without dead ends: 6201 [2020-10-12 13:08:03,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:08:03,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6201 states. [2020-10-12 13:08:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6201 to 6155. [2020-10-12 13:08:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6155 states. [2020-10-12 13:08:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 7587 transitions. [2020-10-12 13:08:03,620 INFO L78 Accepts]: Start accepts. Automaton has 6155 states and 7587 transitions. Word has length 290 [2020-10-12 13:08:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:03,621 INFO L479 AbstractCegarLoop]: Abstraction has 6155 states and 7587 transitions. [2020-10-12 13:08:03,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6155 states and 7587 transitions. [2020-10-12 13:08:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-12 13:08:03,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:03,631 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:03,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:08:03,631 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:03,632 INFO L82 PathProgramCache]: Analyzing trace with hash -807311937, now seen corresponding path program 1 times [2020-10-12 13:08:03,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:03,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564825491] [2020-10-12 13:08:03,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:04,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:04,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 13:08:04,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-12 13:08:04,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:08:04,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 13:08:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:04,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:04,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:04,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:04,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:08:04,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:04,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:04,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:04,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:04,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:04,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 13:08:04,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:08:04,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:04,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:04,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:08:04,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:04,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 13:08:04,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:08:04,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:08:04,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564825491] [2020-10-12 13:08:04,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:04,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:04,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337990475] [2020-10-12 13:08:04,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:04,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:04,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:04,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:04,867 INFO L87 Difference]: Start difference. First operand 6155 states and 7587 transitions. Second operand 7 states. [2020-10-12 13:08:07,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:07,542 INFO L93 Difference]: Finished difference Result 11183 states and 13992 transitions. [2020-10-12 13:08:07,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:08:07,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-12 13:08:07,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:07,563 INFO L225 Difference]: With dead ends: 11183 [2020-10-12 13:08:07,563 INFO L226 Difference]: Without dead ends: 6582 [2020-10-12 13:08:07,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:08:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2020-10-12 13:08:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6547. [2020-10-12 13:08:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6547 states. [2020-10-12 13:08:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 8058 transitions. [2020-10-12 13:08:07,721 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 8058 transitions. Word has length 295 [2020-10-12 13:08:07,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:07,721 INFO L479 AbstractCegarLoop]: Abstraction has 6547 states and 8058 transitions. [2020-10-12 13:08:07,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 8058 transitions. [2020-10-12 13:08:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-12 13:08:07,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:07,731 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:07,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 13:08:07,731 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:07,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:07,732 INFO L82 PathProgramCache]: Analyzing trace with hash -308755135, now seen corresponding path program 1 times [2020-10-12 13:08:07,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:07,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181575829] [2020-10-12 13:08:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:09,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:09,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 13:08:09,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2169 [2020-10-12 13:08:09,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:08:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:08:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 13:08:09,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:10,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:10,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:10,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:10,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:08:10,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:08:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:10,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:10,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:10,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 13:08:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:08:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:10,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:10,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:10,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:08:10,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:10,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:08:10,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:08:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 126 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:08:10,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181575829] [2020-10-12 13:08:10,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:10,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:10,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403255584] [2020-10-12 13:08:10,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:10,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:10,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:10,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:10,503 INFO L87 Difference]: Start difference. First operand 6547 states and 8058 transitions. Second operand 7 states. [2020-10-12 13:08:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:13,114 INFO L93 Difference]: Finished difference Result 14071 states and 17830 transitions. [2020-10-12 13:08:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:08:13,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-12 13:08:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:13,149 INFO L225 Difference]: With dead ends: 14071 [2020-10-12 13:08:13,150 INFO L226 Difference]: Without dead ends: 7908 [2020-10-12 13:08:13,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:08:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7908 states. [2020-10-12 13:08:13,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7908 to 5944. [2020-10-12 13:08:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2020-10-12 13:08:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 7377 transitions. [2020-10-12 13:08:13,307 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 7377 transitions. Word has length 295 [2020-10-12 13:08:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:13,308 INFO L479 AbstractCegarLoop]: Abstraction has 5944 states and 7377 transitions. [2020-10-12 13:08:13,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 7377 transitions. [2020-10-12 13:08:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-12 13:08:13,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:13,318 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:13,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 13:08:13,318 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:13,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:13,318 INFO L82 PathProgramCache]: Analyzing trace with hash -306627702, now seen corresponding path program 1 times [2020-10-12 13:08:13,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:13,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972718484] [2020-10-12 13:08:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:13,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:13,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:13,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-12 13:08:13,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-12 13:08:13,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 13:08:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:08:13,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:13,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:13,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:13,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:13,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:13,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:13,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:13,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:08:13,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 