/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/byte_add_2-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:27:59,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:27:59,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:27:59,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:27:59,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:27:59,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:27:59,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:27:59,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:27:59,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:27:59,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:27:59,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:27:59,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:27:59,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:27:59,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:27:59,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:27:59,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:27:59,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:27:59,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:27:59,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:27:59,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:27:59,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:27:59,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:27:59,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:27:59,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:27:59,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:27:59,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:27:59,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:27:59,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:27:59,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:27:59,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:27:59,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:27:59,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:27:59,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:27:59,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:27:59,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:27:59,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:27:59,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:27:59,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:27:59,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:27:59,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:27:59,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:27:59,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 05:27:59,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:27:59,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:27:59,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:27:59,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:27:59,636 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:27:59,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:27:59,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:27:59,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:27:59,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:27:59,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:27:59,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:27:59,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:27:59,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:27:59,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:27:59,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:27:59,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:27:59,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:27:59,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:27:59,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:27:59,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:27:59,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:27:59,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:27:59,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:27:59,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:27:59,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:27:59,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:27:59,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:27:59,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:27:59,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:27:59,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:27:59,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:27:59,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:27:59,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:27:59,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:27:59,960 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:27:59,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_2-2.i [2020-10-13 05:28:00,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5df8093a4/0a16c9feb4c64af4afd663aa3a0c140e/FLAG14c0a1c0d [2020-10-13 05:28:00,480 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:28:00,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add_2-2.i [2020-10-13 05:28:00,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5df8093a4/0a16c9feb4c64af4afd663aa3a0c140e/FLAG14c0a1c0d [2020-10-13 05:28:00,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5df8093a4/0a16c9feb4c64af4afd663aa3a0c140e [2020-10-13 05:28:00,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:28:00,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:28:00,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:28:00,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:28:00,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:28:00,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:28:00" (1/1) ... [2020-10-13 05:28:00,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eef8159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:00, skipping insertion in model container [2020-10-13 05:28:00,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:28:00" (1/1) ... [2020-10-13 05:28:00,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:28:00,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:28:01,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:28:01,163 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:28:01,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:28:01,316 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:28:01,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01 WrapperNode [2020-10-13 05:28:01,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:28:01,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:28:01,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:28:01,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:28:01,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... [2020-10-13 05:28:01,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:28:01,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:28:01,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:28:01,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:28:01,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:28:01,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:28:01,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:28:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:28:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-13 05:28:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:28:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:28:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 05:28:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:28:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-13 05:28:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-13 05:28:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-13 05:28:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-13 05:28:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:28:01,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:28:01,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:28:02,013 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:28:02,013 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:28:02,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:28:02 BoogieIcfgContainer [2020-10-13 05:28:02,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:28:02,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:28:02,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:28:02,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:28:02,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:28:00" (1/3) ... [2020-10-13 05:28:02,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d429c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:28:02, skipping insertion in model container [2020-10-13 05:28:02,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:01" (2/3) ... [2020-10-13 05:28:02,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d429c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:28:02, skipping insertion in model container [2020-10-13 05:28:02,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:28:02" (3/3) ... [2020-10-13 05:28:02,025 INFO L109 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2020-10-13 05:28:02,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:28:02,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:28:02,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:28:02,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:28:02,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:28:02,081 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:28:02,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:28:02,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:28:02,082 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:28:02,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:28:02,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:28:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-13 05:28:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:28:02,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:02,111 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] [2020-10-13 05:28:02,112 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:02,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:02,118 INFO L82 PathProgramCache]: Analyzing trace with hash 397916932, now seen corresponding path program 1 times [2020-10-13 05:28:02,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:02,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430759448] [2020-10-13 05:28:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:02,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:28:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:28:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-13 05:28:02,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 05:28:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:02,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 05:28:02,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:02,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:02,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:02,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:02,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:02,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:02,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:02,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:02,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 05:28:02,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:28:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 05:28:02,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:28:02,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:02,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:02,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430759448] [2020-10-13 05:28:02,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:02,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-13 05:28:02,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217778516] [2020-10-13 05:28:02,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-13 05:28:02,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:02,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-13 05:28:02,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 