/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:43:59,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:43:59,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:43:59,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:43:59,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:43:59,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:43:59,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:43:59,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:43:59,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:43:59,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:43:59,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:43:59,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:43:59,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:43:59,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:43:59,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:43:59,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:43:59,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:43:59,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:43:59,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:43:59,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:43:59,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:43:59,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:43:59,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:43:59,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:43:59,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:43:59,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:43:59,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:43:59,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:43:59,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:43:59,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:43:59,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:43:59,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:43:59,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:43:59,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:43:59,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:43:59,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:43:59,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:43:59,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:43:59,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:43:59,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:43:59,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:43:59,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:43:59,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:43:59,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:43:59,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:43:59,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:43:59,609 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:43:59,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:43:59,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:43:59,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:43:59,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:43:59,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:43:59,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:43:59,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:43:59,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:43:59,611 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:43:59,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:43:59,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:43:59,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:43:59,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:43:59,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:43:59,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:43:59,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:43:59,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:43:59,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:43:59,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:43:59,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:43:59,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:43:59,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:43:59,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:43:59,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:43:59,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:43:59,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:43:59,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:43:59,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:43:59,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:43:59,985 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:43:59,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2020-10-13 09:44:00,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1e10e492/19db563954e141428bd4639e0f42c9eb/FLAGe657c9021 [2020-10-13 09:44:00,812 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:44:00,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label08.c [2020-10-13 09:44:00,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1e10e492/19db563954e141428bd4639e0f42c9eb/FLAGe657c9021 [2020-10-13 09:44:00,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1e10e492/19db563954e141428bd4639e0f42c9eb [2020-10-13 09:44:00,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:44:00,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:44:00,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:44:00,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:44:00,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:44:00,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:44:00" (1/1) ... [2020-10-13 09:44:00,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac0f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:00, skipping insertion in model container [2020-10-13 09:44:00,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:44:00" (1/1) ... [2020-10-13 09:44:00,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:44:01,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:44:02,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:44:02,383 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:44:02,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:44:02,932 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:44:02,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02 WrapperNode [2020-10-13 09:44:02,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:44:02,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:44:02,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:44:02,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:44:02,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02" (1/1) ... [2020-10-13 09:44:02,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02" (1/1) ... [2020-10-13 09:44:03,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02" (1/1) ... [2020-10-13 09:44:03,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02" (1/1) ... [2020-10-13 09:44:03,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02" (1/1) ... [2020-10-13 09:44:03,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02" (1/1) ... [2020-10-13 09:44:03,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02" (1/1) ... [2020-10-13 09:44:03,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:44:03,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:44:03,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:44:03,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:44:03,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:44:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:44:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:44:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:44:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:44:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:44:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:44:03,389 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:44:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:44:03,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:44:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:44:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:44:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:44:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:44:03,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:44:03,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:44:10,034 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:44:10,034 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:44:10,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:44:10 BoogieIcfgContainer [2020-10-13 09:44:10,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:44:10,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:44:10,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:44:10,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:44:10,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:44:00" (1/3) ... [2020-10-13 09:44:10,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383fed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:44:10, skipping insertion in model container [2020-10-13 09:44:10,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:44:02" (2/3) ... [2020-10-13 09:44:10,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3383fed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:44:10, skipping insertion in model container [2020-10-13 09:44:10,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:44:10" (3/3) ... [2020-10-13 09:44:10,073 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label08.c [2020-10-13 09:44:10,086 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:44:10,100 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:44:10,117 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:44:10,149 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:44:10,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:44:10,150 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:44:10,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:44:10,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:44:10,150 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:44:10,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:44:10,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:44:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:44:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 09:44:10,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:10,197 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] [2020-10-13 