/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:15:59,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:15:59,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:15:59,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:15:59,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:15:59,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:15:59,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:15:59,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:15:59,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:15:59,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:15:59,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:15:59,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:15:59,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:15:59,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:15:59,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:15:59,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:15:59,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:15:59,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:15:59,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:15:59,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:15:59,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:15:59,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:15:59,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:15:59,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:15:59,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:15:59,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:15:59,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:15:59,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:15:59,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:15:59,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:15:59,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:15:59,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:15:59,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:15:59,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:15:59,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:15:59,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:15:59,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:15:59,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:15:59,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:15:59,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:15:59,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:15:59,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:15:59,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:15:59,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:15:59,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:15:59,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:15:59,688 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:15:59,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:15:59,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:15:59,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:15:59,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:15:59,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:15:59,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:15:59,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:15:59,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:15:59,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:15:59,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:15:59,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:15:59,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:15:59,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:15:59,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:15:59,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:15:59,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:15:59,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:15:59,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:15:59,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:15:59,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:15:59,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:15:59,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:15:59,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:15:59,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:15:59,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:15:59,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:15:59,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:16:00,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:16:00,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:16:00,003 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:16:00,004 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2020-10-12 11:16:00,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4158f39b3/a24e0dd151d64fbba90f4a33c5884316/FLAG4afa5ab09 [2020-10-12 11:16:00,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:16:00,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label00.c [2020-10-12 11:16:00,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4158f39b3/a24e0dd151d64fbba90f4a33c5884316/FLAG4afa5ab09 [2020-10-12 11:16:00,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4158f39b3/a24e0dd151d64fbba90f4a33c5884316 [2020-10-12 11:16:00,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:16:00,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:16:00,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:16:00,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:16:00,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:16:00,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:16:00" (1/1) ... [2020-10-12 11:16:00,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecc4458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:00, skipping insertion in model container [2020-10-12 11:16:00,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:16:00" (1/1) ... [2020-10-12 11:16:00,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:16:00,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:16:01,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:16:01,775 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:16:02,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:16:02,094 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:16:02,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02 WrapperNode [2020-10-12 11:16:02,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:16:02,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:16:02,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:16:02,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:16:02,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02" (1/1) ... [2020-10-12 11:16:02,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02" (1/1) ... [2020-10-12 11:16:02,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02" (1/1) ... [2020-10-12 11:16:02,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02" (1/1) ... [2020-10-12 11:16:02,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02" (1/1) ... [2020-10-12 11:16:02,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02" (1/1) ... [2020-10-12 11:16:02,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02" (1/1) ... [2020-10-12 11:16:02,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:16:02,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:16:02,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:16:02,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:16:02,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02" (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 [2020-10-12 11:16:02,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:16:02,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:16:02,372 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:16:02,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:16:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:16:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:16:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:16:02,373 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:16:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:16:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:16:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:16:04,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:16:04,253 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:16:04,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:16:04 BoogieIcfgContainer [2020-10-12 11:16:04,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:16:04,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:16:04,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:16:04,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:16:04,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:16:00" (1/3) ... [2020-10-12 11:16:04,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adca977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:16:04, skipping insertion in model container [2020-10-12 11:16:04,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:02" (2/3) ... [2020-10-12 11:16:04,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adca977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:16:04, skipping insertion in model container [2020-10-12 11:16:04,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:16:04" (3/3) ... [2020-10-12 11:16:04,270 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label00.c [2020-10-12 11:16:04,282 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:16:04,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:16:04,305 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:16:04,335 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:16:04,335 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:16:04,336 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:16:04,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:16:04,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:16:04,336 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:16:04,336 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:16:04,336 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:16:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:16:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-12 