05:28:02,639 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-13 05:28:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:02,668 INFO L93 Difference]: Finished difference Result 76 states and 112 transitions. [2020-10-13 05:28:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-13 05:28:02,669 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-10-13 05:28:02,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:02,680 INFO L225 Difference]: With dead ends: 76 [2020-10-13 05:28:02,681 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 05:28:02,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 05:28:02,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 05:28:02,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-13 05:28:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 05:28:02,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2020-10-13 05:28:02,732 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 73 transitions. Word has length 21 [2020-10-13 05:28:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:02,732 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 73 transitions. [2020-10-13 05:28:02,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-13 05:28:02,733 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 73 transitions. [2020-10-13 05:28:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:28:02,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:02,734 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] [2020-10-13 05:28:02,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:28:02,735 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:02,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1531564698, now seen corresponding path program 1 times [2020-10-13 05:28:02,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:02,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170979057] [2020-10-13 05:28:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:03,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:28:03,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:28:03,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-13 05:28:03,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:03,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 05:28:03,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 05:28:03,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:03,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:03,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:03,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:03,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:03,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:03,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:03,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:03,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:03,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:03,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:03,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 05:28:03,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:28:03,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 05:28:03,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:03,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:03,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:28:03,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 05:28:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:03,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170979057] [2020-10-13 05:28:03,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:03,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:28:03,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368277724] [2020-10-13 05:28:03,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:28:03,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:03,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:28:03,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:28:03,397 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. Second operand 3 states. [2020-10-13 05:28:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:03,675 INFO L93 Difference]: Finished difference Result 102 states and 169 transitions. [2020-10-13 05:28:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:28:03,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 05:28:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:03,680 INFO L225 Difference]: With dead ends: 102 [2020-10-13 05:28:03,680 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 05:28:03,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:28:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 05:28:03,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-13 05:28:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-13 05:28:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 98 transitions. [2020-10-13 05:28:03,706 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 98 transitions. Word has length 21 [2020-10-13 05:28:03,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:03,707 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 98 transitions. [2020-10-13 05:28:03,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:28:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2020-10-13 05:28:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 05:28:03,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:03,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:03,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:28:03,710 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1473767205, now seen corresponding path program 1 times [2020-10-13 05:28:03,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:03,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776938917] [2020-10-13 05:28:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:03,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:04,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 05:28:04,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-13 05:28:04,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:04,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:04,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 05:28:04,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-13 05:28:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:28:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:28:04,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776938917] [2020-10-13 05:28:04,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:04,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:04,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107474191] [2020-10-13 05:28:05,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:05,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:05,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:05,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:05,003 INFO L87 Difference]: Start difference. First operand 68 states and 98 transitions. Second operand 4 states. [2020-10-13 05:28:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:05,354 INFO L93 Difference]: Finished difference Result 154 states and 230 transitions. [2020-10-13 05:28:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:28:05,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 05:28:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:05,363 INFO L225 Difference]: With dead ends: 154 [2020-10-13 05:28:05,363 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 05:28:05,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 05:28:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2020-10-13 05:28:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 05:28:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2020-10-13 05:28:05,388 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 27 [2020-10-13 05:28:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:05,388 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2020-10-13 05:28:05,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2020-10-13 05:28:05,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 05:28:05,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:05,392 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] [2020-10-13 05:28:05,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:28:05,392 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:05,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:05,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1469042964, now seen corresponding path program 1 times [2020-10-13 05:28:05,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:05,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458262399] [2020-10-13 05:28:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:05,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:06,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 05:28:06,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 05:28:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-13 05:28:06,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:06,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:06,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:06,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:06,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:06,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:06,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:06,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:06,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:06,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:07,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:07,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:28:07,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:07,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-13 05:28:07,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:07,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:28:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:28:07,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458262399] [2020-10-13 05:28:07,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:07,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:28:07,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719808593] [2020-10-13 05:28:07,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:28:07,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:07,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:28:07,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:07,585 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand 5 states. [2020-10-13 05:28:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:08,168 INFO L93 Difference]: Finished difference Result 232 states and 363 transitions. [2020-10-13 05:28:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:28:08,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-13 05:28:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:08,172 INFO L225 Difference]: With dead ends: 232 [2020-10-13 05:28:08,175 INFO L226 Difference]: Without dead ends: 190 [2020-10-13 05:28:08,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:28:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-13 05:28:08,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 165. [2020-10-13 05:28:08,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-13 05:28:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2020-10-13 05:28:08,213 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 28 [2020-10-13 05:28:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:08,219 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2020-10-13 05:28:08,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:28:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2020-10-13 05:28:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 05:28:08,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:08,224 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] [2020-10-13 05:28:08,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:28:08,225 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:08,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1874591770, now seen corresponding path program 1 times [2020-10-13 05:28:08,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:08,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564809441] [2020-10-13 05:28:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:08,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:10,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 05:28:10,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 05:28:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2115 [2020-10-13 05:28:10,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:28:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:10,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:10,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:10,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:10,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:10,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:10,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:10,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:11,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:11,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 05:28:11,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:11,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-13 05:28:11,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:28:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:28:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:28:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:28:11,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564809441] [2020-10-13 05:28:11,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:11,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 05:28:11,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652250200] [2020-10-13 05:28:11,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:28:11,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:11,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:28:11,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:28:11,236 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand 7 states. [2020-10-13 05:28:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:12,320 INFO L93 Difference]: Finished difference Result 377 states and 597 transitions. [2020-10-13 05:28:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:28:12,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-13 05:28:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:12,325 INFO L225 Difference]: With dead ends: 377 [2020-10-13 05:28:12,325 INFO L226 Difference]: Without dead ends: 257 [2020-10-13 05:28:12,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:28:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-13 05:28:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 210. [2020-10-13 05:28:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-13 05:28:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 313 transitions. [2020-10-13 05:28:12,359 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 313 transitions. Word has length 29 [2020-10-13 05:28:12,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:12,360 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 313 transitions. [2020-10-13 05:28:12,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:28:12,360 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 313 transitions. [2020-10-13 05:28:12,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 05:28:12,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:12,369 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] [2020-10-13 05:28:12,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:28:12,370 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash 214387631, now seen corresponding path program 1 times [2020-10-13 05:28:12,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:12,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247118496] [2020-10-13 05:28:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:13,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:13,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 05:28:13,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 05:28:13,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-10-13 05:28:13,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 05:28:13,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:13,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:14,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:14,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:14,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:14,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:14,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:14,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:14,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:15,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 05:28:15,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 05:28:15,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1417 [2020-10-13 05:28:15,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:15,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:28:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:15,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247118496] [2020-10-13 05:28:15,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:15,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:15,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769754812] [2020-10-13 05:28:15,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:15,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:15,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:15,532 INFO L87 Difference]: Start difference. First operand 210 states and 313 transitions. Second operand 4 states. [2020-10-13 05:28:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:15,780 INFO L93 Difference]: Finished difference Result 612 states and 911 transitions. [2020-10-13 05:28:15,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:28:15,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-13 05:28:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:15,784 INFO L225 Difference]: With dead ends: 612 [2020-10-13 05:28:15,784 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 05:28:15,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 05:28:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 226. [2020-10-13 05:28:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-13 05:28:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 332 transitions. [2020-10-13 05:28:15,816 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 332 transitions. Word has length 34 [2020-10-13 05:28:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:15,816 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 332 transitions. [2020-10-13 05:28:15,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 332 transitions. [2020-10-13 05:28:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 05:28:15,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:15,822 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] [2020-10-13 05:28:15,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:28:15,826 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:15,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:15,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1041972219, now seen corresponding path program 1 times [2020-10-13 05:28:15,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:15,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336296504] [2020-10-13 05:28:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 05:28:17,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 05:28:17,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1728 [2020-10-13 05:28:17,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:28:17,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:17,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:17,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:17,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:17,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:17,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:17,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:17,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:18,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:19,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 05:28:19,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 05:28:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-10-13 05:28:19,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:19,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:19,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:28:19,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:28:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:19,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336296504] [2020-10-13 05:28:19,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:19,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:19,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331081362] [2020-10-13 05:28:19,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:19,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:19,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:19,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:19,197 INFO L87 Difference]: Start difference. First operand 226 states and 332 transitions. Second operand 4 states. [2020-10-13 05:28:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:19,512 INFO L93 Difference]: Finished difference Result 628 states and 960 transitions. [2020-10-13 05:28:19,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:28:19,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-13 05:28:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:19,517 INFO L225 Difference]: With dead ends: 628 [2020-10-13 05:28:19,518 INFO L226 Difference]: Without dead ends: 470 [2020-10-13 05:28:19,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-13 05:28:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 321. [2020-10-13 05:28:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-13 05:28:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 472 transitions. [2020-10-13 05:28:19,537 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 472 transitions. Word has length 35 [2020-10-13 05:28:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:19,537 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 472 transitions. [2020-10-13 05:28:19,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:19,537 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 472 transitions. [2020-10-13 05:28:19,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 05:28:19,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:19,541 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] [2020-10-13 05:28:19,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:28:19,541 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:19,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1396867702, now seen corresponding path program 1 times [2020-10-13 05:28:19,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:19,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724263901] [2020-10-13 05:28:19,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:19,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:22,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:23,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:28:24,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:28:24,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:28:24,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 05:28:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:24,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:24,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:24,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:24,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:24,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:24,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:24,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:24,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:26,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:28,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:29,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:29,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 