09:44:10,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:10,205 INFO L82 PathProgramCache]: Analyzing trace with hash 526679754, now seen corresponding path program 1 times [2020-10-13 09:44:10,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:10,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33204733] [2020-10-13 09:44:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:10,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:10,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 09:44:10,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:10,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-13 09:44:10,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:44:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:44:10,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:44:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:44:10,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:10,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:10,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:10,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:44:10,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:44:10,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:10,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33204733] [2020-10-13 09:44:10,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:44:10,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:44:10,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321262908] [2020-10-13 09:44:11,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:44:11,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:11,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:44:11,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:44:11,024 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:44:20,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:20,900 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:44:20,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:20,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 09:44:20,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:20,936 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:44:20,937 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:44:20,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:20,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:44:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:44:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:44:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2331 transitions. [2020-10-13 09:44:21,113 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2331 transitions. Word has length 27 [2020-10-13 09:44:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:21,113 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2331 transitions. [2020-10-13 09:44:21,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:44:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2331 transitions. [2020-10-13 09:44:21,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 09:44:21,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:21,122 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:44:21,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:44:21,123 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:21,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:21,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1211608110, now seen corresponding path program 1 times [2020-10-13 09:44:21,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:21,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950631855] [2020-10-13 09:44:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:21,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:22,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:22,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:44:22,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-13 09:44:22,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:44:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:44:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:22,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:22,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:22,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:22,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:22,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:44:22,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:22,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:22,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:22,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:22,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:44:22,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:44:22,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:22,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:44:22,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:22,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950631855] [2020-10-13 09:44:22,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:22,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:22,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781753324] [2020-10-13 09:44:22,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:22,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:22,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:22,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:22,361 INFO L87 Difference]: Start difference. First operand 1425 states and 2331 transitions. Second operand 5 states. [2020-10-13 09:44:33,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:33,514 INFO L93 Difference]: Finished difference Result 4276 states and 7041 transitions. [2020-10-13 09:44:33,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:33,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 09:44:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:33,536 INFO L225 Difference]: With dead ends: 4276 [2020-10-13 09:44:33,536 INFO L226 Difference]: Without dead ends: 2857 [2020-10-13 09:44:33,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:33,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-13 09:44:33,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-13 09:44:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-13 09:44:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4171 transitions. [2020-10-13 09:44:33,647 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4171 transitions. Word has length 97 [2020-10-13 09:44:33,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:33,648 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4171 transitions. [2020-10-13 09:44:33,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:33,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4171 transitions. [2020-10-13 09:44:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 09:44:33,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:33,653 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:44:33,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:44:33,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:33,654 INFO L82 PathProgramCache]: Analyzing trace with hash 34726003, now seen corresponding path program 1 times [2020-10-13 09:44:33,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:33,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081249147] [2020-10-13 09:44:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:33,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:33,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:34,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:34,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:44:34,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-13 09:44:34,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:44:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:44:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:34,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:34,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:34,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:34,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:34,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:44:34,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:34,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:34,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:34,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:34,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:34,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:44:34,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:34,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:44:34,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:34,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:34,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:34,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:44:34,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:34,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081249147] [2020-10-13 09:44:34,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:34,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:34,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639043227] [2020-10-13 09:44:34,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:34,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:34,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:34,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:34,596 INFO L87 Difference]: Start difference. First operand 2853 states and 4171 transitions. Second operand 5 states. [2020-10-13 09:44:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:45,990 INFO L93 Difference]: Finished difference Result 8551 states and 12662 transitions. [2020-10-13 09:44:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:45,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 09:44:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:46,028 INFO L225 Difference]: With dead ends: 8551 [2020-10-13 09:44:46,028 INFO L226 Difference]: Without dead ends: 5704 [2020-10-13 09:44:46,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2020-10-13 09:44:46,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5696. [2020-10-13 09:44:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-13 09:44:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7745 transitions. [2020-10-13 09:44:46,214 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7745 transitions. Word has length 98 [2020-10-13 