13:08:13,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 13:08:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:08:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:14,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:14,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:08:14,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:08:14,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:08:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:08:14,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972718484] [2020-10-12 13:08:14,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:14,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:14,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306407658] [2020-10-12 13:08:14,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:14,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:14,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:14,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:14,367 INFO L87 Difference]: Start difference. First operand 5944 states and 7377 transitions. Second operand 7 states. [2020-10-12 13:08:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:17,242 INFO L93 Difference]: Finished difference Result 12848 states and 16732 transitions. [2020-10-12 13:08:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:08:17,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-12 13:08:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:17,263 INFO L225 Difference]: With dead ends: 12848 [2020-10-12 13:08:17,263 INFO L226 Difference]: Without dead ends: 6714 [2020-10-12 13:08:17,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:08:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2020-10-12 13:08:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 6532. [2020-10-12 13:08:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6532 states. [2020-10-12 13:08:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 8039 transitions. [2020-10-12 13:08:17,425 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 8039 transitions. Word has length 311 [2020-10-12 13:08:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:17,425 INFO L479 AbstractCegarLoop]: Abstraction has 6532 states and 8039 transitions. [2020-10-12 13:08:17,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 8039 transitions. [2020-10-12 13:08:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-12 13:08:17,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:17,438 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:17,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 13:08:17,438 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:17,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1528102205, now seen corresponding path program 1 times [2020-10-12 13:08:17,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:17,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473294443] [2020-10-12 13:08:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:18,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:18,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-12 13:08:18,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-10-12 13:08:18,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:08:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:08:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-12 13:08:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:18,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:18,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:18,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:18,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:18,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:19,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:19,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:19,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 13:08:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:08:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:19,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:19,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:19,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:19,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 13:08:19,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:19,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 13:08:19,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 13:08:19,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 187 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:08:19,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473294443] [2020-10-12 13:08:19,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:19,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:19,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811287261] [2020-10-12 13:08:19,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:19,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:19,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:19,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:19,578 INFO L87 Difference]: Start difference. First operand 6532 states and 8039 transitions. Second operand 7 states. [2020-10-12 13:08:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:21,928 INFO L93 Difference]: Finished difference Result 13168 states and 16528 transitions. [2020-10-12 13:08:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:08:21,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-12 13:08:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:21,949 INFO L225 Difference]: With dead ends: 13168 [2020-10-12 13:08:21,949 INFO L226 Difference]: Without dead ends: 6642 [2020-10-12 13:08:21,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:08:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6642 states. [2020-10-12 13:08:22,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6642 to 6530. [2020-10-12 13:08:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6530 states. [2020-10-12 13:08:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6530 states to 6530 states and 7782 transitions. [2020-10-12 13:08:22,098 INFO L78 Accepts]: Start accepts. Automaton has 6530 states and 7782 transitions. Word has length 337 [2020-10-12 13:08:22,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:22,099 INFO L479 AbstractCegarLoop]: Abstraction has 6530 states and 7782 transitions. [2020-10-12 13:08:22,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:22,100 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states and 7782 transitions. [2020-10-12 13:08:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-12 13:08:22,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:22,113 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:22,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 13:08:22,113 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:22,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1875407323, now seen corresponding path program 1 times [2020-10-12 13:08:22,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:22,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285170831] [2020-10-12 13:08:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:22,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:22,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-12 13:08:22,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-12 13:08:22,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-12 13:08:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:08:22,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:22,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:22,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:22,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:22,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:22,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:22,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:22,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:23,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-12 13:08:23,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 13:08:23,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 13:08:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-12 13:08:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:23,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:08:23,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 13:08:23,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:08:23,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:08:23,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285170831] [2020-10-12 13:08:23,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:23,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:23,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316068260] [2020-10-12 13:08:23,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:23,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:23,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:23,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:23,347 INFO L87 Difference]: Start difference. First operand 6530 states and 7782 transitions. Second operand 7 states. [2020-10-12 13:08:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:25,938 INFO L93 Difference]: Finished difference Result 15005 states and 18088 transitions. [2020-10-12 13:08:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:08:25,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-12 13:08:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:25,962 INFO L225 Difference]: With dead ends: 15005 [2020-10-12 13:08:25,962 INFO L226 Difference]: Without dead ends: 8481 [2020-10-12 13:08:25,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:08:25,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8481 states. [2020-10-12 13:08:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8481 to 8439. [2020-10-12 13:08:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8439 states. [2020-10-12 