05:28:29,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:28:29,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:28:29,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 05:28:29,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:28:29,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724263901] [2020-10-13 05:28:29,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:29,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:29,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780930239] [2020-10-13 05:28:29,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:29,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:29,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:29,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:29,670 INFO L87 Difference]: Start difference. First operand 321 states and 472 transitions. Second operand 4 states. [2020-10-13 05:28:30,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:30,067 INFO L93 Difference]: Finished difference Result 877 states and 1320 transitions. [2020-10-13 05:28:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:28:30,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-13 05:28:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:30,072 INFO L225 Difference]: With dead ends: 877 [2020-10-13 05:28:30,072 INFO L226 Difference]: Without dead ends: 600 [2020-10-13 05:28:30,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-10-13 05:28:30,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 377. [2020-10-13 05:28:30,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-13 05:28:30,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 563 transitions. [2020-10-13 05:28:30,095 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 563 transitions. Word has length 41 [2020-10-13 05:28:30,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:30,096 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 563 transitions. [2020-10-13 05:28:30,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:30,097 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 563 transitions. [2020-10-13 05:28:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 05:28:30,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:30,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:30,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:28:30,101 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:30,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:30,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1306744213, now seen corresponding path program 1 times [2020-10-13 05:28:30,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:30,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724306627] [2020-10-13 05:28:30,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:30,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:31,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:32,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:33,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:35,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 05:28:35,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 58 [2020-10-13 05:28:35,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 05:28:35,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 05:28:35,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:35,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:35,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:35,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:35,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:35,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:35,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:35,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:35,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:40,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:28:40,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 74 [2020-10-13 05:28:40,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:28:40,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:28:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 05:28:40,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:28:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 05:28:40,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724306627] [2020-10-13 05:28:40,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:40,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:28:40,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016424378] [2020-10-13 05:28:40,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:28:40,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:40,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:28:40,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:28:40,207 INFO L87 Difference]: Start difference. First operand 377 states and 563 transitions. Second operand 4 states. [2020-10-13 05:28:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:40,505 INFO L93 Difference]: Finished difference Result 1030 states and 1555 transitions. [2020-10-13 05:28:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:28:40,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-13 05:28:40,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:40,510 INFO L225 Difference]: With dead ends: 1030 [2020-10-13 05:28:40,510 INFO L226 Difference]: Without dead ends: 691 [2020-10-13 05:28:40,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:28:40,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-13 05:28:40,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 398. [2020-10-13 05:28:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-13 05:28:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 581 transitions. [2020-10-13 05:28:40,528 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 581 transitions. Word has length 47 [2020-10-13 05:28:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:40,530 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 581 transitions. [2020-10-13 05:28:40,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:28:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 581 transitions. [2020-10-13 05:28:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 05:28:40,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:40,532 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 05:28:40,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:28:40,532 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1048578775, now seen corresponding path program 1 times [2020-10-13 05:28:40,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:40,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940041941] [2020-10-13 05:28:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:40,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:40,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:43,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:45,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 05:28:45,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 121 [2020-10-13 05:28:45,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 05:28:45,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 05:28:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:45,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:45,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:45,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:45,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:45,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:45,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:50,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 05:28:50,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 79 [2020-10-13 05:28:50,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 05:28:50,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:28:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 05:28:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:28:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 05:28:50,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940041941] [2020-10-13 05:28:50,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:50,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:28:50,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82456171] [2020-10-13 05:28:50,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:28:50,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:50,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:28:50,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:50,669 INFO L87 Difference]: Start difference. First operand 398 states and 581 transitions. Second operand 6 states. [2020-10-13 05:28:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:50,904 INFO L93 Difference]: Finished difference Result 822 states and 1211 transitions. [2020-10-13 05:28:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:28:50,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-13 05:28:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:50,907 INFO L225 Difference]: With dead ends: 822 [2020-10-13 05:28:50,907 INFO L226 Difference]: Without dead ends: 458 [2020-10-13 05:28:50,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:28:50,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-13 05:28:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 424. [2020-10-13 05:28:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-13 05:28:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 608 transitions. [2020-10-13 05:28:50,929 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 608 transitions. Word has length 47 [2020-10-13 05:28:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:50,931 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 608 transitions. [2020-10-13 05:28:50,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:28:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 608 transitions. [2020-10-13 05:28:50,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 05:28:50,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:50,935 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:50,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:28:50,936 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:50,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:50,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1636946980, now seen corresponding path program 1 times [2020-10-13 05:28:50,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:50,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85695774] [2020-10-13 05:28:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:50,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:53,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:54,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:55,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 05:28:55,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 67 [2020-10-13 05:28:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:28:55,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:28:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 05:28:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:28:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:55,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:55,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:55,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:28:55,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:55,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:55,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:55,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:55,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:28:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:00,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 05:29:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-13 05:29:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:29:00,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:29:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:01,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85695774] [2020-10-13 