11:16:04,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:16:04,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:16:04,384 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:16:04,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:16:04,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1862638405, now seen corresponding path program 1 times [2020-10-12 11:16:04,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:16:04,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344254326] [2020-10-12 11:16:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:16:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:05,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:05,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:09,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:09,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 11:16:09,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:16:09,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4215 [2020-10-12 11:16:09,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:16:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:16:09,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:16:09,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:16:09,851 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-12 11:16:10,727 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:16:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:16:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:10,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:10,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:10,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:16:10,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:10,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:16:10,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:10,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:16:10,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:10,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:16:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:16:11,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344254326] [2020-10-12 11:16:11,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:16:11,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 11:16:11,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681159858] [2020-10-12 11:16:11,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:16:11,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:16:11,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:16:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:16:11,309 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-12 11:16:11,754 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 11:16:12,657 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 180 [2020-10-12 11:16:13,423 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 180 [2020-10-12 11:16:14,333 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 190 [2020-10-12 11:16:15,537 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 239 DAG size of output: 189 [2020-10-12 11:16:17,022 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 239 DAG size of output: 188 [2020-10-12 11:16:18,546 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 239 DAG size of output: 187 [2020-10-12 11:16:21,643 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 240 DAG size of output: 186 [2020-10-12 11:16:22,684 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 184 [2020-10-12 11:16:25,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:16:25,063 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:16:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:16:25,067 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 198 [2020-10-12 11:16:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:16:25,087 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:16:25,087 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:16:25,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:16:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:16:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:16:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:16:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:16:25,176 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 198 [2020-10-12 11:16:25,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:16:25,177 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:16:25,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:16:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:16:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 11:16:25,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:16:25,184 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:16:25,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:16:25,184 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:16:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:16:25,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1091301566, now seen corresponding path program 1 times [2020-10-12 11:16:25,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:16:25,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911018363] [2020-10-12 11:16:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:16:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:25,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:30,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:30,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-12 11:16:30,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:16:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-12 11:16:30,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:30,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:16:30,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:16:30,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:16:30,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:31,994 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2020-10-12 11:16:32,313 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2020-10-12 11:16:32,659 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 87 [2020-10-12 11:16:32,977 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2020-10-12 11:16:33,266 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 63 [2020-10-12 11:16:33,486 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2020-10-12 11:16:33,643 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:16:33,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:16:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:33,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:33,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:33,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:16:33,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:33,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:16:33,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:16:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:16:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:33,911 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:16:33,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:16:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:33,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:33,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:16:33,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:33,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 11:16:33,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:16:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:16:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:16:33,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:34,214 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-12 11:16:34,467 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-10-12 11:16:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:16:35,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911018363] [2020-10-12 11:16:35,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:16:35,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 11:16:35,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132905115] [2020-10-12 11:16:35,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:16:35,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:16:35,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:16:35,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:16:35,045 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 17 states. [2020-10-12 11:16:35,311 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 11:16:36,042 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 86 [2020-10-12 11:16:36,429 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2020-10-12 11:16:36,906 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 92 [2020-10-12 11:16:37,560 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 177 [2020-10-12 11:16:38,330 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 197 [2020-10-12 11:16:39,329 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 194 [2020-10-12 11:16:40,023 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 11:16:41,723 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 259 DAG size of output: 191 [2020-10-12 11:16:44,296 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 260 DAG size of output: 188 [2020-10-12 11:16:47,300 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 185 [2020-10-12 11:16:48,258 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 180 [2020-10-12 11:16:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:16:50,380 INFO L93 Difference]: Finished difference Result 758 states and 1214 transitions. [2020-10-12 11:16:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 11:16:50,383 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 209 [2020-10-12 11:16:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:16:50,389 INFO L225 Difference]: With dead ends: 758 [2020-10-12 11:16:50,389 INFO L226 Difference]: Without dead ends: 515 [2020-10-12 11:16:50,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2020-10-12 11:16:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-12 11:16:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 509. [2020-10-12 11:16:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 11:16:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-12 11:16:50,430 