13:08:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8439 states to 8439 states and 10078 transitions. [2020-10-12 13:08:26,120 INFO L78 Accepts]: Start accepts. Automaton has 8439 states and 10078 transitions. Word has length 349 [2020-10-12 13:08:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:26,121 INFO L479 AbstractCegarLoop]: Abstraction has 8439 states and 10078 transitions. [2020-10-12 13:08:26,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 8439 states and 10078 transitions. [2020-10-12 13:08:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-12 13:08:26,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:26,135 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:26,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 13:08:26,136 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:26,136 INFO L82 PathProgramCache]: Analyzing trace with hash 51996370, now seen corresponding path program 1 times [2020-10-12 13:08:26,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:26,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016191164] [2020-10-12 13:08:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:27,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:27,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-12 13:08:27,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1595 [2020-10-12 13:08:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 302 [2020-10-12 13:08:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:08:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:27,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:27,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:27,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:27,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:27,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:27,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:27,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:27,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:08:27,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:27,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:08:27,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:27,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:27,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:08:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:28,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:28,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:28,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 13:08:28,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 13:08:28,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 13:08:28,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-12 13:08:28,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016191164] [2020-10-12 13:08:28,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:28,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:08:28,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135680047] [2020-10-12 13:08:28,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:08:28,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:28,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:08:28,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:08:28,269 INFO L87 Difference]: Start difference. First operand 8439 states and 10078 transitions. Second operand 5 states. [2020-10-12 13:08:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:30,737 INFO L93 Difference]: Finished difference Result 17497 states and 20844 transitions. [2020-10-12 13:08:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:08:30,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2020-10-12 13:08:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:30,752 INFO L225 Difference]: With dead ends: 17497 [2020-10-12 13:08:30,752 INFO L226 Difference]: Without dead ends: 9064 [2020-10-12 13:08:30,763 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 [2020-10-12 13:08:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9064 states. [2020-10-12 13:08:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9064 to 8817. [2020-10-12 13:08:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8817 states. [2020-10-12 13:08:30,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8817 states to 8817 states and 10215 transitions. [2020-10-12 13:08:30,916 INFO L78 Accepts]: Start accepts. Automaton has 8817 states and 10215 transitions. Word has length 360 [2020-10-12 13:08:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:30,917 INFO L479 AbstractCegarLoop]: Abstraction has 8817 states and 10215 transitions. [2020-10-12 13:08:30,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:08:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand 8817 states and 10215 transitions. [2020-10-12 13:08:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-12 13:08:30,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:30,933 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:30,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 13:08:30,934 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:30,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:30,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1210407537, now seen corresponding path program 1 times [2020-10-12 13:08:30,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:30,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668802567] [2020-10-12 13:08:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:31,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:31,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:31,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-12 13:08:31,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-12 13:08:31,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:31,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-12 13:08:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:08:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:31,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:31,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:31,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:31,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:31,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:31,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:31,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:08:31,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:08:31,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:08:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:31,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:31,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:08:31,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 13:08:31,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 13:08:31,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:31,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-12 13:08:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:31,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:31,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:08:31,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 13:08:31,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:08:31,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-12 13:08:32,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668802567] [2020-10-12 13:08:32,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:32,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:08:32,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312141608] [2020-10-12 13:08:32,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:08:32,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:32,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:08:32,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:08:32,249 INFO L87 Difference]: Start difference. First operand 8817 states and 10215 transitions. Second operand 8 states. [2020-10-12 13:08:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:35,268 INFO L93 Difference]: Finished difference Result 19186 states and 22190 transitions. [2020-10-12 13:08:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:08:35,270 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 369 [2020-10-12 13:08:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:35,290 INFO L225 Difference]: With dead ends: 19186 [2020-10-12 13:08:35,290 INFO L226 Difference]: Without dead ends: 10375 [2020-10-12 13:08:35,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:08:35,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10375 states. [2020-10-12 13:08:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10375 to 9003. [2020-10-12 13:08:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9003 states. [2020-10-12 13:08:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9003 states to 9003 states and 10431 transitions. [2020-10-12 13:08:35,454 INFO L78 Accepts]: Start accepts. Automaton has 9003 states and 10431 transitions. Word has length 369 [2020-10-12 13:08:35,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:35,455 INFO L479 AbstractCegarLoop]: Abstraction has 9003 states and 10431 transitions. [2020-10-12 13:08:35,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:08:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 9003 states and 10431 transitions. [2020-10-12 13:08:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-12 13:08:35,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:35,468 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:35,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 13:08:35,469 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1942824214, now seen corresponding path program 1 times [2020-10-12 13:08:35,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:35,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726154558] [2020-10-12 13:08:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:35,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:37,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:37,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-12 13:08:37,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:37,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2048 [2020-10-12 13:08:37,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 13:08:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:08:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 382 [2020-10-12 13:08:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:37,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:37,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:37,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:37,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:37,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:37,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:37,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:08:37,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:08:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:37,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:08:37,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:37,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:37,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:38,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:38,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:08:38,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-12 13:08:38,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:38,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:08:38,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:38,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:08:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 7 proven. 