05:29:01,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:29:01,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:29:01,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489031294] [2020-10-13 05:29:01,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:29:01,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:01,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:29:01,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:29:01,053 INFO L87 Difference]: Start difference. First operand 424 states and 608 transitions. Second operand 5 states. [2020-10-13 05:29:01,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:01,533 INFO L93 Difference]: Finished difference Result 1630 states and 2344 transitions. [2020-10-13 05:29:01,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:29:01,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-13 05:29:01,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:01,539 INFO L225 Difference]: With dead ends: 1630 [2020-10-13 05:29:01,540 INFO L226 Difference]: Without dead ends: 1252 [2020-10-13 05:29:01,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:29:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2020-10-13 05:29:01,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 424. [2020-10-13 05:29:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-13 05:29:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 608 transitions. [2020-10-13 05:29:01,564 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 608 transitions. Word has length 53 [2020-10-13 05:29:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:01,564 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 608 transitions. [2020-10-13 05:29:01,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:29:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 608 transitions. [2020-10-13 05:29:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 05:29:01,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:01,566 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:01,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:29:01,566 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash 313867515, now seen corresponding path program 1 times [2020-10-13 05:29:01,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:01,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267852238] [2020-10-13 05:29:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:01,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:04,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:06,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:29:06,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 105 [2020-10-13 05:29:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 05:29:06,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:29:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 05:29:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:29:06,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:06,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:06,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:06,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:06,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:06,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:06,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:06,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:06,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:06,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:08,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:11,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:11,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 05:29:11,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 95 [2020-10-13 05:29:11,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:29:11,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:11,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:29:11,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:11,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:29:11,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:11,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267852238] [2020-10-13 05:29:11,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:29:11,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 05:29:11,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924813405] [2020-10-13 05:29:11,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:29:11,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:11,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:29:11,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:29:11,705 INFO L87 Difference]: Start difference. First operand 424 states and 608 transitions. Second operand 7 states. [2020-10-13 05:29:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:12,739 INFO L93 Difference]: Finished difference Result 2104 states and 3132 transitions. [2020-10-13 05:29:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:29:12,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-13 05:29:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:12,748 INFO L225 Difference]: With dead ends: 2104 [2020-10-13 05:29:12,748 INFO L226 Difference]: Without dead ends: 1726 [2020-10-13 05:29:12,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:29:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-10-13 05:29:12,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1312. [2020-10-13 05:29:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-13 05:29:12,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1920 transitions. [2020-10-13 05:29:12,810 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1920 transitions. Word has length 54 [2020-10-13 05:29:12,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:12,811 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 1920 transitions. [2020-10-13 05:29:12,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:29:12,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1920 transitions. [2020-10-13 05:29:12,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 05:29:12,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:12,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:12,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:29:12,815 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:12,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:12,815 INFO L82 PathProgramCache]: Analyzing trace with hash -705021934, now seen corresponding path program 1 times [2020-10-13 05:29:12,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:12,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457130850] [2020-10-13 05:29:12,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:13,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:13,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:13,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:14,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:15,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:29:17,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:29:17,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:29:17,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:17,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:29:17,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 05:29:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:17,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:17,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:17,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:17,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:22,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:22,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 05:29:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-13 05:29:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 05:29:22,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:29:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 05:29:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:22,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457130850] [2020-10-13 05:29:22,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:22,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 05:29:22,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039628955] [2020-10-13 05:29:22,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:29:22,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:22,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:29:22,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:29:22,931 INFO L87 Difference]: Start difference. First operand 1312 states and 1920 transitions. Second operand 5 states. [2020-10-13 05:29:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:23,324 INFO L93 Difference]: Finished difference Result 1832 states and 2620 transitions. [2020-10-13 05:29:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:29:23,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-13 05:29:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:23,332 INFO L225 Difference]: With dead ends: 1832 [2020-10-13 05:29:23,333 INFO L226 Difference]: Without dead ends: 1457 [2020-10-13 05:29:23,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:29:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-10-13 05:29:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1291. [2020-10-13 05:29:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-10-13 05:29:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1876 transitions. [2020-10-13 05:29:23,413 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1876 transitions. Word has length 56 [2020-10-13 05:29:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:23,414 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1876 transitions. [2020-10-13 05:29:23,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:29:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1876 transitions. [2020-10-13 05:29:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 05:29:23,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:23,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:23,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:29:23,417 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash -708856199, now seen corresponding path program 1 times [2020-10-13 05:29:23,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:23,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444745455] [2020-10-13 05:29:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:25,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:26,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:28,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 05:29:28,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 42 [2020-10-13 05:29:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:29:28,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:28,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:29:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:29:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:28,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:28,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:28,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:28,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:28,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:28,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:28,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:28,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:28,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:29,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:33,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:33,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:29:33,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 42 [2020-10-13 05:29:33,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 05:29:33,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 05:29:33,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:29:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:33,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444745455] [2020-10-13 05:29:33,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:33,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 