09:44:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:46,215 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7745 transitions. [2020-10-13 09:44:46,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:46,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7745 transitions. [2020-10-13 09:44:46,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 09:44:46,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:46,220 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:44:46,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:44:46,220 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:46,221 INFO L82 PathProgramCache]: Analyzing trace with hash 764906870, now seen corresponding path program 1 times [2020-10-13 09:44:46,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:46,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137716784] [2020-10-13 09:44:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:46,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:46,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:46,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:46,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:44:46,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-13 09:44:46,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:46,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:44:46,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:44:46,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:46,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:46,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:46,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:46,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:44:46,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:47,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:47,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:47,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:44:47,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:47,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:44:47,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:47,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:44:47,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:47,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137716784] [2020-10-13 09:44:47,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:47,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:47,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010932159] [2020-10-13 09:44:47,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:47,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:47,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:47,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:47,134 INFO L87 Difference]: Start difference. First operand 5696 states and 7745 transitions. Second operand 5 states. [2020-10-13 09:44:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:59,180 INFO L93 Difference]: Finished difference Result 14242 states and 19941 transitions. [2020-10-13 09:44:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:59,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 09:44:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:59,233 INFO L225 Difference]: With dead ends: 14242 [2020-10-13 09:44:59,234 INFO L226 Difference]: Without dead ends: 8552 [2020-10-13 09:44:59,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2020-10-13 09:44:59,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 8536. [2020-10-13 09:44:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8536 states. [2020-10-13 09:44:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8536 states to 8536 states and 11291 transitions. [2020-10-13 09:44:59,647 INFO L78 Accepts]: Start accepts. Automaton has 8536 states and 11291 transitions. Word has length 101 [2020-10-13 09:44:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:59,649 INFO L479 AbstractCegarLoop]: Abstraction has 8536 states and 11291 transitions. [2020-10-13 09:44:59,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 8536 states and 11291 transitions. [2020-10-13 09:44:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 09:44:59,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:59,658 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:59,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:44:59,659 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:59,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:59,660 INFO L82 PathProgramCache]: Analyzing trace with hash 982412298, now seen corresponding path program 1 times [2020-10-13 09:44:59,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:59,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10272069] [2020-10-13 09:44:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:59,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:00,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:00,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 09:45:00,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:00,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-13 09:45:00,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:45:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:45:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:00,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:00,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:00,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:45:00,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:00,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:00,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:00,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:00,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:00,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:45:00,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:00,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 09:45:00,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:00,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 09:45:00,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:01,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10272069] [2020-10-13 09:45:01,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:01,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:01,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278033510] [2020-10-13 09:45:01,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:01,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:01,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:01,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:01,075 INFO L87 Difference]: Start difference. First operand 8536 states and 11291 transitions. Second operand 5 states. [2020-10-13 09:45:13,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:13,601 INFO L93 Difference]: Finished difference Result 21336 states and 28998 transitions. [2020-10-13 09:45:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:13,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 09:45:13,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:13,673 INFO L225 Difference]: With dead ends: 21336 [2020-10-13 09:45:13,674 INFO L226 Difference]: Without dead ends: 12806 [2020-10-13 09:45:13,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12806 states. [2020-10-13 09:45:14,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12806 to 12798. [2020-10-13 09:45:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12798 states. [2020-10-13 09:45:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12798 states to 12798 states and 16352 transitions. [2020-10-13 09:45:14,091 INFO L78 Accepts]: Start accepts. Automaton has 12798 states and 16352 transitions. Word has length 159 [2020-10-13 09:45:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:14,092 INFO L479 AbstractCegarLoop]: Abstraction has 12798 states and 16352 transitions. [2020-10-13 09:45:14,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 12798 states and 16352 transitions. [2020-10-13 09:45:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 09:45:14,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:14,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:14,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:45:14,100 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:14,100 INFO L82 PathProgramCache]: Analyzing trace with hash -447450838, now seen corresponding path program 1 times [2020-10-13 09:45:14,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:14,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33442172] [2020-10-13 09:45:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:14,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:14,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:15,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:15,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 09:45:15,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-13 09:45:15,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:45:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:45:15,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:15,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:15,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:45:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:15,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:15,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:15,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:15,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 09:45:15,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-13 09:45:15,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 09:45:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:15,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33442172] [2020-10-13 09:45:15,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:15,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:15,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845019139] [2020-10-13 09:45:15,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:15,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:15,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:15,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:15,586 INFO L87 Difference]: Start difference. First operand 12798 states and 16352 transitions. Second operand 5 states. [2020-10-13 09:45:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:26,602 INFO L93 Difference]: Finished difference Result 34085 states and 44476 transitions. [2020-10-13 