125 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 13:08:38,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726154558] [2020-10-12 13:08:38,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:38,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:08:38,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138833232] [2020-10-12 13:08:38,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:08:38,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:38,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:08:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:08:38,340 INFO L87 Difference]: Start difference. First operand 9003 states and 10431 transitions. Second operand 10 states. [2020-10-12 13:08:43,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:43,836 INFO L93 Difference]: Finished difference Result 20529 states and 25715 transitions. [2020-10-12 13:08:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 13:08:43,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 376 [2020-10-12 13:08:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:43,888 INFO L225 Difference]: With dead ends: 20529 [2020-10-12 13:08:43,889 INFO L226 Difference]: Without dead ends: 20527 [2020-10-12 13:08:43,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2020-10-12 13:08:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20527 states. [2020-10-12 13:08:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20527 to 18116. [2020-10-12 13:08:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18116 states. [2020-10-12 13:08:44,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18116 states to 18116 states and 21328 transitions. [2020-10-12 13:08:44,285 INFO L78 Accepts]: Start accepts. Automaton has 18116 states and 21328 transitions. Word has length 376 [2020-10-12 13:08:44,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:44,285 INFO L479 AbstractCegarLoop]: Abstraction has 18116 states and 21328 transitions. [2020-10-12 13:08:44,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:08:44,285 INFO L276 IsEmpty]: Start isEmpty. Operand 18116 states and 21328 transitions. [2020-10-12 13:08:44,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-12 13:08:44,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:44,303 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, 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, 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 13:08:44,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 13:08:44,303 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:44,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:44,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1306790277, now seen corresponding path program 1 times [2020-10-12 13:08:44,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:44,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598938785] [2020-10-12 13:08:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:45,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:46,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:46,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-12 13:08:46,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:08:46,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2511 [2020-10-12 13:08:46,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:46,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:08:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:08:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-12 13:08:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:47,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:47,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:47,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:08:47,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:47,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:47,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:47,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:08:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:47,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:47,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:47,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:47,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:47,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:47,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 13:08:47,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:08:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:08:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:47,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:47,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:47,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 13:08:47,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 13:08:47,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 13:08:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:47,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-12 13:08:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:47,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:47,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:08:47,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 13:08:47,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:08:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:08:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 183 proven. 191 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-12 13:08:47,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598938785] [2020-10-12 13:08:47,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:47,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:08:47,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134731947] [2020-10-12 13:08:47,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 13:08:47,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:47,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 13:08:47,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:08:47,949 INFO L87 Difference]: Start difference. First operand 18116 states and 21328 transitions. Second operand 11 states. [2020-10-12 13:08:53,377 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-12 13:08:55,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:55,960 INFO L93 Difference]: Finished difference Result 46673 states and 58124 transitions. [2020-10-12 13:08:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 13:08:55,961 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 386 [2020-10-12 13:08:55,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:56,023 INFO L225 Difference]: With dead ends: 46673 [2020-10-12 13:08:56,023 INFO L226 Difference]: Without dead ends: 28505 [2020-10-12 13:08:56,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2020-10-12 13:08:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28505 states. [2020-10-12 13:08:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28505 to 26187. [2020-10-12 13:08:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26187 states. [2020-10-12 13:08:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26187 states to 26187 states and 30801 transitions. [2020-10-12 13:08:56,597 INFO L78 Accepts]: Start accepts. Automaton has 26187 states and 30801 transitions. Word has length 386 [2020-10-12 13:08:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:56,597 INFO L479 AbstractCegarLoop]: Abstraction has 26187 states and 30801 transitions. [2020-10-12 13:08:56,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 13:08:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 26187 states and 30801 transitions. [2020-10-12 13:08:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-12 13:08:56,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:56,617 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, 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, 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] [2020-10-12 13:08:56,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 13:08:56,618 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:56,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1210642165, now seen corresponding path program 1 times [2020-10-12 13:08:56,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:56,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963715824] [2020-10-12 13:08:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:57,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-12 13:08:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-12 13:08:57,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-12 13:08:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 