05:29:33,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823342046] [2020-10-13 05:29:33,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:29:33,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:33,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:29:33,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:29:33,554 INFO L87 Difference]: Start difference. First operand 1291 states and 1876 transitions. Second operand 7 states. [2020-10-13 05:29:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:34,115 INFO L93 Difference]: Finished difference Result 1836 states and 2630 transitions. [2020-10-13 05:29:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:29:34,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-13 05:29:34,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:34,123 INFO L225 Difference]: With dead ends: 1836 [2020-10-13 05:29:34,124 INFO L226 Difference]: Without dead ends: 1496 [2020-10-13 05:29:34,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:29:34,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-10-13 05:29:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1366. [2020-10-13 05:29:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-10-13 05:29:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1965 transitions. [2020-10-13 05:29:34,175 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1965 transitions. Word has length 57 [2020-10-13 05:29:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:34,175 INFO L479 AbstractCegarLoop]: Abstraction has 1366 states and 1965 transitions. [2020-10-13 05:29:34,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:29:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1965 transitions. [2020-10-13 05:29:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 05:29:34,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:34,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:34,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:29:34,179 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:34,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:34,179 INFO L82 PathProgramCache]: Analyzing trace with hash -569962265, now seen corresponding path program 1 times [2020-10-13 05:29:34,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:34,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412095944] [2020-10-13 05:29:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:35,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:39,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 05:29:39,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 05:29:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:29:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:29:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:29:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:39,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:39,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:39,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:39,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:44,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 05:29:44,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 05:29:44,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 05:29:44,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:29:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:44,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412095944] [2020-10-13 05:29:44,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:44,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:29:44,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308178933] [2020-10-13 05:29:44,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:29:44,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:44,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:29:44,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:29:44,328 INFO L87 Difference]: Start difference. First operand 1366 states and 1965 transitions. Second operand 6 states. [2020-10-13 05:29:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:44,735 INFO L93 Difference]: Finished difference Result 1873 states and 2637 transitions. [2020-10-13 05:29:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 05:29:44,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 05:29:44,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:44,745 INFO L225 Difference]: With dead ends: 1873 [2020-10-13 05:29:44,745 INFO L226 Difference]: Without dead ends: 1500 [2020-10-13 05:29:44,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:29:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-10-13 05:29:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1346. [2020-10-13 05:29:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1346 states. [2020-10-13 05:29:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1919 transitions. [2020-10-13 05:29:44,815 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1919 transitions. Word has length 58 [2020-10-13 05:29:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:44,816 INFO L479 AbstractCegarLoop]: Abstraction has 1346 states and 1919 transitions. [2020-10-13 05:29:44,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:29:44,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1919 transitions. [2020-10-13 05:29:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 05:29:44,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:44,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:44,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 05:29:44,822 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:44,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1484154685, now seen corresponding path program 1 times [2020-10-13 05:29:44,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:44,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957486367] [2020-10-13 05:29:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:44,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:44,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:45,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:45,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:46,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:49,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 05:29:49,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-13 05:29:49,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:29:49,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:29:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:29:49,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:49,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:49,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:49,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:50,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:54,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:54,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 05:29:54,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-13 05:29:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:29:54,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:29:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:54,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:29:54,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:29:54,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957486367] [2020-10-13 05:29:54,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:29:54,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 05:29:54,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316183768] [2020-10-13 05:29:54,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:29:54,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:54,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:29:54,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:29:54,944 INFO L87 Difference]: Start difference. First operand 1346 states and 1919 transitions. Second operand 7 states. [2020-10-13 05:29:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:55,711 INFO L93 Difference]: Finished difference Result 2391 states and 3327 transitions. [2020-10-13 05:29:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:29:55,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-10-13 05:29:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:55,720 INFO L225 Difference]: With dead ends: 2391 [2020-10-13 05:29:55,720 INFO L226 Difference]: Without dead ends: 1736 [2020-10-13 05:29:55,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:29:55,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2020-10-13 05:29:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1332. [2020-10-13 05:29:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1332 states. [2020-10-13 05:29:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1874 transitions. [2020-10-13 05:29:55,766 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1874 transitions. Word has length 59 [2020-10-13 05:29:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:55,767 INFO L479 AbstractCegarLoop]: Abstraction has 1332 states and 1874 transitions. [2020-10-13 05:29:55,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:29:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1874 transitions. [2020-10-13 05:29:55,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 05:29:55,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:55,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:55,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 05:29:55,770 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:55,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:55,770 INFO L82 PathProgramCache]: Analyzing trace with hash -313662180, now seen corresponding path program 1 times [2020-10-13 05:29:55,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:55,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800477895] [2020-10-13 05:29:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:55,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:55,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:55,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 05:29:55,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:29:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 05:29:55,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:29:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:29:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:29:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:55,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:55,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:55,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:29:55,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:29:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:29:55,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:29:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:29:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:29:55,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:55,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:29:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:29:56,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 05:29:56,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:29:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 05:29:56,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:29:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:29:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:29:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 05:29:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:29:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 05:29:56,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800477895] [2020-10-13 05:29:56,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:29:56,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:29:56,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904888598] [2020-10-13 05:29:56,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:29:56,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:29:56,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:29:56,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:29:56,066 