09:45:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:26,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-13 09:45:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:26,697 INFO L225 Difference]: With dead ends: 34085 [2020-10-13 09:45:26,697 INFO L226 Difference]: Without dead ends: 21293 [2020-10-13 09:45:26,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21293 states. [2020-10-13 09:45:27,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21293 to 21285. [2020-10-13 09:45:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21285 states. [2020-10-13 09:45:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21285 states to 21285 states and 26100 transitions. [2020-10-13 09:45:28,272 INFO L78 Accepts]: Start accepts. Automaton has 21285 states and 26100 transitions. Word has length 175 [2020-10-13 09:45:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:28,273 INFO L479 AbstractCegarLoop]: Abstraction has 21285 states and 26100 transitions. [2020-10-13 09:45:28,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 21285 states and 26100 transitions. [2020-10-13 09:45:28,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 09:45:28,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:28,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:28,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:45:28,281 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:28,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:28,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1191574066, now seen corresponding path program 1 times [2020-10-13 09:45:28,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:28,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653600523] [2020-10-13 09:45:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:28,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:29,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:29,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 09:45:29,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:45:29,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1384 [2020-10-13 09:45:29,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:45:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:45:29,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:29,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:29,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:29,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:29,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:29,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:45:29,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:29,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:29,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:30,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:30,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:45:30,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:30,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-13 09:45:30,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:30,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:30,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:30,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:45:30,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:30,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653600523] [2020-10-13 09:45:30,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:30,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:30,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792326499] [2020-10-13 09:45:30,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:30,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:30,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:30,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:30,202 INFO L87 Difference]: Start difference. First operand 21285 states and 26100 transitions. Second operand 5 states. [2020-10-13 09:45:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:38,103 INFO L93 Difference]: Finished difference Result 42594 states and 52309 transitions. [2020-10-13 09:45:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:38,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 09:45:38,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:38,182 INFO L225 Difference]: With dead ends: 42594 [2020-10-13 09:45:38,183 INFO L226 Difference]: Without dead ends: 21293 [2020-10-13 09:45:38,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21293 states. [2020-10-13 09:45:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21293 to 21285. [2020-10-13 09:45:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21285 states. [2020-10-13 09:45:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21285 states to 21285 states and 26092 transitions. [2020-10-13 09:45:38,727 INFO L78 Accepts]: Start accepts. Automaton has 21285 states and 26092 transitions. Word has length 177 [2020-10-13 09:45:38,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:38,728 INFO L479 AbstractCegarLoop]: Abstraction has 21285 states and 26092 transitions. [2020-10-13 09:45:38,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21285 states and 26092 transitions. [2020-10-13 09:45:38,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-13 09:45:38,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:38,745 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:38,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:45:38,746 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:38,747 INFO L82 PathProgramCache]: Analyzing trace with hash -146261341, now seen corresponding path program 1 times [2020-10-13 09:45:38,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:38,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372729721] [2020-10-13 09:45:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:42,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 09:45:42,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:45:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3253 [2020-10-13 09:45:42,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:45:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:45:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:45:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:42,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:42,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:42,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:42,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:42,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:45:42,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:42,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:42,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:42,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:45:42,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:45:42,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:45:42,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:42,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 09:45:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:42,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:42,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:42,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:45:42,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:42,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-13 09:45:42,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:45:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:45:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-13 09:45:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:45:43,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372729721] [2020-10-13 09:45:43,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:43,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:45:43,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458378018] [2020-10-13 09:45:43,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:45:43,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:43,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:45:43,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:45:43,585 INFO L87 Difference]: Start difference. First operand 21285 states and 26092 transitions. Second operand 10 states. [2020-10-13 09:45:44,325 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-13 09:45:44,927 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-13 09:45:45,963 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-13 09:45:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:57,420 INFO L93 Difference]: Finished difference Result 43378 states and 53569 transitions. [2020-10-13 09:45:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:45:57,422 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 258 [2020-10-13 09:45:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:57,497 INFO L225 Difference]: With dead ends: 43378 [2020-10-13 09:45:57,497 INFO L226 Difference]: Without dead ends: 21917 [2020-10-13 09:45:57,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:45:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21917 states. [2020-10-13 09:45:57,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21917 to 21340. [2020-10-13 09:45:57,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21340 states. [2020-10-13 09:45:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21340 states to 21340 states and 24150 transitions. [2020-10-13 09:45:57,932 INFO L78 Accepts]: Start accepts. Automaton has 21340 states and 24150 transitions. Word has length 258 [2020-10-13 09:45:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:57,933 INFO L479 AbstractCegarLoop]: Abstraction has 21340 states and 24150 transitions. [2020-10-13 09:45:57,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:45:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 21340 states and 24150 transitions. [2020-10-13 09:45:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 09:45:57,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:57,953 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:45:57,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:45:57,954 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:57,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1123264071, now seen corresponding path program 1 times [2020-10-13 09:45:57,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:57,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965319651] [2020-10-13 