13:08:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:57,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:57,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:57,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:08:57,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:57,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:57,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:57,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:57,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:57,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:08:57,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:57,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 13:08:57,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:08:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:57,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:57,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 13:08:57,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:08:57,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 13:08:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:58,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-12 13:08:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:58,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:58,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:58,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:08:58,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 13:08:58,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:08:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-12 13:08:58,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963715824] [2020-10-12 13:08:58,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:58,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:58,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122164814] [2020-10-12 13:08:58,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:58,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:58,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:58,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:58,596 INFO L87 Difference]: Start difference. First operand 26187 states and 30801 transitions. Second operand 7 states. [2020-10-12 13:09:01,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:01,063 INFO L93 Difference]: Finished difference Result 48657 states and 57298 transitions. [2020-10-12 13:09:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:09:01,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-12 13:09:01,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:01,110 INFO L225 Difference]: With dead ends: 48657 [2020-10-12 13:09:01,110 INFO L226 Difference]: Without dead ends: 26306 [2020-10-12 13:09:01,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:09:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26306 states. [2020-10-12 13:09:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26306 to 26185. [2020-10-12 13:09:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26185 states. [2020-10-12 13:09:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26185 states to 26185 states and 30724 transitions. [2020-10-12 13:09:02,466 INFO L78 Accepts]: Start accepts. Automaton has 26185 states and 30724 transitions. Word has length 391 [2020-10-12 13:09:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:02,467 INFO L479 AbstractCegarLoop]: Abstraction has 26185 states and 30724 transitions. [2020-10-12 13:09:02,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:09:02,467 INFO L276 IsEmpty]: Start isEmpty. Operand 26185 states and 30724 transitions. [2020-10-12 13:09:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-12 13:09:02,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:02,482 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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:02,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 13:09:02,483 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:02,483 INFO L82 PathProgramCache]: Analyzing trace with hash -887354279, now seen corresponding path program 1 times [2020-10-12 13:09:02,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:02,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679075138] [2020-10-12 13:09:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:02,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:02,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:04,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:04,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-12 13:09:04,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:09:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2385 [2020-10-12 13:09:04,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:09:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-12 13:09:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-12 13:09:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:05,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:05,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:05,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:05,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:05,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:05,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:09:05,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:05,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 13:09:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 13:09:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:09:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:05,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:05,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:05,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:09:05,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:09:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 13:09:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:09:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:05,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-12 13:09:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:05,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:05,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:09:05,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 13:09:05,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:05,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:09:05,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 236 proven. 200 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 13:09:05,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679075138] [2020-10-12 13:09:05,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:05,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:09:05,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719764681] [2020-10-12 13:09:05,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:09:05,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:05,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:09:05,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:09:05,864 INFO L87 Difference]: Start difference. First operand 26185 states and 30724 transitions. Second operand 9 states. [2020-10-12 13:09:10,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:10,274 INFO L93 Difference]: Finished difference Result 57298 states and 67893 transitions. [2020-10-12 13:09:10,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 13:09:10,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 391 [2020-10-12 13:09:10,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:10,339 INFO L225 Difference]: With dead ends: 57298 [2020-10-12 13:09:10,339 INFO L226 Difference]: Without dead ends: 33625 [2020-10-12 13:09:10,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:09:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33625 states. [2020-10-12 13:09:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33625 to 33051. [2020-10-12 13:09:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33051 states. [2020-10-12 13:09:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33051 states to 33051 states and 38637 transitions. [2020-10-12 13:09:10,859 INFO L78 Accepts]: Start accepts. Automaton has 33051 states and 38637 transitions. Word has length 391 [2020-10-12 13:09:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:10,859 INFO L479 AbstractCegarLoop]: Abstraction has 33051 states and 38637 transitions. [2020-10-12 13:09:10,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:09:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 33051 states and 38637 transitions. [2020-10-12 13:09:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-12 13:09:10,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:10,880 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:09:10,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 13:09:10,880 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:10,881 INFO L82 PathProgramCache]: Analyzing trace with hash 7082528, now seen corresponding path program 1 times [2020-10-12 13:09:10,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:10,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259738611] [2020-10-12 13:09:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:13,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 494 [2020-10-12 13:09:13,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:09:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2338 [2020-10-12 13:09:13,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:09:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-12 13:09:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-12 13:09:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:13,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:13,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:13,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:13,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:13,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:13,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:13,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:13,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:13,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:09:13,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:09:13,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:13,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:13,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:13,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:13,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:09:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:13,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 13:09:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:09:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 13:09:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:13,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-12 13:09:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:13,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:13,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:09:13,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-12 13:09:13,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:09:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 361 proven. 