INFO L87 Difference]: Start difference. First operand 1332 states and 1874 transitions. Second operand 5 states. [2020-10-13 05:29:56,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:29:56,161 INFO L93 Difference]: Finished difference Result 1364 states and 1912 transitions. [2020-10-13 05:29:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:29:56,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-13 05:29:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:29:56,167 INFO L225 Difference]: With dead ends: 1364 [2020-10-13 05:29:56,168 INFO L226 Difference]: Without dead ends: 1082 [2020-10-13 05:29:56,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:29:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-10-13 05:29:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2020-10-13 05:29:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2020-10-13 05:29:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1512 transitions. [2020-10-13 05:29:56,221 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1512 transitions. Word has length 60 [2020-10-13 05:29:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:29:56,221 INFO L479 AbstractCegarLoop]: Abstraction has 1082 states and 1512 transitions. [2020-10-13 05:29:56,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:29:56,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1512 transitions. [2020-10-13 05:29:56,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 05:29:56,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:29:56,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:29:56,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 05:29:56,229 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:29:56,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:29:56,229 INFO L82 PathProgramCache]: Analyzing trace with hash -666750562, now seen corresponding path program 1 times [2020-10-13 05:29:56,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:29:56,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065496817] [2020-10-13 05:29:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:29:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:29:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:58,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:58,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:59,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:59,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:59,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:59,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:29:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:01,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 05:30:01,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 54 [2020-10-13 05:30:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:30:01,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:30:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:01,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:30:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:01,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:02,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:03,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:03,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:03,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:03,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:06,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:06,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 05:30:06,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 56 [2020-10-13 05:30:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 05:30:06,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:30:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:30:06,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 05:30:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 05:30:06,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065496817] [2020-10-13 05:30:06,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:06,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:30:06,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859673160] [2020-10-13 05:30:06,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:30:06,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:06,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:30:06,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:30:06,499 INFO L87 Difference]: Start difference. First operand 1082 states and 1512 transitions. Second operand 9 states. [2020-10-13 05:30:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:10,074 INFO L93 Difference]: Finished difference Result 2211 states and 3157 transitions. [2020-10-13 05:30:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:30:10,077 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-13 05:30:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:10,082 INFO L225 Difference]: With dead ends: 2211 [2020-10-13 05:30:10,082 INFO L226 Difference]: Without dead ends: 1273 [2020-10-13 05:30:10,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:30:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-10-13 05:30:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 984. [2020-10-13 05:30:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2020-10-13 05:30:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1364 transitions. [2020-10-13 05:30:10,127 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1364 transitions. Word has length 60 [2020-10-13 05:30:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:10,128 INFO L479 AbstractCegarLoop]: Abstraction has 984 states and 1364 transitions. [2020-10-13 05:30:10,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:30:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1364 transitions. [2020-10-13 05:30:10,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 05:30:10,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:10,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:10,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 05:30:10,130 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:10,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:10,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1426526133, now seen corresponding path program 1 times [2020-10-13 05:30:10,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:10,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197940665] [2020-10-13 05:30:10,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:11,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:11,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:11,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:11,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:12,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:15,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 05:30:15,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 47 [2020-10-13 05:30:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 05:30:15,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:30:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:15,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:15,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:15,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:30:15,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:15,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:17,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:17,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:17,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:19,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:19,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:19,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:20,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:20,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 05:30:20,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 68 [2020-10-13 05:30:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 05:30:20,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 05:30:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 05:30:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 05:30:20,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197940665] [2020-10-13 05:30:20,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:20,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:30:20,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66061927] [2020-10-13 05:30:20,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:30:20,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:20,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:30:20,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:30:20,223 INFO L87 Difference]: Start difference. First operand 984 states and 1364 transitions. Second operand 6 states. [2020-10-13 05:30:20,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:20,631 INFO L93 Difference]: Finished difference Result 2641 states and 3731 transitions. [2020-10-13 05:30:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 05:30:20,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 05:30:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:20,637 INFO L225 Difference]: With dead ends: 2641 [2020-10-13 05:30:20,637 INFO L226 Difference]: Without dead ends: 1660 [2020-10-13 05:30:20,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:30:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2020-10-13 05:30:20,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 986. [2020-10-13 05:30:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-13 05:30:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1330 transitions. [2020-10-13 05:30:20,680 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1330 transitions. Word has length 64 [2020-10-13 05:30:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:20,680 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1330 transitions. [2020-10-13 05:30:20,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:30:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1330 transitions. [2020-10-13 05:30:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 05:30:20,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:20,683 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 05:30:20,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 05:30:20,683 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:20,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1613330516, now seen corresponding path program 1 times [2020-10-13 05:30:20,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:20,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498498048] [2020-10-13 05:30:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:20,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:20,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 05:30:20,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:30:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 05:30:20,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:30:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:20,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:20,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:20,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:20,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:20,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:20,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:30:20,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:20,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:20,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:20,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:20,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 05:30:20,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:30:20,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 05:30:20,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:20,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:30:20,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:30:20,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 05:30:20,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 