09:45:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:59,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:59,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:59,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 09:45:59,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:45:59,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1883 [2020-10-13 09:45:59,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:45:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:45:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:45:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:59,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:59,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:59,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:59,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:59,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:45:59,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:59,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:59,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:59,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:00,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:00,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:00,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:00,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 09:46:00,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:00,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 09:46:00,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:00,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:00,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 09:46:00,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:00,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 09:46:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:00,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:00,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:00,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:46:00,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:00,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:46:00,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 09:46:00,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 40 proven. 127 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:46:00,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965319651] [2020-10-13 09:46:00,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:00,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:46:00,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489530004] [2020-10-13 09:46:00,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:46:00,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:00,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:46:00,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:46:00,777 INFO L87 Difference]: Start difference. First operand 21340 states and 24150 transitions. Second operand 8 states. [2020-10-13 09:46:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:14,159 INFO L93 Difference]: Finished difference Result 42855 states and 48652 transitions. [2020-10-13 09:46:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:46:14,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 320 [2020-10-13 09:46:14,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:14,215 INFO L225 Difference]: With dead ends: 42855 [2020-10-13 09:46:14,215 INFO L226 Difference]: Without dead ends: 21521 [2020-10-13 09:46:14,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:46:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21521 states. [2020-10-13 09:46:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21521 to 19378. [2020-10-13 09:46:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19378 states. [2020-10-13 09:46:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19378 states to 19378 states and 20907 transitions. [2020-10-13 09:46:14,579 INFO L78 Accepts]: Start accepts. Automaton has 19378 states and 20907 transitions. Word has length 320 [2020-10-13 09:46:14,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:14,580 INFO L479 AbstractCegarLoop]: Abstraction has 19378 states and 20907 transitions. [2020-10-13 09:46:14,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:46:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 19378 states and 20907 transitions. [2020-10-13 09:46:14,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 09:46:14,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:14,591 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 09:46:14,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:46:14,592 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:14,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1920391677, now seen corresponding path program 1 times [2020-10-13 09:46:14,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:14,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456129139] [2020-10-13 09:46:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:14,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:16,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-13 09:46:16,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:46:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1708 [2020-10-13 09:46:16,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:46:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:46:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:46:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:16,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:16,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:16,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:16,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:46:16,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:16,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:16,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:16,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:16,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:46:16,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:16,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:46:16,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:16,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:46:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 09:46:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:16,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:16,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:16,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:46:16,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:16,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:46:16,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:16,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:16,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 09:46:16,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:16,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 09:46:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:16,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:16,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:16,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:46:16,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:16,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:46:16,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:16,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 09:46:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 60 proven. 132 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:46:17,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456129139] [2020-10-13 09:46:17,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:17,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:46:17,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092710724] [2020-10-13 09:46:17,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:46:17,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:17,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:46:17,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:46:17,082 INFO L87 Difference]: Start difference. First operand 19378 states and 20907 transitions. Second operand 7 states. [2020-10-13 09:46:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:28,410 INFO L93 Difference]: Finished difference Result 43256 states and 47244 transitions. [2020-10-13 09:46:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:46:28,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-13 09:46:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:28,466 INFO L225 Difference]: With dead ends: 43256 [2020-10-13 09:46:28,467 INFO L226 Difference]: Without dead ends: 23884 [2020-10-13 09:46:28,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:46:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23884 states. [2020-10-13 09:46:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23884 to 23787. [2020-10-13 09:46:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23787 states. [2020-10-13 09:46:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23787 states to 23787 states and 25458 transitions. [2020-10-13 09:46:28,995 INFO L78 Accepts]: Start accepts. Automaton has 23787 states and 25458 transitions. Word has length 332 [2020-10-13 09:46:28,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:28,995 INFO L479 AbstractCegarLoop]: Abstraction has 23787 states and 25458 transitions. [2020-10-13 09:46:28,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:46:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 23787 states and 25458 transitions. [2020-10-13 09:46:29,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-13 09:46:29,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:29,018 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:46:29,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:46:29,019 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:29,019 INFO L82 PathProgramCache]: Analyzing trace with hash 130756262, now seen corresponding path program 1 times [2020-10-13 09:46:29,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:29,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087486790] [2020-10-13 09:46:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:33,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:33,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-13 09:46:33,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:46:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4059 [2020-10-13 