64 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 13:09:14,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259738611] [2020-10-12 13:09:14,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:14,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:09:14,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168780819] [2020-10-12 13:09:14,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:09:14,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:14,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:09:14,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:09:14,052 INFO L87 Difference]: Start difference. First operand 33051 states and 38637 transitions. Second operand 8 states. [2020-10-12 13:09:19,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:19,528 INFO L93 Difference]: Finished difference Result 51915 states and 61303 transitions. [2020-10-12 13:09:19,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:09:19,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 480 [2020-10-12 13:09:19,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:19,630 INFO L225 Difference]: With dead ends: 51915 [2020-10-12 13:09:19,631 INFO L226 Difference]: Without dead ends: 51913 [2020-10-12 13:09:19,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:09:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51913 states. [2020-10-12 13:09:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51913 to 49407. [2020-10-12 13:09:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49407 states. [2020-10-12 13:09:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49407 states to 49407 states and 58274 transitions. [2020-10-12 13:09:20,318 INFO L78 Accepts]: Start accepts. Automaton has 49407 states and 58274 transitions. Word has length 480 [2020-10-12 13:09:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:20,319 INFO L479 AbstractCegarLoop]: Abstraction has 49407 states and 58274 transitions. [2020-10-12 13:09:20,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:09:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 49407 states and 58274 transitions. [2020-10-12 13:09:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2020-10-12 13:09:20,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:20,358 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-12 13:09:20,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 13:09:20,358 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:20,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1937009164, now seen corresponding path program 1 times [2020-10-12 13:09:20,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:20,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380225342] [2020-10-12 13:09:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:23,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 582 [2020-10-12 13:09:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:09:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3497 [2020-10-12 13:09:23,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:09:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:09:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 576 [2020-10-12 13:09:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:24,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:24,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:24,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:24,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:24,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:24,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:24,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:24,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:24,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:09:24,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:09:24,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 13:09:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:24,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:09:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:24,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:24,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:24,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 13:09:24,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-12 13:09:24,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-12 13:09:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:24,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-10-12 13:09:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:25,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:25,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:09:25,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-12 13:09:25,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:09:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 4 proven. 200 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2020-10-12 13:09:26,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380225342] [2020-10-12 13:09:26,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:26,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:09:26,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981378747] [2020-10-12 13:09:26,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:09:26,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:26,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:09:26,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:09:26,387 INFO L87 Difference]: Start difference. First operand 49407 states and 58274 transitions. Second operand 10 states. [2020-10-12 13:09:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:36,044 INFO L93 Difference]: Finished difference Result 86578 states and 104753 transitions. [2020-10-12 13:09:36,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 13:09:36,045 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 568 [2020-10-12 13:09:36,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:36,226 INFO L225 Difference]: With dead ends: 86578 [2020-10-12 13:09:36,227 INFO L226 Difference]: Without dead ends: 86576 [2020-10-12 13:09:36,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2020-10-12 13:09:36,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86576 states. [2020-10-12 13:09:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86576 to 81286. [2020-10-12 13:09:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81286 states. [2020-10-12 13:09:39,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81286 states to 81286 states and 96470 transitions. [2020-10-12 13:09:39,164 INFO L78 Accepts]: Start accepts. Automaton has 81286 states and 96470 transitions. Word has length 568 [2020-10-12 13:09:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:39,164 INFO L479 AbstractCegarLoop]: Abstraction has 81286 states and 96470 transitions. [2020-10-12 13:09:39,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:09:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 81286 states and 96470 transitions. [2020-10-12 13:09:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-12 13:09:39,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:39,217 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:09:39,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 13:09:39,218 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:39,218 INFO L82 PathProgramCache]: Analyzing trace with hash -457472027, now seen corresponding path program 1 times [2020-10-12 13:09:39,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:39,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514160814] [2020-10-12 13:09:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:39,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:40,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:40,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 585 [2020-10-12 13:09:40,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:09:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-12 13:09:40,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:09:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-12 13:09:40,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-12 13:09:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:40,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:40,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:40,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:40,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:09:40,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:40,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:40,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:40,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:09:40,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 13:09:40,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:40,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:09:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:40,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:40,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:40,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 13:09:40,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 13:09:40,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:40,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 13:09:40,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-12 13:09:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:40,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:41,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:41,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:09:41,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 13:09:41,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:09:41,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 452 proven. 