05:30:21,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498498048] [2020-10-13 05:30:21,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:30:21,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 05:30:21,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097929519] [2020-10-13 05:30:21,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:30:21,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:21,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:30:21,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:30:21,058 INFO L87 Difference]: Start difference. First operand 986 states and 1330 transitions. Second operand 5 states. [2020-10-13 05:30:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:21,101 INFO L93 Difference]: Finished difference Result 1018 states and 1366 transitions. [2020-10-13 05:30:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:30:21,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 05:30:21,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:21,103 INFO L225 Difference]: With dead ends: 1018 [2020-10-13 05:30:21,103 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 05:30:21,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:30:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 05:30:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2020-10-13 05:30:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 05:30:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 477 transitions. [2020-10-13 05:30:21,119 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 477 transitions. Word has length 67 [2020-10-13 05:30:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:21,119 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 477 transitions. [2020-10-13 05:30:21,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:30:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 477 transitions. [2020-10-13 05:30:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 05:30:21,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:21,121 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:21,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 05:30:21,121 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:21,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1493073857, now seen corresponding path program 1 times [2020-10-13 05:30:21,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:21,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304423358] [2020-10-13 05:30:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:21,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-13 05:30:26,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:26,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 05:30:26,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 120 [2020-10-13 05:30:26,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 05:30:26,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:30:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 05:30:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 05:30:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:26,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:26,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:26,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:26,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:26,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:26,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:30:26,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:26,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-13 05:30:31,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:31,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:30:31,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 94 [2020-10-13 05:30:31,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 05:30:31,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:30:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 05:30:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 05:30:31,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 05:30:31,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304423358] [2020-10-13 05:30:31,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:31,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:30:31,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95275177] [2020-10-13 05:30:31,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:30:31,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:31,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:30:31,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:30:31,664 INFO L87 Difference]: Start difference. First operand 365 states and 477 transitions. Second operand 9 states. [2020-10-13 05:30:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:35,237 INFO L93 Difference]: Finished difference Result 987 states and 1296 transitions. [2020-10-13 05:30:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:30:35,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-13 05:30:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:35,240 INFO L225 Difference]: With dead ends: 987 [2020-10-13 05:30:35,240 INFO L226 Difference]: Without dead ends: 627 [2020-10-13 05:30:35,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:30:35,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-13 05:30:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 373. [2020-10-13 05:30:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-13 05:30:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 472 transitions. [2020-10-13 05:30:35,258 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 472 transitions. Word has length 72 [2020-10-13 05:30:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:35,259 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 472 transitions. [2020-10-13 05:30:35,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:30:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 472 transitions. [2020-10-13 05:30:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 05:30:35,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:35,260 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:35,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 05:30:35,261 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash 764791237, now seen corresponding path program 1 times [2020-10-13 05:30:35,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:35,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137498190] [2020-10-13 05:30:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 05:30:35,292 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 05:30:35,292 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:30:35,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 05:30:35,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:30:35 BoogieIcfgContainer [2020-10-13 05:30:35,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:30:35,348 INFO L168 Benchmark]: Toolchain (without parser) took 154453.61 ms. Allocated memory was 138.4 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 101.0 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 197.8 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:35,349 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-13 05:30:35,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.09 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 180.2 MB in the end (delta: -79.2 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:35,350 INFO L168 Benchmark]: Boogie Preprocessor took 71.19 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:35,351 INFO L168 Benchmark]: RCFGBuilder took 628.13 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 155.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:35,351 INFO L168 Benchmark]: TraceAbstraction took 153327.21 ms. Allocated memory was 201.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 154.9 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 188.2 MB. Max. memory is 7.1 GB. [2020-10-13 05:30:35,354 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 422.09 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 180.2 MB in the end (delta: -79.2 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.19 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 628.13 ms. Allocated memory is still 201.9 MB. Free memory was 177.8 MB in the beginning and 155.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 153327.21 ms. Allocated memory was 201.9 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 154.9 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 188.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 97. Possible FailurePath: [L105] unsigned int a, b, r; [L106] a = __VERIFIER_nondet_uint() [L108] b = 234770789 [L110] CALL, EXPR mp_add(a, b) [L23] unsigned char a0, a1, a2, a3; [L24] unsigned char b0, b1, b2, b3; [L25] unsigned char r0, r1, r2, r3; [L26] unsigned short carry; [L27] unsigned short partial_sum; [L28] unsigned int r; [L29] unsigned char i; [L30] unsigned char na, nb; [L31] a0 = a [L32] a1 = a >> 8 [L33] a2 = a >> 16U [L34] a3 = a >> 24U [L35] b0 = b [L36] b1 = b >> 8U [L37] b2 = b >> 16U [L38] b3 = b >> 24U [L39] na = (unsigned char)4 [L40] COND TRUE a3 == (unsigned char)0 [L41] na = na - 1 [L42] COND TRUE a2 == (unsigned char)0 [L43] na = na - 1 [L44] COND TRUE a1 == (unsigned char)0 [L45] na = na - 1 [L49] nb = (unsigned char)4 [L50] COND FALSE !(b3 == (unsigned char)0) [L59] carry = (unsigned short)0 [L60] i = (unsigned char)0 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND TRUE i == (unsigned char)0 [L65] partial_sum = partial_sum + a0 [L66] COND FALSE !(i == (unsigned char)1) [L67] COND FALSE !(i == (unsigned char)2) [L68] COND FALSE !(i == (unsigned char)3) [L70] COND TRUE i < nb [L71] COND TRUE i == (unsigned char)0 [L71] partial_sum = partial_sum + b0 [L72] COND FALSE !(i == (unsigned char)1) [L73] COND FALSE !(i == (unsigned char)2) [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND TRUE i == (unsigned char)0 [L80] r0 = (unsigned char)partial_sum [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND FALSE !(i < na) [L70] COND TRUE i < nb [L71] COND FALSE !(i == (unsigned char)0) [L72] COND TRUE i == (unsigned char)1 [L72] partial_sum = partial_sum + b1 [L73] COND FALSE !(i == (unsigned char)2) [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND TRUE i == (unsigned char)1 [L81] r1 = (unsigned char)partial_sum [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND FALSE !(i < na) [L70] COND TRUE i < nb [L71] COND FALSE !(i == (unsigned char)0) [L72] COND FALSE !(i == (unsigned char)1) [L73] COND TRUE i == (unsigned char)2 [L73] partial_sum = partial_sum + b2 [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND TRUE i == (unsigned char)2 [L82] r2 = (unsigned char)partial_sum [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND FALSE !(i < na) [L70] COND TRUE i < nb [L71] COND FALSE !(i == (unsigned char)0) [L72] COND FALSE !(i == (unsigned char)1) [L73] COND FALSE !(i == (unsigned char)2) [L74] COND TRUE i == (unsigned char)3 [L74] partial_sum = partial_sum + b3 [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND TRUE i == (unsigned char)3 [L83] r3 = (unsigned char)partial_sum [L85] i = i + (unsigned char)1 [L61] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L88] COND FALSE !(i < (unsigned char)4) [L97] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L99] return r; [L110] RET, EXPR mp_add(a, b) [L110] r = mp_add(a, b) [L112] CALL __VERIFIER_assert(r == a + b) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 153.2s, OverallIterations: 22, TraceHistogramMax: 4, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1577 SDtfs, 3655 SDslu, 3243 SDs, 0 SdLazy, 5053 SolverSat, 648 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1366occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 21 MinimizatonAttempts, 4334 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 136.3s InterpolantComputationTime, 1069 NumberOfCodeBlocks, 1069 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 969 ConstructedInterpolants, 0 QuantifiedInterpolants, 273354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 250/301 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...