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 209 [2020-10-12 11:16:50,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:16:50,431 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-12 11:16:50,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:16:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-12 11:16:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-12 11:16:50,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:16:50,436 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:16:50,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:16:50,436 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:16:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:16:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash 74854410, now seen corresponding path program 1 times [2020-10-12 11:16:50,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:16:50,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542610630] [2020-10-12 11:16:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:16:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:50,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:51,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:51,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:51,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-12 11:16:51,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:16:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1232 [2020-10-12 11:16:51,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:16:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:16:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-12 11:16:51,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:16:52,011 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:16:52,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:16:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:52,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:52,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:16:52,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:16:52,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:16:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:16:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:16:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:52,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:52,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:16:52,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:16:52,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:16:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:16:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:16:52,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542610630] [2020-10-12 11:16:52,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:16:52,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:16:52,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474559966] [2020-10-12 11:16:52,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:16:52,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:16:52,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:16:52,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:16:52,230 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 5 states. [2020-10-12 11:16:52,520 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:16:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:16:54,845 INFO L93 Difference]: Finished difference Result 990 states and 1472 transitions. [2020-10-12 11:16:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:16:54,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-12 11:16:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:16:54,853 INFO L225 Difference]: With dead ends: 990 [2020-10-12 11:16:54,853 INFO L226 Difference]: Without dead ends: 747 [2020-10-12 11:16:54,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:16:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-12 11:16:54,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 733. [2020-10-12 11:16:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-12 11:16:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1022 transitions. [2020-10-12 11:16:54,905 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1022 transitions. Word has length 219 [2020-10-12 11:16:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:16:54,906 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 1022 transitions. [2020-10-12 11:16:54,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:16:54,906 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1022 transitions. [2020-10-12 11:16:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-12 11:16:54,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:16:54,911 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:16:54,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:16:54,911 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:16:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:16:54,912 INFO L82 PathProgramCache]: Analyzing trace with hash 515626906, now seen corresponding path program 1 times [2020-10-12 11:16:54,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:16:54,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671370112] [2020-10-12 11:16:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:16:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:54,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:56,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:56,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-12 11:16:56,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:16:56,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1199 [2020-10-12 11:16:56,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:16:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:16:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 11:16:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:56,339 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:16:56,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:16:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:56,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:56,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:16:56,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:56,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:16:56,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:16:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:16:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:16:56,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:16:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:56,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:56,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:16:56,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:56,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 11:16:56,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:16:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:16:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:16:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:16:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:56,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:56,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:56,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:16:56,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 11:16:56,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:56,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:16:56,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:16:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:16:56,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:16:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 11:16:56,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671370112] [2020-10-12 11:16:56,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:16:56,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:16:56,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982195585] [2020-10-12 11:16:56,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:16:56,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:16:56,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:16:56,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:16:56,786 INFO L87 Difference]: Start difference. First operand 733 states and 1022 transitions. Second operand 7 states. [2020-10-12 11:16:57,209 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:16:58,112 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:17:01,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:01,936 INFO L93 Difference]: Finished difference Result 2120 states and 3382 transitions. [2020-10-12 11:17:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:17:01,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-12 11:17:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:01,953 INFO L225 Difference]: With dead ends: 2120 [2020-10-12 11:17:01,953 INFO L226 Difference]: Without dead ends: 1653 [2020-10-12 11:17:01,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:17:01,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-10-12 11:17:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1619. [2020-10-12 11:17:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-10-12 11:17:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2337 transitions. [2020-10-12 11:17:02,025 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2337 transitions. Word has length 229 [2020-10-12 11:17:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:02,026 INFO L479 AbstractCegarLoop]: Abstraction has 1619 states and 2337 transitions. [2020-10-12 11:17:02,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:17:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2337 transitions. [2020-10-12 11:17:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 11:17:02,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:02,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:02,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:17:02,035 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:02,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1301222957, now seen corresponding path program 1 times [2020-10-12 11:17:02,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:02,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915291123] [2020-10-12 11:17:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:02,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:02,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:03,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:05,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:05,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 11:17:05,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3211 [2020-10-12 11:17:05,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:17:05,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:05,527 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:05,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:05,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:05,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:05,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:05,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:05,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:17:05,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:05,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:05,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:05,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:05,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:05,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:05,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:05,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 11:17:05,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:05,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:05,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:05,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:05,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:05,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:17:05,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:05,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 11:17:05,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:05,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:05,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:17:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:17:06,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915291123] [2020-10-12 11:17:06,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:06,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:17:06,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437216238] [2020-10-12 11:17:06,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:17:06,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:06,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:17:06,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:17:06,016 INFO L87 Difference]: Start difference. First operand 1619 states and 2337 transitions. Second operand 7 states. [2020-10-12 11:17:06,150 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:17:08,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:08,038 INFO L93 Difference]: Finished difference Result 2934 states and 4362 transitions. [2020-10-12 11:17:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:17:08,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-12 11:17:08,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:08,049 INFO L225 Difference]: With dead ends: 2934 [2020-10-12 11:17:08,050 INFO L226 Difference]: Without dead ends: 1589 [2020-10-12 11:17:08,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:17:08,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-10-12 11:17:08,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1587. [2020-10-12 11:17:08,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-10-12 11:17:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2219 transitions. [2020-10-12 11:17:08,113 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2219 transitions. Word has length 236 [2020-10-12 11:17:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:08,115 INFO L479 AbstractCegarLoop]: Abstraction has 1587 states and 2219 transitions. [2020-10-12 11:17:08,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:17:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2219 transitions. [2020-10-12 11:17:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-12 11:17:08,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:08,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:08,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:17:08,123 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:08,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:08,123 INFO L82 PathProgramCache]: Analyzing trace with hash 896019185, now seen corresponding path program 1 times [2020-10-12 11:17:08,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:08,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342371588] [2020-10-12 11:17:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:08,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:08,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:12,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:12,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-12 11:17:12,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:17:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4221 [2020-10-12 11:17:12,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:17:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 11:17:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-12 11:17:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:12,633 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:12,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:12,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:12,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:12,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:17:12,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:12,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:12,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:12,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:12,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:12,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:12,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:17:12,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:12,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:12,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:17:12,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:17:12,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 11:17:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:17:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:12,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:12,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:17:12,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:12,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:17:12,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:12,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:12,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:12,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:17:12,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:17:12,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342371588] [2020-10-12 11:17:12,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:12,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:17:12,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66362798] [2020-10-12 11:17:12,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:17:12,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:12,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:17:12,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:17:12,958 INFO L87 Difference]: Start difference. First operand 1587 states and 2219 transitions. Second operand 6 states. [2020-10-12 11:17:13,207 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:15,828 INFO L93 Difference]: Finished difference Result 4275 states and 6548 transitions. [2020-10-12 11:17:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:17:15,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2020-10-12 11:17:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:15,852 INFO L225 Difference]: With dead ends: 4275 [2020-10-12 11:17:15,852 INFO L226 Difference]: Without dead ends: 2954 [2020-10-12 11:17:15,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:15,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-10-12 11:17:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2891. [2020-10-12 11:17:15,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2891 states. [2020-10-12 11:17:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 4171 transitions. [2020-10-12 11:17:15,961 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 4171 transitions. Word has length 239 [2020-10-12 11:17:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:15,961 INFO L479 AbstractCegarLoop]: Abstraction has 2891 states and 4171 transitions. [2020-10-12 11:17:15,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:17:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 4171 transitions. [2020-10-12 11:17:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-12 11:17:15,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:15,973 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:15,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:17:15,974 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:15,974 INFO L82 PathProgramCache]: Analyzing trace with hash 2127969166, now seen corresponding path program 1 times [2020-10-12 11:17:15,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:15,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369147107] [2020-10-12 11:17:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:16,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:16,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:19,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:19,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 11:17:19,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:17:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3711 [2020-10-12 11:17:19,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:17:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:19,975 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:19,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:19,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:19,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:19,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:17:19,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:20,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:20,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:20,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:20,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:20,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:17:20,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:20,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:20,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:20,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:17:20,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:20,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 11:17:20,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:17:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 61 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:17:20,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369147107] [2020-10-12 11:17:20,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:20,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:17:20,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551782633] [2020-10-12 11:17:20,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:17:20,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:20,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:17:20,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:20,486 INFO L87 Difference]: Start difference. First operand 2891 states and 4171 transitions. Second operand 8 states. [2020-10-12 11:17:20,659 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:17:22,109 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:17:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:23,460 INFO L93 Difference]: Finished difference Result 8277 states and 13024 transitions. [2020-10-12 11:17:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:17:23,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 264 [2020-10-12 11:17:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:23,493 INFO L225 Difference]: With dead ends: 8277 [2020-10-12 11:17:23,493 INFO L226 Difference]: Without dead ends: 5664 [2020-10-12 11:17:23,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:17:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2020-10-12 11:17:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 5567. [2020-10-12 11:17:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5567 states. [2020-10-12 11:17:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5567 states to 5567 states and 8328 transitions. [2020-10-12 11:17:23,687 INFO L78 Accepts]: Start accepts. Automaton has 5567 states and 8328 transitions. Word has length 264 [2020-10-12 11:17:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:23,687 INFO L479 AbstractCegarLoop]: Abstraction has 5567 states and 8328 transitions. [2020-10-12 11:17:23,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:17:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5567 states and 8328 transitions. [2020-10-12 11:17:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-12 11:17:23,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:23,716 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1] [2020-10-12 11:17:23,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:17:23,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2036326587, now seen corresponding path program 1 times [2020-10-12 11:17:23,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:23,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423290913] [2020-10-12 11:17:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:23,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:27,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:28,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:28,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:28,953 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:28,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:28,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:28,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:28,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:28,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:17:28,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:28,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:29,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:29,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:29,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 11:17:29,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:29,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:29,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:29,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:29,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:17:29,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:29,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:17:29,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:17:29,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 11:17:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:29,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:29,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:17:29,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:29,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:17:29,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:29,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:17:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:17:29,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423290913] [2020-10-12 11:17:29,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:29,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:17:29,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119911044] [2020-10-12 11:17:29,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:17:29,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:29,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:17:29,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:29,460 INFO L87 Difference]: Start difference. First operand 5567 states and 8328 transitions. Second operand 8 states. [2020-10-12 11:17:29,595 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:32,459 INFO L93 Difference]: Finished difference Result 14601 states and 23292 transitions. [2020-10-12 11:17:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:17:32,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 273 [2020-10-12 11:17:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:32,524 INFO L225 Difference]: With dead ends: 14601 [2020-10-12 11:17:32,524 INFO L226 Difference]: Without dead ends: 11052 [2020-10-12 11:17:32,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:17:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11052 states. [2020-10-12 11:17:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11052 to 10875. [2020-10-12 11:17:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10875 states. [2020-10-12 11:17:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10875 states to 10875 states and 16550 transitions. [2020-10-12 11:17:32,925 INFO L78 Accepts]: Start accepts. Automaton has 10875 states and 16550 transitions. Word has length 273 [2020-10-12 11:17:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:32,925 INFO L479 AbstractCegarLoop]: Abstraction has 10875 states and 16550 transitions. [2020-10-12 11:17:32,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:17:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 10875 states and 16550 transitions. [2020-10-12 11:17:32,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-12 11:17:32,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:32,966 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:32,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:17:32,967 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:32,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:32,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2118689236, now seen corresponding path program 1 times [2020-10-12 11:17:32,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:32,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80027372] [2020-10-12 11:17:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:35,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:35,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-12 11:17:35,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:35,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2219 [2020-10-12 11:17:35,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:17:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-12 11:17:35,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:35,571 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:35,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:35,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:35,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:35,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:17:35,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:35,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:35,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:35,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:35,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 11:17:35,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:35,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:35,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:17:35,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:35,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 11:17:35,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:17:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:17:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:17:36,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80027372] [2020-10-12 11:17:36,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:36,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:17:36,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23099032] [2020-10-12 11:17:36,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:17:36,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:36,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:17:36,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:17:36,237 INFO L87 Difference]: Start difference. First operand 10875 states and 16550 transitions. Second operand 9 states. [2020-10-12 11:17:36,390 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:17:37,678 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 11:17:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:41,088 INFO L93 Difference]: Finished difference Result 29344 states and 48111 transitions. [2020-10-12 11:17:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:17:41,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 277 [2020-10-12 11:17:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:41,193 INFO L225 Difference]: With dead ends: 29344 [2020-10-12 11:17:41,194 INFO L226 Difference]: Without dead ends: 22174 [2020-10-12 11:17:41,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:17:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22174 states. [2020-10-12 11:17:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22174 to 21796. [2020-10-12 11:17:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21796 states. [2020-10-12 11:17:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21796 states to 21796 states and 33306 transitions. [2020-10-12 11:17:41,965 INFO L78 Accepts]: Start accepts. Automaton has 21796 states and 33306 transitions. Word has length 277 [2020-10-12 11:17:41,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:41,966 INFO L479 AbstractCegarLoop]: Abstraction has 21796 states and 33306 transitions. [2020-10-12 11:17:41,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:17:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 21796 states and 33306 transitions. [2020-10-12 11:17:42,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-12 11:17:42,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:42,052 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:42,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:17:42,052 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:42,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:42,053 INFO L82 PathProgramCache]: Analyzing trace with hash -955125870, now seen corresponding path program 1 times [2020-10-12 11:17:42,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:42,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428733483] [2020-10-12 11:17:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:42,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:45,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:47,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:47,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-12 11:17:47,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:17:47,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 11:17:47,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 11:17:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-12 11:17:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:48,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:48,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:17:48,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:48,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:48,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:48,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 11:17:48,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:17:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:48,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:48,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:48,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:17:48,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:48,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 11:17:48,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:48,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:17:48,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 11:17:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 11:17:49,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:49,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 11:17:49,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:17:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 11:17:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:49,559 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-12 11:17:49,925 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2020-10-12 11:17:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:17:50,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428733483] [2020-10-12 11:17:50,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:50,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:17:50,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255865966] [2020-10-12 11:17:50,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 11:17:50,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:50,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 11:17:50,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:17:50,844 INFO L87 Difference]: Start difference. First operand 21796 states and 33306 transitions. Second operand 20 states. [2020-10-12 11:17:51,114 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 11:17:52,114 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 141 [2020-10-12 11:17:52,485 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-12 11:17:53,394 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 55 [2020-10-12 11:17:54,582 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-12 11:17:55,488 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2020-10-12 11:17:55,761 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 46 [2020-10-12 11:17:56,119 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 139 [2020-10-12 11:17:56,739 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 80 [2020-10-12 11:17:57,018 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 48 [2020-10-12 11:17:57,496 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 73 [2020-10-12 11:17:58,054 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 85 [2020-10-12 11:17:58,843 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 169 [2020-10-12 11:17:59,687 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 177 [2020-10-12 11:18:01,464 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 92 [2020-10-12 11:18:02,545 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 259 DAG size of output: 176 [2020-10-12 11:18:02,917 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-10-12 11:18:04,098 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 259 DAG size of output: 175 [2020-10-12 11:18:05,006 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2020-10-12 11:18:05,501 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 71 [2020-10-12 11:18:07,693 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 77 [2020-10-12 11:18:08,094 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 62 [2020-10-12 11:18:08,611 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 74 [2020-10-12 11:18:09,347 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 167 [2020-10-12 11:18:10,155 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 175 [2020-10-12 11:18:10,456 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-10-12 11:18:11,288 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 66 [2020-10-12 11:18:12,018 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 87 [2020-10-12 11:18:13,162 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 260 DAG size of output: 174 [2020-10-12 11:18:13,418 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-12 11:18:13,818 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 78 [2020-10-12 11:18:14,407 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 81 [2020-10-12 11:18:14,926 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 69 [2020-10-12 11:18:15,521 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-10-12 11:18:16,094 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 89 [2020-10-12 11:18:17,060 WARN L193 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 174 [2020-10-12 11:18:18,206 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 173 [2020-10-12 11:18:19,253 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-10-12 11:18:20,283 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 173 [2020-10-12 11:18:20,617 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-12 11:18:21,453 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 167 [2020-10-12 11:18:22,189 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 175 [2020-10-12 11:18:23,722 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 89 [2020-10-12 11:18:24,659 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 174 [2020-10-12 11:18:25,804 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 173 [2020-10-12 11:18:27,039 WARN L193 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 172 [2020-10-12 11:18:28,397 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 171 [2020-10-12 11:18:29,047 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 86 [2020-10-12 11:18:30,633 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 171 [2020-10-12 11:18:31,851 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 87 [2020-10-12 11:18:32,826 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 172 [2020-10-12 11:18:34,417 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 171 [2020-10-12 11:18:35,267 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 169 [2020-10-12 11:18:35,758 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 83 [2020-10-12 11:18:36,933 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 169 [2020-10-12 11:18:37,494 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 83 [2020-10-12 11:18:38,161 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:18:38,447 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 64 [2020-10-12 11:18:38,664 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 54 [2020-10-12 11:18:39,143 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 147 [2020-10-12 11:18:39,684 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-12 11:18:41,272 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 67 [2020-10-12 11:18:43,235 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 105 [2020-10-12 11:18:43,622 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 145 [2020-10-12 11:18:44,303 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2020-10-12 11:18:44,964 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2020-10-12 11:18:46,422 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-12 11:18:48,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:48,775 INFO L93 Difference]: Finished difference Result 75306 states and 127073 transitions. [2020-10-12 11:18:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-12 11:18:48,776 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 280 [2020-10-12 11:18:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:48,978 INFO L225 Difference]: With dead ends: 75306 [2020-10-12 11:18:48,978 INFO L226 Difference]: Without dead ends: 53788 [2020-10-12 11:18:49,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2840 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=2042, Invalid=6700, Unknown=0, NotChecked=0, Total=8742 [2020-10-12 11:18:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53788 states. [2020-10-12 11:18:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53788 to 50269. [2020-10-12 11:18:50,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50269 states. [2020-10-12 11:18:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50269 states to 50269 states and 79571 transitions. [2020-10-12 11:18:50,614 INFO L78 Accepts]: Start accepts. Automaton has 50269 states and 79571 transitions. Word has length 280 [2020-10-12 11:18:50,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:50,614 INFO L479 AbstractCegarLoop]: Abstraction has 50269 states and 79571 transitions. [2020-10-12 11:18:50,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 11:18:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 50269 states and 79571 transitions. [2020-10-12 11:18:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-12 11:18:50,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:50,727 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:50,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:18:50,728 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:50,728 INFO L82 PathProgramCache]: Analyzing trace with hash -392724494, now seen corresponding path program 1 times [2020-10-12 11:18:50,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:50,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340355443] [2020-10-12 11:18:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:55,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:55,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-12 11:18:55,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:18:55,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 11:18:55,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:18:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-10-12 11:18:55,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:56,557 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-12 11:18:56,809 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2020-10-12 11:18:57,077 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2020-10-12 11:18:57,366 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2020-10-12 11:18:57,594 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2020-10-12 11:18:57,806 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-10-12 11:18:57,984 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-10-12 11:18:58,144 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:58,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:58,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:58,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:58,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:58,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:58,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:18:58,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:58,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:58,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:58,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:58,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:18:58,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:18:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:58,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:18:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:58,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:58,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 11:18:58,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:18:58,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:18:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 11:18:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 11:18:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:58,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:58,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:18:58,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 11:18:58,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:18:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:58,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 11:18:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:58,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:58,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:58,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 11:18:58,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 11:18:58,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:18:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 11:18:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:59,010 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-12 11:18:59,296 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-12 11:19:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 117 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 11:19:00,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340355443] [2020-10-12 11:19:00,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:00,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 11:19:00,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103813086] [2020-10-12 11:19:00,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 11:19:00,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:00,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 11:19:00,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:19:00,067 INFO L87 Difference]: Start difference. First operand 50269 states and 79571 transitions. Second operand 22 states. [2020-10-12 11:19:00,423 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2020-10-12 11:19:00,976 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-12 11:19:01,170 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-10-12 11:19:01,599 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 11:19:01,920 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-12 11:19:02,312 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-12 11:19:02,535 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 36 [2020-10-12 11:19:03,773 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-12 11:19:03,989 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-12 11:19:04,323 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-12 11:19:04,497 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-12 11:19:05,981 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-12 11:19:06,279 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2020-10-12 11:19:07,216 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 135 [2020-10-12 11:19:08,103 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:19:09,246 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-12 11:19:09,665 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-12 11:19:10,127 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 59 [2020-10-12 11:19:10,865 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2020-10-12 11:19:11,651 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2020-10-12 11:19:12,035 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 11:19:13,198 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-12 11:19:13,738 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2020-10-12 11:19:14,766 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 148 [2020-10-12 11:19:15,105 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2020-10-12 11:19:15,895 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 180 [2020-10-12 11:19:16,703 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 200 [2020-10-12 11:19:17,339 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-12 11:19:17,736 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-12 11:19:18,124 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-12 11:19:18,573 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-12 11:19:19,156 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-12 11:19:20,012 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-10-12 11:19:20,456 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-10-12 11:19:20,792 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2020-10-12 11:19:22,294 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 206 DAG size of output: 197 [2020-10-12 11:19:22,829 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 104 [2020-10-12 11:19:23,203 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-10-12 11:19:24,241 WARN L193 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 194 [2020-10-12 11:19:27,159 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-12 11:19:28,107 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-12 11:19:28,708 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-10-12 11:19:30,100 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-10-12 11:19:30,543 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-12 11:19:32,553 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 206 DAG size of output: 191 [2020-10-12 11:19:33,301 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 98 [2020-10-12 11:19:33,708 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 135 [2020-10-12 11:19:35,166 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-12 11:19:35,874 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76