64 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-12 13:09:41,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514160814] [2020-10-12 13:09:41,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:41,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:09:41,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540752173] [2020-10-12 13:09:41,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:09:41,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:41,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:09:41,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:09:41,264 INFO L87 Difference]: Start difference. First operand 81286 states and 96470 transitions. Second operand 8 states. [2020-10-12 13:09:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:47,230 INFO L93 Difference]: Finished difference Result 109181 states and 130261 transitions. [2020-10-12 13:09:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:09:47,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 571 [2020-10-12 13:09:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:47,454 INFO L225 Difference]: With dead ends: 109181 [2020-10-12 13:09:47,455 INFO L226 Difference]: Without dead ends: 109179 [2020-10-12 13:09:47,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:09:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109179 states. [2020-10-12 13:09:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109179 to 106856. [2020-10-12 13:09:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106856 states. [2020-10-12 13:09:49,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106856 states to 106856 states and 127382 transitions. [2020-10-12 13:09:49,042 INFO L78 Accepts]: Start accepts. Automaton has 106856 states and 127382 transitions. Word has length 571 [2020-10-12 13:09:49,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:49,043 INFO L479 AbstractCegarLoop]: Abstraction has 106856 states and 127382 transitions. [2020-10-12 13:09:49,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:09:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 106856 states and 127382 transitions. [2020-10-12 13:09:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-12 13:09:49,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:49,086 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, 5, 5, 5, 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, 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] [2020-10-12 13:09:49,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 13:09:49,086 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash 613811815, now seen corresponding path program 1 times [2020-10-12 13:09:49,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:49,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083004956] [2020-10-12 13:09:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:54,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:54,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 593 [2020-10-12 13:09:54,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:09:54,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 13:09:54,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:09:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:09:54,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:54,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:54,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:54,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:09:54,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:54,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:54,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:54,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:54,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:54,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:54,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:09:54,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 13:09:54,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:09:54,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:54,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:09:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:54,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:54,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 13:09:54,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 13:09:54,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:09:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:54,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-12 13:09:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:54,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:54,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:54,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 13:09:54,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 13:09:54,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-12 13:09:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:54,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-12 13:09:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:54,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:54,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:09:54,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:54,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 13:09:54,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:54,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-12 13:09:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 380 proven. 236 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2020-10-12 13:09:55,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083004956] [2020-10-12 13:09:55,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:55,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:09:55,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136939141] [2020-10-12 13:09:55,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:09:55,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:55,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:09:55,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:09:55,310 INFO L87 Difference]: Start difference. First operand 106856 states and 127382 transitions. Second operand 7 states. [2020-10-12 13:09:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:59,268 INFO L93 Difference]: Finished difference Result 215066 states and 256218 transitions. [2020-10-12 13:09:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:09:59,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 577 [2020-10-12 13:09:59,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:59,516 INFO L225 Difference]: With dead ends: 215066 [2020-10-12 13:09:59,516 INFO L226 Difference]: Without dead ends: 110534 [2020-10-12 13:09:59,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:09:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110534 states. [2020-10-12 13:10:03,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110534 to 109917. [2020-10-12 13:10:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109917 states. [2020-10-12 13:10:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109917 states to 109917 states and 129682 transitions. [2020-10-12 13:10:03,898 INFO L78 Accepts]: Start accepts. Automaton has 109917 states and 129682 transitions. Word has length 577 [2020-10-12 13:10:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:03,899 INFO L479 AbstractCegarLoop]: Abstraction has 109917 states and 129682 transitions. [2020-10-12 13:10:03,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:10:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 109917 states and 129682 transitions. [2020-10-12 13:10:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-10-12 13:10:03,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:03,942 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, 5, 5, 5, 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, 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] [2020-10-12 13:10:03,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 13:10:03,942 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:03,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:03,942 INFO L82 PathProgramCache]: Analyzing trace with hash 40283942, now seen corresponding path program 1 times [2020-10-12 13:10:03,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:03,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565586344] [2020-10-12 13:10:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:04,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:05,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:09,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:09,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-12 13:10:09,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:10:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5213 [2020-10-12 13:10:09,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 13:10:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:10:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 501 [2020-10-12 13:10:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:09,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:09,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:09,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:09,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:10:09,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:09,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:09,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:09,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:09,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:09,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:10:09,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:09,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:10:09,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:09,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:10:09,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:09,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:10:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:09,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:09,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:10:09,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:09,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 13:10:09,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:10:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:09,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:10:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:10,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:10,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 13:10:10,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:10:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-12 13:10:10,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 13:10:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-12 13:10:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:10,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:10,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:10,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 13:10:10,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-12 13:10:10,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:10,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:10:10,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:10,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-12 13:10:10,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:11,176 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-12 13:10:11,418 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-12 13:10:11,691 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-12 13:10:12,008 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-12 13:10:12,287 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-12 13:10:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 526 proven. 362 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 13:10:15,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565586344] [2020-10-12 13:10:15,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:15,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 13:10:15,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742573094] [2020-10-12 13:10:15,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 13:10:15,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:15,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 13:10:15,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-12 13:10:15,699 INFO L87 Difference]: Start difference. First operand 109917 states and 129682 transitions. Second operand 20 states. [2020-10-12 13:10:15,886 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 43 [2020-10-12 13:10:16,166 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 52 [2020-10-12 13:10:19,188 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-12 13:10:19,580 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-12 13:10:20,076 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-12 13:10:20,506 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2020-10-12 13:10:20,890 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-10-12 13:10:21,107 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-12 13:10:21,508 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-10-12 13:10:21,996 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 86 [2020-10-12 13:10:22,636 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2020-10-12 13:10:22,985 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-12 13:10:23,250 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-12 13:10:23,512 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-12 13:10:23,701 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-12 13:10:24,175 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-12 13:10:24,620 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-12 13:10:25,091 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2020-10-12 13:10:26,079 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2020-10-12 13:10:26,471 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-12 13:10:26,845 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2020-10-12 13:10:27,934 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-12 13:10:28,551 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2020-10-12 13:10:29,286 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2020-10-12 13:10:30,349 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-12 13:10:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:32,100 INFO L93 Difference]: Finished difference Result 220526 states and 260621 transitions. [2020-10-12 13:10:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 13:10:32,101 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 579 [2020-10-12 13:10:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:32,349 INFO L225 Difference]: With dead ends: 220526 [2020-10-12 13:10:32,349 INFO L226 Difference]: Without dead ends: 114267 [2020-10-12 13:10:32,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=603, Invalid=2367, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 13:10:32,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114267 states. [2020-10-12 13:10:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114267 to 113607. [2020-10-12 13:10:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113607 states. [2020-10-12 13:10:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113607 states to 113607 states and 133902 transitions. [2020-10-12 13:10:34,560 INFO L78 Accepts]: Start accepts. Automaton has 113607 states and 133902 transitions. Word has length 579 [2020-10-12 13:10:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:34,560 INFO L479 AbstractCegarLoop]: Abstraction has 113607 states and 133902 transitions. [2020-10-12 13:10:34,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 13:10:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 113607 states and 133902 transitions. [2020-10-12 13:10:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-12 13:10:34,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:34,607 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, 5, 5, 5, 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, 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] [2020-10-12 13:10:34,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 13:10:34,607 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:34,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:34,608 INFO L82 PathProgramCache]: Analyzing trace with hash 870197805, now seen corresponding path program 1 times [2020-10-12 13:10:34,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:34,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138726379] [2020-10-12 13:10:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:34,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:34,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:36,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:39,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:39,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 619 [2020-10-12 13:10:39,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:10:39,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 13:10:39,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:39,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 13:10:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:10:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 613 [2020-10-12 13:10:39,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:39,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:39,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:39,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:39,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:39,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:10:39,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:39,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:39,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:39,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:10:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 13:10:40,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 13:10:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:10:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:40,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:40,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:10:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-12 13:10:40,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:10:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-12 13:10:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:40,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:40,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:40,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 13:10:40,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:10:40,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2020-10-12 13:10:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:10:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 13:10:40,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:10:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 203 proven. 545 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-12 13:10:41,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138726379] [2020-10-12 13:10:41,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:41,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 13:10:41,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435226202] [2020-10-12 13:10:41,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 13:10:41,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:41,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 13:10:41,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:10:41,372 INFO L87 Difference]: Start difference. First operand 113607 states and 133902 transitions. Second operand 14 states.