09:46:33,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:46:33,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:46:33,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:33,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:33,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:33,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:33,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:46:33,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:33,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:33,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:33,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:33,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:46:33,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:33,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:46:33,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:46:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:46:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:33,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:33,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:46:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:46:33,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:33,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:33,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:46:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:33,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:46:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:33,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:33,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:33,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:46:33,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:46:33,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:33,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:33,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 09:46:33,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:33,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 134 proven. 72 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:46:33,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087486790] [2020-10-13 09:46:33,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:33,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:46:33,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302217726] [2020-10-13 09:46:33,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:46:33,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:33,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:46:33,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:46:33,840 INFO L87 Difference]: Start difference. First operand 23787 states and 25458 transitions. Second operand 7 states. [2020-10-13 09:46:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:45,842 INFO L93 Difference]: Finished difference Result 56177 states and 60631 transitions. [2020-10-13 09:46:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:46:45,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-13 09:46:45,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:45,911 INFO L225 Difference]: With dead ends: 56177 [2020-10-13 09:46:45,911 INFO L226 Difference]: Without dead ends: 30980 [2020-10-13 09:46:45,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:46:45,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30980 states. [2020-10-13 09:46:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30980 to 29538. [2020-10-13 09:46:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29538 states. [2020-10-13 09:46:46,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29538 states to 29538 states and 31575 transitions. [2020-10-13 09:46:46,367 INFO L78 Accepts]: Start accepts. Automaton has 29538 states and 31575 transitions. Word has length 383 [2020-10-13 09:46:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:46,368 INFO L479 AbstractCegarLoop]: Abstraction has 29538 states and 31575 transitions. [2020-10-13 09:46:46,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:46:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 29538 states and 31575 transitions. [2020-10-13 09:46:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-13 09:46:46,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:46,396 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:46,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:46:46,396 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:46,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1207439830, now seen corresponding path program 1 times [2020-10-13 09:46:46,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:46,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494245545] [2020-10-13 09:46:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:46,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:48,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:51,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:51,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-13 09:46:51,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:46:51,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:46:51,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:46:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:46:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:46:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:51,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:51,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:51,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:46:51,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:46:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:51,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:51,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:51,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:46:51,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:51,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:46:51,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:46:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:46:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:46:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:51,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:51,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:46:51,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:51,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:46:51,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 09:46:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:51,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 09:46:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:51,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:51,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:46:51,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:46:51,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:46:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:51,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-10-13 09:46:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:52,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:52,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:46:52,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:46:52,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 09:46:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 80 proven. 236 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-13 09:46:52,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494245545] [2020-10-13 09:46:52,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:52,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:46:52,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695607985] [2020-10-13 09:46:52,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:46:52,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:52,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:46:52,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:46:52,430 INFO L87 Difference]: Start difference. First operand 29538 states and 31575 transitions. Second operand 7 states. [2020-10-13 09:47:01,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:01,754 INFO L93 Difference]: Finished difference Result 60746 states and 65018 transitions. [2020-10-13 09:47:01,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:47:01,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-13 09:47:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:01,995 INFO L225 Difference]: With dead ends: 60746 [2020-10-13 09:47:01,996 INFO L226 Difference]: Without dead ends: 31214 [2020-10-13 09:47:02,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:47:02,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31214 states. [2020-10-13 09:47:02,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31214 to 30435. [2020-10-13 09:47:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30435 states. [2020-10-13 09:47:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30435 states to 30435 states and 32584 transitions. [2020-10-13 09:47:02,462 INFO L78 Accepts]: Start accepts. Automaton has 30435 states and 32584 transitions. Word has length 459 [2020-10-13 09:47:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:02,463 INFO L479 AbstractCegarLoop]: Abstraction has 30435 states and 32584 transitions. [2020-10-13 09:47:02,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:47:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 30435 states and 32584 transitions. [2020-10-13 09:47:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-13 09:47:02,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:02,483 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:02,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:47:02,483 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:02,484 INFO L82 PathProgramCache]: Analyzing trace with hash -245801126, now seen corresponding path program 1 times [2020-10-13 09:47:02,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:02,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073889091] [2020-10-13 09:47:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:02,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:07,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:07,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-13 09:47:07,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:47:07,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 09:47:07,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:47:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:47:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:47:07,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:07,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:07,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:07,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:07,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:47:07,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:47:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:07,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:07,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:07,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:47:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:47:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:47:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:47:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:08,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:08,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:08,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:47:08,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:08,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:47:08,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:08,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-10-13 09:47:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:08,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-10-13 09:47:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:08,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:08,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:47:08,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:08,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:47:08,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 09:47:08,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:08,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 60 proven. 234 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-13 09:47:08,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073889091] [2020-10-13 09:47:08,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:08,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:47:08,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134371016] [2020-10-13 09:47:08,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:47:08,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:08,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:47:08,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:47:08,597 INFO L87 Difference]: Start difference. First operand 30435 states and 32584 transitions. Second operand 8 states. [2020-10-13 09:47:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:18,976 INFO L93 Difference]: Finished difference Result 70181 states and 75706 transitions. [2020-10-13 09:47:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:47:18,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 533 [2020-10-13 09:47:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:19,050 INFO L225 Difference]: With dead ends: 70181 [2020-10-13 09:47:19,050 INFO L226 Difference]: Without dead ends: 39752 [2020-10-13 09:47:19,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:47:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39752 states. [2020-10-13 09:47:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39752 to 34725. [2020-10-13 09:47:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34725 states. [2020-10-13 09:47:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34725 states to 34725 states and 37160 transitions. [2020-10-13 09:47:19,777 INFO L78 Accepts]: Start accepts. Automaton has 34725 states and 37160 transitions. Word has length 533 [2020-10-13 09:47:19,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:19,778 INFO L479 AbstractCegarLoop]: Abstraction has 34725 states and 37160 transitions. [2020-10-13 09:47:19,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:47:19,778 INFO L276 IsEmpty]: Start isEmpty. Operand 34725 states and 37160 transitions. [2020-10-13 09:47:19,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2020-10-13 09:47:19,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:19,802 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:19,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:47:19,802 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:19,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:19,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1922919451, now seen corresponding path program 1 times [2020-10-13 09:47:19,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:19,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481867354] [2020-10-13 09:47:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:19,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:24,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:24,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 804 [2020-10-13 09:47:24,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:47:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 09:47:24,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 411 [2020-10-13 09:47:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:47:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:47:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:47:25,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:47:25,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:47:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:47:25,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:47:25,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:47:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:47:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:47:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:47:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:47:25,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:47:25,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:47:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:47:25,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:47:25,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-13 09:47:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:47:25,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:47:25,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:47:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:47:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:47:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-13 09:47:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:47:25,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:47:25,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:47:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-10-13 09:47:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:25,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:25,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:47:25,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:47:25,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:47:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:47:25,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:47:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:47:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 09:47:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:47:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:47:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 293 proven. 174 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2020-10-13 09:47:25,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481867354] [2020-10-13 09:47:25,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:47:25,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:47:25,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898329840] [2020-10-13 09:47:25,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:47:25,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:47:25,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:47:25,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:47:25,899 INFO L87 Difference]: Start difference. First operand 34725 states and 37160 transitions. Second operand 7 states. [2020-10-13 09:47:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:47:35,519 INFO L93 Difference]: Finished difference Result 84448 states and 91175 transitions. [2020-10-13 09:47:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:47:35,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 784 [2020-10-13 09:47:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:47:35,605 INFO L225 Difference]: With dead ends: 84448 [2020-10-13 09:47:35,605 INFO L226 Difference]: Without dead ends: 49729 [2020-10-13 09:47:35,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:47:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49729 states. [2020-10-13 09:47:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49729 to 48940. [2020-10-13 09:47:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48940 states. [2020-10-13 09:47:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48940 states to 48940 states and 52509 transitions. [2020-10-13 09:47:36,339 INFO L78 Accepts]: Start accepts. Automaton has 48940 states and 52509 transitions. Word has length 784 [2020-10-13 09:47:36,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:47:36,340 INFO L479 AbstractCegarLoop]: Abstraction has 48940 states and 52509 transitions. [2020-10-13 09:47:36,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:47:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 48940 states and 52509 transitions. [2020-10-13 09:47:36,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-10-13 09:47:36,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:47:36,368 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:47:36,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:47:36,369 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:47:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:47:36,370 INFO L82 PathProgramCache]: Analyzing trace with hash 45682692, now seen corresponding path program 1 times [2020-10-13 09:47:36,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:47:36,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859357298] [2020-10-13 09:47:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:47:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:47:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:47:36,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking...