/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/array-examples/standard_copy7_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:46:11,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:46:11,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:46:11,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:46:11,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:46:11,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:46:11,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:46:11,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:46:11,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:46:11,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:46:11,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:46:11,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:46:11,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:46:11,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:46:11,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:46:11,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:46:11,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:46:11,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:46:11,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:46:11,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:46:11,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:46:11,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:46:11,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:46:11,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:46:11,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:46:11,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:46:11,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:46:11,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:46:11,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:46:11,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:46:11,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:46:11,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:46:11,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:46:11,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:46:11,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:46:11,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:46:11,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:46:11,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:46:11,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:46:11,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:46:11,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:46:11,481 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 04:46:11,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:46:11,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:46:11,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:46:11,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:46:11,528 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:46:11,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:46:11,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:46:11,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:46:11,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:46:11,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:46:11,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:46:11,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:46:11,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:46:11,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:46:11,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:46:11,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:46:11,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:46:11,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:46:11,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:46:11,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:46:11,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:46:11,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:46:11,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:46:11,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:46:11,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:46:11,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:46:11,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:46:11,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:46:11,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:46:11,535 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 04:46:11,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:46:11,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:46:11,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:46:11,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:46:11,850 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:46:11,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy7_ground-1.i [2020-10-13 04:46:11,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7532ab4d/10985cf759f14da6b48cfdeecf39f2c7/FLAG2f99c3a0b [2020-10-13 04:46:12,452 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:46:12,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy7_ground-1.i [2020-10-13 04:46:12,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7532ab4d/10985cf759f14da6b48cfdeecf39f2c7/FLAG2f99c3a0b [2020-10-13 04:46:12,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7532ab4d/10985cf759f14da6b48cfdeecf39f2c7 [2020-10-13 04:46:12,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:46:12,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:46:12,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:46:12,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:46:12,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:46:12,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:46:12" (1/1) ... [2020-10-13 04:46:12,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb63f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:12, skipping insertion in model container [2020-10-13 04:46:12,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:46:12" (1/1) ... [2020-10-13 04:46:12,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:46:12,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:46:13,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:46:13,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:46:13,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:46:13,082 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:46:13,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13 WrapperNode [2020-10-13 04:46:13,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:46:13,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:46:13,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:46:13,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:46:13,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13" (1/1) ... [2020-10-13 04:46:13,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13" (1/1) ... [2020-10-13 04:46:13,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13" (1/1) ... [2020-10-13 04:46:13,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13" (1/1) ... [2020-10-13 04:46:13,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13" (1/1) ... [2020-10-13 04:46:13,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13" (1/1) ... [2020-10-13 04:46:13,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13" (1/1) ... [2020-10-13 04:46:13,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:46:13,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:46:13,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:46:13,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:46:13,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13" (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 04:46:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:46:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:46:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 04:46:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:46:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:46:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 04:46:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:46:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:46:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:46:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:46:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:46:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:46:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:46:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:46:13,737 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:46:13,738 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-13 04:46:13,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:46:13 BoogieIcfgContainer [2020-10-13 04:46:13,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:46:13,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:46:13,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:46:13,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:46:13,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:46:12" (1/3) ... [2020-10-13 04:46:13,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613b9d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:46:13, skipping insertion in model container [2020-10-13 04:46:13,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:13" (2/3) ... [2020-10-13 04:46:13,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613b9d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:46:13, skipping insertion in model container [2020-10-13 04:46:13,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:46:13" (3/3) ... [2020-10-13 04:46:13,752 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy7_ground-1.i [2020-10-13 04:46:13,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:46:13,772 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:46:13,788 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:46:13,818 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:46:13,818 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:46:13,819 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:46:13,819 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:46:13,819 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:46:13,819 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:46:13,819 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:46:13,820 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:46:13,841 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-13 04:46:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 04:46:13,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:13,851 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 04:46:13,851 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:13,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:13,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2029657296, now seen corresponding path program 1 times [2020-10-13 04:46:13,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:13,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974560243] [2020-10-13 04:46:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:14,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:14,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:14,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:14,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:15,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:15,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 04:46:15,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 04:46:15,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1866 [2020-10-13 04:46:15,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:15,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 04:46:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:15,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 04:46:15,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:46:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:15,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:15,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:46:15,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:46:15,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:46:15,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:46:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:15,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:46:15,995 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 04:46:15,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974560243] [2020-10-13 04:46:15,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:46:15,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:46:16,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510293390] [2020-10-13 04:46:16,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:46:16,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:46:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:46:16,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:46:16,031 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 3 states. [2020-10-13 04:46:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:46:16,235 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2020-10-13 04:46:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:46:16,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-13 04:46:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:46:16,252 INFO L225 Difference]: With dead ends: 82 [2020-10-13 04:46:16,252 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 04:46:16,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 04:46:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 04:46:16,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-13 04:46:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 04:46:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-13 04:46:16,310 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-10-13 04:46:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:46:16,310 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-13 04:46:16,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:46:16,311 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-13 04:46:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 04:46:16,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:16,313 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 04:46:16,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:46:16,314 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:16,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2073025378, now seen corresponding path program 1 times [2020-10-13 04:46:16,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:16,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466114469] [2020-10-13 04:46:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:16,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:16,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:21,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:21,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 04:46:21,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 04:46:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4690 [2020-10-13 04:46:21,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:46:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:46:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:46:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:46:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:46:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:21,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:21,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:46:21,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:46:21,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:46:21,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:46:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 04:46:21,080 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 04:46:21,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466114469] [2020-10-13 04:46:21,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:46:21,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:46:21,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921233604] [2020-10-13 04:46:21,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:46:21,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:46:21,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:46:21,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:46:21,086 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-10-13 04:46:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:46:21,294 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2020-10-13 04:46:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:46:21,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-13 04:46:21,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:46:21,298 INFO L225 Difference]: With dead ends: 83 [2020-10-13 04:46:21,298 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:46:21,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:46:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:46:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2020-10-13 04:46:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:46:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-13 04:46:21,321 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 27 [2020-10-13 04:46:21,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:46:21,322 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-13 04:46:21,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:46:21,322 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-13 04:46:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 04:46:21,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:21,325 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 04:46:21,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:46:21,326 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:21,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:21,326 INFO L82 PathProgramCache]: Analyzing trace with hash -864373520, now seen corresponding path program 1 times [2020-10-13 04:46:21,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:21,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831904915] [2020-10-13 04:46:21,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:21,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:21,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:21,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:26,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:26,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 04:46:26,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 04:46:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 04:46:26,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:46:26,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:46:26,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:46:26,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:46:26,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:46:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:26,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:26,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:46:26,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:46:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:46:26,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:46:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:26,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:46:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 04:46:26,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831904915] [2020-10-13 04:46:26,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:46:26,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:46:26,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874284181] [2020-10-13 04:46:26,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:46:26,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:46:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:46:26,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:46:26,424 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 4 states. [2020-10-13 04:46:26,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:46:26,597 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2020-10-13 04:46:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:46:26,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-13 04:46:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:46:26,599 INFO L225 Difference]: With dead ends: 88 [2020-10-13 04:46:26,599 INFO L226 Difference]: Without dead ends: 49 [2020-10-13 04:46:26,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:46:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-13 04:46:26,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-13 04:46:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-13 04:46:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-13 04:46:26,615 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 41 [2020-10-13 04:46:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:46:26,616 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-13 04:46:26,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:46:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-13 04:46:26,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 04:46:26,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:26,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:46:26,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:46:26,623 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:26,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1132383374, now seen corresponding path program 1 times [2020-10-13 04:46:26,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:26,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973683333] [2020-10-13 04:46:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:26,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:26,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:27,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:31,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:31,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 04:46:31,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 04:46:31,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:46:31,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:31,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:46:31,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:46:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:46:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:46:31,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:46:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:31,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:46:31,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:46:31,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:46:31,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:31,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:46:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:31,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:46:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 04:46:31,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973683333] [2020-10-13 04:46:31,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:46:31,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:46:31,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278307907] [2020-10-13 04:46:31,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:46:31,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:46:31,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:46:31,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:46:31,720 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-10-13 04:46:31,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:46:31,947 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2020-10-13 04:46:31,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:46:31,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-13 04:46:31,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:46:31,949 INFO L225 Difference]: With dead ends: 104 [2020-10-13 04:46:31,949 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 04:46:31,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:46:31,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 04:46:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2020-10-13 04:46:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 04:46:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2020-10-13 04:46:31,965 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 43 [2020-10-13 04:46:31,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:46:31,965 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2020-10-13 04:46:31,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:46:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2020-10-13 04:46:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 04:46:31,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:31,967 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:46:31,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:46:31,968 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:31,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:31,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1502689504, now seen corresponding path program 2 times [2020-10-13 04:46:31,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:31,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590815142] [2020-10-13 04:46:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:32,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:36,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:36,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 04:46:36,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:46:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:46:36,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:46:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:46:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:46:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:46:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:46:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:37,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:37,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:46:37,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:46:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:46:37,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:46:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:46:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 04:46:37,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590815142] [2020-10-13 04:46:37,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:46:37,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:46:37,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856958280] [2020-10-13 04:46:37,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:46:37,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:46:37,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:46:37,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:46:37,056 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 5 states. [2020-10-13 04:46:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:46:37,189 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2020-10-13 04:46:37,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:46:37,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-13 04:46:37,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:46:37,190 INFO L225 Difference]: With dead ends: 118 [2020-10-13 04:46:37,191 INFO L226 Difference]: Without dead ends: 65 [2020-10-13 04:46:37,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:46:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-13 04:46:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-10-13 04:46:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-13 04:46:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-10-13 04:46:37,206 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 57 [2020-10-13 04:46:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:46:37,207 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-10-13 04:46:37,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:46:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-10-13 04:46:37,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 04:46:37,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:37,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:46:37,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:46:37,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:37,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1415468158, now seen corresponding path program 3 times [2020-10-13 04:46:37,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:37,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103847622] [2020-10-13 04:46:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:37,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:37,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:41,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:42,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:42,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 04:46:42,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 04:46:42,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 04:46:42,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:42,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:46:42,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 04:46:42,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:46:42,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:46:42,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:46:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:42,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:42,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:46:42,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:46:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:46:42,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:46:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:42,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:46:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 04:46:42,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103847622] [2020-10-13 04:46:42,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:46:42,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:46:42,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395247826] [2020-10-13 04:46:42,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:46:42,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:46:42,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:46:42,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:46:42,292 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 6 states. [2020-10-13 04:46:42,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:46:42,495 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2020-10-13 04:46:42,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:46:42,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-13 04:46:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:46:42,497 INFO L225 Difference]: With dead ends: 132 [2020-10-13 04:46:42,497 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 04:46:42,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:46:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 04:46:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2020-10-13 04:46:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-13 04:46:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-10-13 04:46:42,507 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 59 [2020-10-13 04:46:42,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:46:42,507 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-10-13 04:46:42,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:46:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-10-13 04:46:42,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 04:46:42,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:42,508 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:46:42,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:46:42,509 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:42,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1535075120, now seen corresponding path program 4 times [2020-10-13 04:46:42,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:42,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984033192] [2020-10-13 04:46:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:42,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:47,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:47,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 04:46:47,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:46:47,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:46:47,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:46:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:46:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:46:47,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:46:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:46:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:47,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:47,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:46:47,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:46:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:46:47,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:46:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:47,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:46:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 04:46:47,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984033192] [2020-10-13 04:46:47,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:46:47,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:46:47,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470257332] [2020-10-13 04:46:47,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:46:47,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:46:47,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:46:47,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:46:47,600 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-10-13 04:46:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:46:47,700 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2020-10-13 04:46:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:46:47,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-13 04:46:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:46:47,701 INFO L225 Difference]: With dead ends: 148 [2020-10-13 04:46:47,701 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 04:46:47,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:46:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 04:46:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-13 04:46:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 04:46:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-10-13 04:46:47,710 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 73 [2020-10-13 04:46:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:46:47,710 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-10-13 04:46:47,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:46:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-10-13 04:46:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 04:46:47,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:47,712 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 04:46:47,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:46:47,712 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:47,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:47,713 INFO L82 PathProgramCache]: Analyzing trace with hash 412007534, now seen corresponding path program 5 times [2020-10-13 04:46:47,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:47,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137143165] [2020-10-13 04:46:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:47,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:47,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:52,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:52,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 04:46:52,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:46:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:46:52,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:46:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:46:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:46:52,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:46:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:46:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:52,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:52,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:52,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:46:52,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:46:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:46:52,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:46:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:52,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:46:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 04:46:52,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137143165] [2020-10-13 04:46:52,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:46:52,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:46:52,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246389952] [2020-10-13 04:46:52,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:46:52,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:46:52,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:46:52,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:46:52,809 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 7 states. [2020-10-13 04:46:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:46:53,084 INFO L93 Difference]: Finished difference Result 160 states and 181 transitions. [2020-10-13 04:46:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:46:53,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-10-13 04:46:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:46:53,087 INFO L225 Difference]: With dead ends: 160 [2020-10-13 04:46:53,087 INFO L226 Difference]: Without dead ends: 101 [2020-10-13 04:46:53,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:46:53,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-13 04:46:53,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2020-10-13 04:46:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-13 04:46:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2020-10-13 04:46:53,106 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 75 [2020-10-13 04:46:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:46:53,107 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2020-10-13 04:46:53,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:46:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2020-10-13 04:46:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 04:46:53,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:53,108 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 04:46:53,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:46:53,108 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:53,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:53,108 INFO L82 PathProgramCache]: Analyzing trace with hash 46719168, now seen corresponding path program 6 times [2020-10-13 04:46:53,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:53,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312300159] [2020-10-13 04:46:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:53,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:58,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:58,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 04:46:58,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:46:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 04:46:58,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:46:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:46:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:46:58,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:46:58,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:46:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:58,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:46:58,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:46:58,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:46:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:46:58,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:46:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:46:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:46:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:46:58,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:46:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 04:46:58,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312300159] [2020-10-13 04:46:58,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:46:58,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:46:58,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451036784] [2020-10-13 04:46:58,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:46:58,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:46:58,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:46:58,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:46:58,234 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand 7 states. [2020-10-13 04:46:58,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:46:58,377 INFO L93 Difference]: Finished difference Result 178 states and 194 transitions. [2020-10-13 04:46:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:46:58,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-13 04:46:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:46:58,380 INFO L225 Difference]: With dead ends: 178 [2020-10-13 04:46:58,380 INFO L226 Difference]: Without dead ends: 97 [2020-10-13 04:46:58,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:46:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-13 04:46:58,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-13 04:46:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 04:46:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-10-13 04:46:58,394 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 89 [2020-10-13 04:46:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:46:58,396 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-10-13 04:46:58,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:46:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-10-13 04:46:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 04:46:58,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:46:58,404 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 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 04:46:58,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:46:58,404 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:46:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:46:58,409 INFO L82 PathProgramCache]: Analyzing trace with hash -175111074, now seen corresponding path program 7 times [2020-10-13 04:46:58,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:46:58,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723443358] [2020-10-13 04:46:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:46:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:46:58,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:58,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:58,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:46:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:03,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:03,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 04:47:03,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:47:03,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 04:47:03,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:47:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 04:47:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:47:03,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:03,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:03,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:03,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:03,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 04:47:03,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723443358] [2020-10-13 04:47:03,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:03,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:47:03,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131356541] [2020-10-13 04:47:03,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:47:03,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:03,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:47:03,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:47:03,526 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 8 states. [2020-10-13 04:47:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:03,846 INFO L93 Difference]: Finished difference Result 188 states and 209 transitions. [2020-10-13 04:47:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:47:03,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-10-13 04:47:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:03,848 INFO L225 Difference]: With dead ends: 188 [2020-10-13 04:47:03,849 INFO L226 Difference]: Without dead ends: 117 [2020-10-13 04:47:03,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:47:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-13 04:47:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2020-10-13 04:47:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 04:47:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-10-13 04:47:03,867 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 91 [2020-10-13 04:47:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:03,870 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-10-13 04:47:03,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:47:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-10-13 04:47:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 04:47:03,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:03,878 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 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 04:47:03,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:47:03,879 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:03,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:03,879 INFO L82 PathProgramCache]: Analyzing trace with hash -840301392, now seen corresponding path program 8 times [2020-10-13 04:47:03,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:03,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641299629] [2020-10-13 04:47:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:03,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:07,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:08,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:08,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 04:47:08,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:47:08,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:47:08,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:47:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:47:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:47:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:08,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:08,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:08,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:08,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:08,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-13 04:47:08,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641299629] [2020-10-13 04:47:08,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:08,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:47:08,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903536709] [2020-10-13 04:47:08,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:47:08,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:08,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:47:08,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:47:08,996 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 8 states. [2020-10-13 04:47:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:09,125 INFO L93 Difference]: Finished difference Result 208 states and 224 transitions. [2020-10-13 04:47:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:47:09,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2020-10-13 04:47:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:09,127 INFO L225 Difference]: With dead ends: 208 [2020-10-13 04:47:09,127 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 04:47:09,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:47:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 04:47:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-10-13 04:47:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-13 04:47:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2020-10-13 04:47:09,145 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 105 [2020-10-13 04:47:09,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:09,145 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2020-10-13 04:47:09,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:47:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2020-10-13 04:47:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 04:47:09,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:09,148 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 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 04:47:09,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:47:09,148 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:09,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:09,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1424108622, now seen corresponding path program 9 times [2020-10-13 04:47:09,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:09,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67701114] [2020-10-13 04:47:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:09,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:14,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:14,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 04:47:14,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:47:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 04:47:14,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:47:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 04:47:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:47:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:14,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:14,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:14,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:14,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-13 04:47:14,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67701114] [2020-10-13 04:47:14,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:14,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:47:14,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817607505] [2020-10-13 04:47:14,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:47:14,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:14,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:47:14,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:47:14,294 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand 9 states. [2020-10-13 04:47:14,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:14,610 INFO L93 Difference]: Finished difference Result 216 states and 237 transitions. [2020-10-13 04:47:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:47:14,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-10-13 04:47:14,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:14,612 INFO L225 Difference]: With dead ends: 216 [2020-10-13 04:47:14,612 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 04:47:14,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:47:14,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 04:47:14,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2020-10-13 04:47:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-13 04:47:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2020-10-13 04:47:14,619 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 107 [2020-10-13 04:47:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:14,620 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2020-10-13 04:47:14,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:47:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2020-10-13 04:47:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 04:47:14,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:14,621 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 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 04:47:14,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:47:14,622 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:14,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:14,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1667500192, now seen corresponding path program 10 times [2020-10-13 04:47:14,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:14,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556776792] [2020-10-13 04:47:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:14,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:14,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:14,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:19,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:19,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 04:47:19,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:47:19,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 04:47:19,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:47:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:47:19,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:47:19,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:19,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:19,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:19,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:19,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:19,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:19,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:19,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:19,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:19,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:19,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-13 04:47:19,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556776792] [2020-10-13 04:47:19,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:19,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:47:19,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252256433] [2020-10-13 04:47:19,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:47:19,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:19,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:47:19,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:47:19,754 INFO L87 Difference]: Start difference. First operand 126 states and 134 transitions. Second operand 9 states. [2020-10-13 04:47:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:19,890 INFO L93 Difference]: Finished difference Result 238 states and 254 transitions. [2020-10-13 04:47:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:47:19,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-10-13 04:47:19,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:19,892 INFO L225 Difference]: With dead ends: 238 [2020-10-13 04:47:19,893 INFO L226 Difference]: Without dead ends: 129 [2020-10-13 04:47:19,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:47:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-13 04:47:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2020-10-13 04:47:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-13 04:47:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2020-10-13 04:47:19,900 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 121 [2020-10-13 04:47:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:19,900 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2020-10-13 04:47:19,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:47:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2020-10-13 04:47:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 04:47:19,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:19,902 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 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 04:47:19,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:47:19,903 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:19,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:19,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1543162818, now seen corresponding path program 11 times [2020-10-13 04:47:19,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:19,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078632721] [2020-10-13 04:47:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:20,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:20,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:24,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:24,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 04:47:24,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:47:24,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 04:47:24,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:47:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 04:47:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:47:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:25,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:25,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:25,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:25,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:25,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:25,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:25,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-13 04:47:25,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078632721] [2020-10-13 04:47:25,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:25,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:47:25,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280173230] [2020-10-13 04:47:25,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:47:25,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:25,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:47:25,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:47:25,035 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 10 states. [2020-10-13 04:47:25,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:25,406 INFO L93 Difference]: Finished difference Result 244 states and 265 transitions. [2020-10-13 04:47:25,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:47:25,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-10-13 04:47:25,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:25,408 INFO L225 Difference]: With dead ends: 244 [2020-10-13 04:47:25,409 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 04:47:25,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:47:25,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 04:47:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 142. [2020-10-13 04:47:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-13 04:47:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2020-10-13 04:47:25,416 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 123 [2020-10-13 04:47:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:25,416 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2020-10-13 04:47:25,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:47:25,416 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2020-10-13 04:47:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 04:47:25,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:25,417 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 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 04:47:25,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:47:25,418 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:25,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:25,418 INFO L82 PathProgramCache]: Analyzing trace with hash 615967888, now seen corresponding path program 12 times [2020-10-13 04:47:25,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:25,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311478124] [2020-10-13 04:47:25,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:25,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:30,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:30,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 04:47:30,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:47:30,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 04:47:30,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:30,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:47:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:47:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:47:30,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:30,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:30,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:30,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:30,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:30,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:30,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-13 04:47:30,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311478124] [2020-10-13 04:47:30,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:30,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:47:30,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746797026] [2020-10-13 04:47:30,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:47:30,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:30,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:47:30,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:47:30,585 INFO L87 Difference]: Start difference. First operand 142 states and 150 transitions. Second operand 10 states. [2020-10-13 04:47:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:30,709 INFO L93 Difference]: Finished difference Result 268 states and 284 transitions. [2020-10-13 04:47:30,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:47:30,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-10-13 04:47:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:30,712 INFO L225 Difference]: With dead ends: 268 [2020-10-13 04:47:30,713 INFO L226 Difference]: Without dead ends: 145 [2020-10-13 04:47:30,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:47:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-13 04:47:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2020-10-13 04:47:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-13 04:47:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2020-10-13 04:47:30,720 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 137 [2020-10-13 04:47:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:30,720 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2020-10-13 04:47:30,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:47:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2020-10-13 04:47:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 04:47:30,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:30,722 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 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 04:47:30,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:47:30,722 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:30,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:30,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1417223214, now seen corresponding path program 13 times [2020-10-13 04:47:30,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:30,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30174579] [2020-10-13 04:47:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:30,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:35,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:35,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 04:47:35,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:47:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-13 04:47:35,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:47:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 04:47:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:47:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:35,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:35,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:35,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:35,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:35,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-13 04:47:35,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30174579] [2020-10-13 04:47:35,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:35,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:47:35,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681065599] [2020-10-13 04:47:35,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:47:35,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:47:35,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:47:35,935 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 11 states. [2020-10-13 04:47:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:36,318 INFO L93 Difference]: Finished difference Result 272 states and 293 transitions. [2020-10-13 04:47:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:47:36,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 139 [2020-10-13 04:47:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:36,320 INFO L225 Difference]: With dead ends: 272 [2020-10-13 04:47:36,320 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 04:47:36,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:47:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 04:47:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 158. [2020-10-13 04:47:36,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 04:47:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2020-10-13 04:47:36,332 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 139 [2020-10-13 04:47:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:36,332 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2020-10-13 04:47:36,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:47:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2020-10-13 04:47:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 04:47:36,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:36,337 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 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 04:47:36,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:47:36,337 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:36,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:36,338 INFO L82 PathProgramCache]: Analyzing trace with hash 2002956416, now seen corresponding path program 14 times [2020-10-13 04:47:36,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:36,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860964756] [2020-10-13 04:47:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:36,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:36,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:36,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:36,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:41,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:41,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 04:47:41,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:47:41,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-13 04:47:41,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:41,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:47:41,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:47:41,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:47:41,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:41,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:41,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:41,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:41,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:41,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:41,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2020-10-13 04:47:41,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860964756] [2020-10-13 04:47:41,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:41,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:47:41,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072307638] [2020-10-13 04:47:41,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:47:41,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:41,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:47:41,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:47:41,535 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand 11 states. [2020-10-13 04:47:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:41,659 INFO L93 Difference]: Finished difference Result 298 states and 314 transitions. [2020-10-13 04:47:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:47:41,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 153 [2020-10-13 04:47:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:41,661 INFO L225 Difference]: With dead ends: 298 [2020-10-13 04:47:41,662 INFO L226 Difference]: Without dead ends: 161 [2020-10-13 04:47:41,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:47:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-13 04:47:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2020-10-13 04:47:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-13 04:47:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 168 transitions. [2020-10-13 04:47:41,669 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 168 transitions. Word has length 153 [2020-10-13 04:47:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:41,669 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 168 transitions. [2020-10-13 04:47:41,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:47:41,669 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 168 transitions. [2020-10-13 04:47:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 04:47:41,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:41,671 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 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 04:47:41,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:47:41,671 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:41,672 INFO L82 PathProgramCache]: Analyzing trace with hash -608312290, now seen corresponding path program 15 times [2020-10-13 04:47:41,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:41,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177523781] [2020-10-13 04:47:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:41,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:41,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:41,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:41,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:46,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:46,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 04:47:46,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:47:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:47:46,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:47:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 04:47:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:47:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:46,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:46,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:46,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:46,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:46,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:46,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2020-10-13 04:47:46,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177523781] [2020-10-13 04:47:46,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:46,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:47:46,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914912807] [2020-10-13 04:47:46,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:47:46,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:46,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:47:46,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:47:46,808 INFO L87 Difference]: Start difference. First operand 160 states and 168 transitions. Second operand 12 states. [2020-10-13 04:47:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:47,214 INFO L93 Difference]: Finished difference Result 300 states and 321 transitions. [2020-10-13 04:47:47,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:47:47,214 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 155 [2020-10-13 04:47:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:47,216 INFO L225 Difference]: With dead ends: 300 [2020-10-13 04:47:47,216 INFO L226 Difference]: Without dead ends: 181 [2020-10-13 04:47:47,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:47:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-13 04:47:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2020-10-13 04:47:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 04:47:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 182 transitions. [2020-10-13 04:47:47,226 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 182 transitions. Word has length 155 [2020-10-13 04:47:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:47,226 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 182 transitions. [2020-10-13 04:47:47,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:47:47,226 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 182 transitions. [2020-10-13 04:47:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 04:47:47,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:47,227 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 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 04:47:47,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:47:47,228 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:47,228 INFO L82 PathProgramCache]: Analyzing trace with hash -991472528, now seen corresponding path program 16 times [2020-10-13 04:47:47,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:47,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556176105] [2020-10-13 04:47:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:47,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:52,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:52,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 04:47:52,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:47:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-13 04:47:52,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:47:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:47:52,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:47:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:52,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:52,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:52,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:52,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:52,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:52,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:47:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2020-10-13 04:47:52,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556176105] [2020-10-13 04:47:52,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:52,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:47:52,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972628614] [2020-10-13 04:47:52,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:47:52,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:52,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:47:52,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:47:52,448 INFO L87 Difference]: Start difference. First operand 174 states and 182 transitions. Second operand 12 states. [2020-10-13 04:47:52,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:52,603 INFO L93 Difference]: Finished difference Result 328 states and 344 transitions. [2020-10-13 04:47:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:47:52,603 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 169 [2020-10-13 04:47:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:52,605 INFO L225 Difference]: With dead ends: 328 [2020-10-13 04:47:52,605 INFO L226 Difference]: Without dead ends: 177 [2020-10-13 04:47:52,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:47:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-13 04:47:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2020-10-13 04:47:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-13 04:47:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 184 transitions. [2020-10-13 04:47:52,613 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 184 transitions. Word has length 169 [2020-10-13 04:47:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:52,613 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 184 transitions. [2020-10-13 04:47:52,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:47:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 184 transitions. [2020-10-13 04:47:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 04:47:52,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:52,615 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 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 04:47:52,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:47:52,615 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:52,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1286370290, now seen corresponding path program 17 times [2020-10-13 04:47:52,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:52,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778876151] [2020-10-13 04:47:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:52,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:52,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:57,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:57,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 04:47:57,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:47:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-13 04:47:57,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:47:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:47:57,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:47:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:57,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:47:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:57,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:57,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:47:57,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:47:57,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:47:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:47:57,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:47:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:47:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:47:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:47:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:47:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2020-10-13 04:47:57,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778876151] [2020-10-13 04:47:57,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:47:57,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:47:57,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868446596] [2020-10-13 04:47:57,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:47:57,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:47:57,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:47:57,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:47:57,878 INFO L87 Difference]: Start difference. First operand 176 states and 184 transitions. Second operand 13 states. [2020-10-13 04:47:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:47:58,025 INFO L93 Difference]: Finished difference Result 330 states and 346 transitions. [2020-10-13 04:47:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:47:58,025 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 171 [2020-10-13 04:47:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:47:58,027 INFO L225 Difference]: With dead ends: 330 [2020-10-13 04:47:58,027 INFO L226 Difference]: Without dead ends: 179 [2020-10-13 04:47:58,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:47:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-13 04:47:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2020-10-13 04:47:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 04:47:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 186 transitions. [2020-10-13 04:47:58,037 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 186 transitions. Word has length 171 [2020-10-13 04:47:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:47:58,037 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 186 transitions. [2020-10-13 04:47:58,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:47:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 186 transitions. [2020-10-13 04:47:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 04:47:58,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:47:58,039 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 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 04:47:58,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:47:58,039 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:47:58,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:47:58,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1215278036, now seen corresponding path program 18 times [2020-10-13 04:47:58,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:47:58,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275152092] [2020-10-13 04:47:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:47:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:47:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:58,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:47:58,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:03,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:03,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 04:48:03,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-13 04:48:03,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:48:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 04:48:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:48:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:03,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:03,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:03,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:03,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:03,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:03,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:48:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2020-10-13 04:48:03,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275152092] [2020-10-13 04:48:03,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:03,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:48:03,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697737675] [2020-10-13 04:48:03,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:48:03,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:03,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:48:03,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:48:03,294 INFO L87 Difference]: Start difference. First operand 178 states and 186 transitions. Second operand 13 states. [2020-10-13 04:48:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:03,750 INFO L93 Difference]: Finished difference Result 330 states and 351 transitions. [2020-10-13 04:48:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:48:03,751 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 173 [2020-10-13 04:48:03,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:03,753 INFO L225 Difference]: With dead ends: 330 [2020-10-13 04:48:03,753 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 04:48:03,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:48:03,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 04:48:03,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 192. [2020-10-13 04:48:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 04:48:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 200 transitions. [2020-10-13 04:48:03,762 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 200 transitions. Word has length 173 [2020-10-13 04:48:03,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:03,762 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 200 transitions. [2020-10-13 04:48:03,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:48:03,762 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 200 transitions. [2020-10-13 04:48:03,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 04:48:03,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:03,764 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 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 04:48:03,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:48:03,764 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:03,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1488589822, now seen corresponding path program 19 times [2020-10-13 04:48:03,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:03,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825437788] [2020-10-13 04:48:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:03,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:08,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:08,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 04:48:08,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:08,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 04:48:08,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:08,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:48:08,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:48:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:48:08,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:08,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:08,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:08,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:08,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:48:08,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2020-10-13 04:48:08,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825437788] [2020-10-13 04:48:08,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:08,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:48:08,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450195333] [2020-10-13 04:48:08,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:48:08,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:08,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:48:08,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:48:08,960 INFO L87 Difference]: Start difference. First operand 192 states and 200 transitions. Second operand 14 states. [2020-10-13 04:48:09,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:09,108 INFO L93 Difference]: Finished difference Result 360 states and 376 transitions. [2020-10-13 04:48:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:48:09,110 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 187 [2020-10-13 04:48:09,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:09,112 INFO L225 Difference]: With dead ends: 360 [2020-10-13 04:48:09,112 INFO L226 Difference]: Without dead ends: 195 [2020-10-13 04:48:09,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:48:09,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-13 04:48:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2020-10-13 04:48:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 04:48:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2020-10-13 04:48:09,126 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 187 [2020-10-13 04:48:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:09,128 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2020-10-13 04:48:09,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:48:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2020-10-13 04:48:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-13 04:48:09,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:09,129 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 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 04:48:09,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:48:09,130 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:09,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:09,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1907433444, now seen corresponding path program 20 times [2020-10-13 04:48:09,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:09,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563844761] [2020-10-13 04:48:09,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:09,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:09,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:09,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:14,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:14,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-13 04:48:14,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:14,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-10-13 04:48:14,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:48:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:48:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:48:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:14,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:14,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:14,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:14,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:14,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:48:14,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:14,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:14,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2020-10-13 04:48:14,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563844761] [2020-10-13 04:48:14,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:14,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:48:14,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297904478] [2020-10-13 04:48:14,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:48:14,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:14,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:48:14,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:48:14,507 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand 14 states. [2020-10-13 04:48:15,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:15,009 INFO L93 Difference]: Finished difference Result 358 states and 379 transitions. [2020-10-13 04:48:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:48:15,009 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2020-10-13 04:48:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:15,012 INFO L225 Difference]: With dead ends: 358 [2020-10-13 04:48:15,012 INFO L226 Difference]: Without dead ends: 215 [2020-10-13 04:48:15,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:48:15,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-13 04:48:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 208. [2020-10-13 04:48:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-13 04:48:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 216 transitions. [2020-10-13 04:48:15,020 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 216 transitions. Word has length 189 [2020-10-13 04:48:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:15,021 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 216 transitions. [2020-10-13 04:48:15,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:48:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 216 transitions. [2020-10-13 04:48:15,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-13 04:48:15,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:15,022 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 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 04:48:15,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:48:15,023 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:15,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:15,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1299282926, now seen corresponding path program 21 times [2020-10-13 04:48:15,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:15,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31256536] [2020-10-13 04:48:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:15,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:20,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:20,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 04:48:20,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:20,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 04:48:20,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:48:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:48:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:48:20,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:20,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:20,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:20,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:20,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:20,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:48:20,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-13 04:48:20,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31256536] [2020-10-13 04:48:20,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:20,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:48:20,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162514151] [2020-10-13 04:48:20,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:48:20,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:20,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:48:20,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:48:20,256 INFO L87 Difference]: Start difference. First operand 208 states and 216 transitions. Second operand 15 states. [2020-10-13 04:48:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:20,856 INFO L93 Difference]: Finished difference Result 384 states and 405 transitions. [2020-10-13 04:48:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:48:20,857 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 203 [2020-10-13 04:48:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:20,858 INFO L225 Difference]: With dead ends: 384 [2020-10-13 04:48:20,859 INFO L226 Difference]: Without dead ends: 229 [2020-10-13 04:48:20,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:48:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-13 04:48:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 222. [2020-10-13 04:48:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-13 04:48:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 230 transitions. [2020-10-13 04:48:20,868 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 230 transitions. Word has length 203 [2020-10-13 04:48:20,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:20,869 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 230 transitions. [2020-10-13 04:48:20,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:48:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 230 transitions. [2020-10-13 04:48:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 04:48:20,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:20,871 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 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 04:48:20,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:48:20,871 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:20,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:20,872 INFO L82 PathProgramCache]: Analyzing trace with hash -376799168, now seen corresponding path program 22 times [2020-10-13 04:48:20,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:20,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348115655] [2020-10-13 04:48:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:21,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:26,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:26,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 04:48:26,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-13 04:48:26,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:48:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:48:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:48:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:26,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:26,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:26,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:48:26,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-10-13 04:48:26,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348115655] [2020-10-13 04:48:26,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:26,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:48:26,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080490313] [2020-10-13 04:48:26,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:48:26,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:26,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:48:26,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:48:26,222 INFO L87 Difference]: Start difference. First operand 222 states and 230 transitions. Second operand 15 states. [2020-10-13 04:48:26,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:26,411 INFO L93 Difference]: Finished difference Result 418 states and 434 transitions. [2020-10-13 04:48:26,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:48:26,411 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 217 [2020-10-13 04:48:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:26,413 INFO L225 Difference]: With dead ends: 418 [2020-10-13 04:48:26,413 INFO L226 Difference]: Without dead ends: 225 [2020-10-13 04:48:26,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:48:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-13 04:48:26,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2020-10-13 04:48:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-13 04:48:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 232 transitions. [2020-10-13 04:48:26,422 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 232 transitions. Word has length 217 [2020-10-13 04:48:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:26,422 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 232 transitions. [2020-10-13 04:48:26,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:48:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 232 transitions. [2020-10-13 04:48:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 04:48:26,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:26,424 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 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 04:48:26,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:48:26,424 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:26,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:26,425 INFO L82 PathProgramCache]: Analyzing trace with hash 385467358, now seen corresponding path program 23 times [2020-10-13 04:48:26,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:26,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861981346] [2020-10-13 04:48:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:26,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:31,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:31,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-13 04:48:31,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:31,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 04:48:31,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:48:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:48:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:48:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:31,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:31,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:31,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:31,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:31,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:31,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:48:31,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:31,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:31,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:31,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-10-13 04:48:31,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861981346] [2020-10-13 04:48:31,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:31,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:48:31,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486328203] [2020-10-13 04:48:31,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:48:31,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:31,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:48:31,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:48:31,651 INFO L87 Difference]: Start difference. First operand 224 states and 232 transitions. Second operand 16 states. [2020-10-13 04:48:31,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:31,792 INFO L93 Difference]: Finished difference Result 420 states and 436 transitions. [2020-10-13 04:48:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:48:31,792 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 219 [2020-10-13 04:48:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:31,794 INFO L225 Difference]: With dead ends: 420 [2020-10-13 04:48:31,794 INFO L226 Difference]: Without dead ends: 227 [2020-10-13 04:48:31,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:48:31,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-13 04:48:31,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2020-10-13 04:48:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-13 04:48:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 234 transitions. [2020-10-13 04:48:31,803 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 234 transitions. Word has length 219 [2020-10-13 04:48:31,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:31,803 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 234 transitions. [2020-10-13 04:48:31,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:48:31,803 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 234 transitions. [2020-10-13 04:48:31,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 04:48:31,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:31,805 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 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 04:48:31,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:48:31,805 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:31,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1515808772, now seen corresponding path program 24 times [2020-10-13 04:48:31,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:31,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778986626] [2020-10-13 04:48:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:36,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:36,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 04:48:36,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:36,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-13 04:48:36,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:36,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:48:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 04:48:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:48:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:37,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:37,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:37,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:37,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:37,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:48:37,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2020-10-13 04:48:37,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778986626] [2020-10-13 04:48:37,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:37,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:48:37,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885179375] [2020-10-13 04:48:37,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:48:37,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:37,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:48:37,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:48:37,152 INFO L87 Difference]: Start difference. First operand 226 states and 234 transitions. Second operand 16 states. [2020-10-13 04:48:37,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:37,702 INFO L93 Difference]: Finished difference Result 414 states and 435 transitions. [2020-10-13 04:48:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:48:37,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 221 [2020-10-13 04:48:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:37,705 INFO L225 Difference]: With dead ends: 414 [2020-10-13 04:48:37,705 INFO L226 Difference]: Without dead ends: 247 [2020-10-13 04:48:37,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:48:37,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-13 04:48:37,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2020-10-13 04:48:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-13 04:48:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 248 transitions. [2020-10-13 04:48:37,717 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 248 transitions. Word has length 221 [2020-10-13 04:48:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:37,717 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 248 transitions. [2020-10-13 04:48:37,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:48:37,717 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 248 transitions. [2020-10-13 04:48:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-13 04:48:37,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:37,719 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 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 04:48:37,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:48:37,719 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:37,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:37,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1054010318, now seen corresponding path program 25 times [2020-10-13 04:48:37,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:37,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254586815] [2020-10-13 04:48:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:37,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:37,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:42,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-13 04:48:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5216 [2020-10-13 04:48:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:48:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 04:48:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:48:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:43,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:43,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:43,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:43,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:43,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:48:43,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:43,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:43,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:43,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:43,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2020-10-13 04:48:43,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254586815] [2020-10-13 04:48:43,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:43,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:48:43,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562036808] [2020-10-13 04:48:43,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:48:43,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:43,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:48:43,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:48:43,171 INFO L87 Difference]: Start difference. First operand 240 states and 248 transitions. Second operand 17 states. [2020-10-13 04:48:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:43,756 INFO L93 Difference]: Finished difference Result 440 states and 461 transitions. [2020-10-13 04:48:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:48:43,757 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 235 [2020-10-13 04:48:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:43,758 INFO L225 Difference]: With dead ends: 440 [2020-10-13 04:48:43,759 INFO L226 Difference]: Without dead ends: 261 [2020-10-13 04:48:43,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:48:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-13 04:48:43,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 254. [2020-10-13 04:48:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-13 04:48:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 262 transitions. [2020-10-13 04:48:43,769 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 262 transitions. Word has length 235 [2020-10-13 04:48:43,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:43,769 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 262 transitions. [2020-10-13 04:48:43,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:48:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 262 transitions. [2020-10-13 04:48:43,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 04:48:43,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:43,771 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 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 04:48:43,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:48:43,771 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:43,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:43,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2142480416, now seen corresponding path program 26 times [2020-10-13 04:48:43,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:43,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368766942] [2020-10-13 04:48:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:43,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:43,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:43,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:44,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:44,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:48,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:48,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-13 04:48:48,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5169 [2020-10-13 04:48:48,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:48:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:48:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:48:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:49,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:49,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:49,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:48:49,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:49,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:49,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1372 trivial. 0 not checked. [2020-10-13 04:48:49,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368766942] [2020-10-13 04:48:49,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:49,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:48:49,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326564794] [2020-10-13 04:48:49,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:48:49,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:49,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:48:49,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:48:49,164 INFO L87 Difference]: Start difference. First operand 254 states and 262 transitions. Second operand 17 states. [2020-10-13 04:48:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:49,350 INFO L93 Difference]: Finished difference Result 478 states and 494 transitions. [2020-10-13 04:48:49,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:48:49,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 249 [2020-10-13 04:48:49,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:49,352 INFO L225 Difference]: With dead ends: 478 [2020-10-13 04:48:49,352 INFO L226 Difference]: Without dead ends: 257 [2020-10-13 04:48:49,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:48:49,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-13 04:48:49,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2020-10-13 04:48:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-13 04:48:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 264 transitions. [2020-10-13 04:48:49,364 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 264 transitions. Word has length 249 [2020-10-13 04:48:49,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:49,365 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 264 transitions. [2020-10-13 04:48:49,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:48:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 264 transitions. [2020-10-13 04:48:49,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 04:48:49,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:49,367 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 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 04:48:49,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:48:49,368 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:49,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:49,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1383920574, now seen corresponding path program 27 times [2020-10-13 04:48:49,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:49,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891770599] [2020-10-13 04:48:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:49,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:54,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:54,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-13 04:48:54,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:48:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:48:54,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:54,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:48:54,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 04:48:54,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:48:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:54,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:48:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:54,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:54,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:48:54,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:48:54,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:48:54,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:48:54,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:48:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:48:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:48:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:48:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:48:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1372 trivial. 0 not checked. [2020-10-13 04:48:54,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891770599] [2020-10-13 04:48:54,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:48:54,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:48:54,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891887461] [2020-10-13 04:48:54,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:48:54,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:48:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:48:54,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:48:54,633 INFO L87 Difference]: Start difference. First operand 256 states and 264 transitions. Second operand 18 states. [2020-10-13 04:48:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:48:55,263 INFO L93 Difference]: Finished difference Result 468 states and 489 transitions. [2020-10-13 04:48:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:48:55,263 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 251 [2020-10-13 04:48:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:48:55,266 INFO L225 Difference]: With dead ends: 468 [2020-10-13 04:48:55,266 INFO L226 Difference]: Without dead ends: 277 [2020-10-13 04:48:55,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:48:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-13 04:48:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 270. [2020-10-13 04:48:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-13 04:48:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 278 transitions. [2020-10-13 04:48:55,275 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 278 transitions. Word has length 251 [2020-10-13 04:48:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:48:55,275 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 278 transitions. [2020-10-13 04:48:55,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:48:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 278 transitions. [2020-10-13 04:48:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-13 04:48:55,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:48:55,277 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 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 04:48:55,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:48:55,277 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:48:55,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:48:55,278 INFO L82 PathProgramCache]: Analyzing trace with hash 902663184, now seen corresponding path program 28 times [2020-10-13 04:48:55,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:48:55,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905641008] [2020-10-13 04:48:55,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:48:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:48:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:55,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:55,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:48:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:00,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:00,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 04:49:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:49:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5473 [2020-10-13 04:49:00,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:49:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:49:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:49:00,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:01,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:49:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:01,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:01,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:49:01,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:49:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:49:01,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:49:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:49:01,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:49:01,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:49:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1575 trivial. 0 not checked. [2020-10-13 04:49:01,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905641008] [2020-10-13 04:49:01,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:49:01,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:49:01,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694284777] [2020-10-13 04:49:01,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:49:01,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:49:01,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:49:01,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:49:01,103 INFO L87 Difference]: Start difference. First operand 270 states and 278 transitions. Second operand 18 states. [2020-10-13 04:49:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:49:01,327 INFO L93 Difference]: Finished difference Result 508 states and 524 transitions. [2020-10-13 04:49:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:49:01,328 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 265 [2020-10-13 04:49:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:49:01,330 INFO L225 Difference]: With dead ends: 508 [2020-10-13 04:49:01,330 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 04:49:01,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:49:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 04:49:01,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 272. [2020-10-13 04:49:01,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-13 04:49:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 280 transitions. [2020-10-13 04:49:01,339 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 280 transitions. Word has length 265 [2020-10-13 04:49:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:49:01,339 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 280 transitions. [2020-10-13 04:49:01,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:49:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 280 transitions. [2020-10-13 04:49:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-13 04:49:01,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:49:01,341 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 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 04:49:01,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:49:01,342 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:49:01,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:49:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash -478684242, now seen corresponding path program 29 times [2020-10-13 04:49:01,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:49:01,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194347215] [2020-10-13 04:49:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:49:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:01,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:01,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:01,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:07,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 04:49:07,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:49:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5917 [2020-10-13 04:49:07,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:49:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 04:49:07,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:49:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:07,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:49:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:07,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:07,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:49:07,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:49:07,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:49:07,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:49:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:49:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:49:07,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1575 trivial. 0 not checked. [2020-10-13 04:49:07,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194347215] [2020-10-13 04:49:07,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:49:07,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:49:07,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641011335] [2020-10-13 04:49:07,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:49:07,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:49:07,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:49:07,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:49:07,661 INFO L87 Difference]: Start difference. First operand 272 states and 280 transitions. Second operand 19 states. [2020-10-13 04:49:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:49:08,379 INFO L93 Difference]: Finished difference Result 496 states and 517 transitions. [2020-10-13 04:49:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:49:08,379 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 267 [2020-10-13 04:49:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:49:08,381 INFO L225 Difference]: With dead ends: 496 [2020-10-13 04:49:08,381 INFO L226 Difference]: Without dead ends: 293 [2020-10-13 04:49:08,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:49:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-13 04:49:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 286. [2020-10-13 04:49:08,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-13 04:49:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 294 transitions. [2020-10-13 04:49:08,392 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 294 transitions. Word has length 267 [2020-10-13 04:49:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:49:08,393 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 294 transitions. [2020-10-13 04:49:08,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:49:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 294 transitions. [2020-10-13 04:49:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-13 04:49:08,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:49:08,395 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 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 04:49:08,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:49:08,395 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:49:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:49:08,396 INFO L82 PathProgramCache]: Analyzing trace with hash 960516096, now seen corresponding path program 30 times [2020-10-13 04:49:08,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:49:08,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159615087] [2020-10-13 04:49:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:49:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:08,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:13,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:13,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-13 04:49:13,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:49:13,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5371 [2020-10-13 04:49:13,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:13,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:49:13,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:49:13,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 04:49:13,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:49:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:14,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:14,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:49:14,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:49:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:49:14,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:49:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:49:14,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:49:14,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2020-10-13 04:49:14,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159615087] [2020-10-13 04:49:14,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:49:14,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:49:14,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590083430] [2020-10-13 04:49:14,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:49:14,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:49:14,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:49:14,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:49:14,128 INFO L87 Difference]: Start difference. First operand 286 states and 294 transitions. Second operand 19 states. [2020-10-13 04:49:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:49:14,313 INFO L93 Difference]: Finished difference Result 538 states and 554 transitions. [2020-10-13 04:49:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 04:49:14,314 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 281 [2020-10-13 04:49:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:49:14,316 INFO L225 Difference]: With dead ends: 538 [2020-10-13 04:49:14,316 INFO L226 Difference]: Without dead ends: 289 [2020-10-13 04:49:14,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:49:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-13 04:49:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2020-10-13 04:49:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-13 04:49:14,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 296 transitions. [2020-10-13 04:49:14,330 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 296 transitions. Word has length 281 [2020-10-13 04:49:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:49:14,330 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 296 transitions. [2020-10-13 04:49:14,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:49:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 296 transitions. [2020-10-13 04:49:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-13 04:49:14,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:49:14,332 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 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 04:49:14,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:49:14,333 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:49:14,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:49:14,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2025610338, now seen corresponding path program 31 times [2020-10-13 04:49:14,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:49:14,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424633516] [2020-10-13 04:49:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:49:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:14,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:14,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:19,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:19,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 04:49:19,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:49:19,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5309 [2020-10-13 04:49:19,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:19,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 04:49:19,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 04:49:19,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 04:49:19,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:49:20,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:49:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:20,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:20,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:49:20,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:49:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:49:20,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:49:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:49:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:49:20,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:49:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2020-10-13 04:49:20,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424633516] [2020-10-13 04:49:20,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:49:20,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 04:49:20,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536072830] [2020-10-13 04:49:20,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 04:49:20,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:49:20,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 04:49:20,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 04:49:20,164 INFO L87 Difference]: Start difference. First operand 288 states and 296 transitions. Second operand 20 states. [2020-10-13 04:49:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:49:20,900 INFO L93 Difference]: Finished difference Result 524 states and 545 transitions. [2020-10-13 04:49:20,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 04:49:20,901 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 283 [2020-10-13 04:49:20,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:49:20,903 INFO L225 Difference]: With dead ends: 524 [2020-10-13 04:49:20,903 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 04:49:20,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 04:49:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 04:49:20,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 302. [2020-10-13 04:49:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-13 04:49:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 310 transitions. [2020-10-13 04:49:20,912 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 310 transitions. Word has length 283 [2020-10-13 04:49:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:49:20,912 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 310 transitions. [2020-10-13 04:49:20,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 04:49:20,912 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 310 transitions. [2020-10-13 04:49:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-13 04:49:20,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:49:20,915 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 1, 1, 1, 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 04:49:20,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:49:20,915 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:49:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:49:20,916 INFO L82 PathProgramCache]: Analyzing trace with hash 327939056, now seen corresponding path program 32 times [2020-10-13 04:49:20,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:49:20,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905068373] [2020-10-13 04:49:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:49:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:21,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:26,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:26,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-13 04:49:26,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:49:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5376 [2020-10-13 04:49:26,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 04:49:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:49:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 04:49:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:49:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:26,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:26,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:49:26,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:49:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:49:26,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:49:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:49:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:49:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 2023 trivial. 0 not checked. [2020-10-13 04:49:26,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905068373] [2020-10-13 04:49:26,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:49:26,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 04:49:26,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852799799] [2020-10-13 04:49:26,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 04:49:26,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:49:26,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 04:49:26,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 04:49:26,624 INFO L87 Difference]: Start difference. First operand 302 states and 310 transitions. Second operand 20 states. [2020-10-13 04:49:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:49:26,798 INFO L93 Difference]: Finished difference Result 568 states and 584 transitions. [2020-10-13 04:49:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 04:49:26,799 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 297 [2020-10-13 04:49:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:49:26,801 INFO L225 Difference]: With dead ends: 568 [2020-10-13 04:49:26,801 INFO L226 Difference]: Without dead ends: 305 [2020-10-13 04:49:26,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 04:49:26,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-13 04:49:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2020-10-13 04:49:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-13 04:49:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 312 transitions. [2020-10-13 04:49:26,811 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 312 transitions. Word has length 297 [2020-10-13 04:49:26,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:49:26,811 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 312 transitions. [2020-10-13 04:49:26,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 04:49:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 312 transitions. [2020-10-13 04:49:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-13 04:49:26,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:49:26,814 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 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 04:49:26,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:49:26,814 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:49:26,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:49:26,814 INFO L82 PathProgramCache]: Analyzing trace with hash -681555058, now seen corresponding path program 33 times [2020-10-13 04:49:26,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:49:26,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6490914] [2020-10-13 04:49:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:49:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:26,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:32,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:32,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-13 04:49:32,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:49:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5428 [2020-10-13 04:49:32,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 04:49:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-13 04:49:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 04:49:32,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:49:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:32,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:32,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:32,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:49:32,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:49:32,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:49:32,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:49:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:49:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:49:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:49:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 2023 trivial. 0 not checked. [2020-10-13 04:49:32,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6490914] [2020-10-13 04:49:32,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:49:32,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 04:49:32,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068976842] [2020-10-13 04:49:32,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 04:49:32,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:49:32,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 04:49:32,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:49:32,641 INFO L87 Difference]: Start difference. First operand 304 states and 312 transitions. Second operand 21 states. [2020-10-13 04:49:33,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:49:33,420 INFO L93 Difference]: Finished difference Result 552 states and 573 transitions. [2020-10-13 04:49:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 04:49:33,421 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 299 [2020-10-13 04:49:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:49:33,423 INFO L225 Difference]: With dead ends: 552 [2020-10-13 04:49:33,424 INFO L226 Difference]: Without dead ends: 325 [2020-10-13 04:49:33,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:49:33,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-13 04:49:33,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 318. [2020-10-13 04:49:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-13 04:49:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 326 transitions. [2020-10-13 04:49:33,433 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 326 transitions. Word has length 299 [2020-10-13 04:49:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:49:33,434 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 326 transitions. [2020-10-13 04:49:33,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 04:49:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 326 transitions. [2020-10-13 04:49:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-13 04:49:33,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:49:33,436 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 1, 1, 1, 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 04:49:33,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:49:33,437 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:49:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:49:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1378908128, now seen corresponding path program 34 times [2020-10-13 04:49:33,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:49:33,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591369160] [2020-10-13 04:49:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:49:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:33,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:33,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:33,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:38,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:38,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 04:49:38,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:49:38,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5444 [2020-10-13 04:49:38,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 04:49:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:49:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 04:49:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:39,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:49:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:39,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:39,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:39,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:49:39,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:49:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:49:39,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:49:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:49:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:49:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2557 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 2268 trivial. 0 not checked. [2020-10-13 04:49:39,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591369160] [2020-10-13 04:49:39,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:49:39,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 04:49:39,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423099242] [2020-10-13 04:49:39,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 04:49:39,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:49:39,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 04:49:39,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:49:39,223 INFO L87 Difference]: Start difference. First operand 318 states and 326 transitions. Second operand 21 states. [2020-10-13 04:49:39,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:49:39,382 INFO L93 Difference]: Finished difference Result 598 states and 614 transitions. [2020-10-13 04:49:39,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 04:49:39,382 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 313 [2020-10-13 04:49:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:49:39,384 INFO L225 Difference]: With dead ends: 598 [2020-10-13 04:49:39,384 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 04:49:39,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:49:39,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 04:49:39,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2020-10-13 04:49:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-13 04:49:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 328 transitions. [2020-10-13 04:49:39,397 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 328 transitions. Word has length 313 [2020-10-13 04:49:39,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:49:39,398 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 328 transitions. [2020-10-13 04:49:39,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 04:49:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 328 transitions. [2020-10-13 04:49:39,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-13 04:49:39,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:49:39,400 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 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 04:49:39,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:49:39,401 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:49:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:49:39,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1900925822, now seen corresponding path program 35 times [2020-10-13 04:49:39,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:49:39,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201859479] [2020-10-13 04:49:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:49:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:39,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:39,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:44,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:44,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 04:49:44,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:49:44,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5303 [2020-10-13 04:49:44,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:44,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 04:49:44,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:49:44,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 04:49:44,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:49:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:45,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:45,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:49:45,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:49:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:49:45,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:49:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:49:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:49:45,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 2268 trivial. 0 not checked. [2020-10-13 04:49:45,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201859479] [2020-10-13 04:49:45,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:49:45,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 04:49:45,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130042836] [2020-10-13 04:49:45,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 04:49:45,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:49:45,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 04:49:45,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 04:49:45,072 INFO L87 Difference]: Start difference. First operand 320 states and 328 transitions. Second operand 22 states. [2020-10-13 04:49:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:49:45,297 INFO L93 Difference]: Finished difference Result 600 states and 616 transitions. [2020-10-13 04:49:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 04:49:45,297 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 315 [2020-10-13 04:49:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:49:45,299 INFO L225 Difference]: With dead ends: 600 [2020-10-13 04:49:45,300 INFO L226 Difference]: Without dead ends: 323 [2020-10-13 04:49:45,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 04:49:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-13 04:49:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322. [2020-10-13 04:49:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-13 04:49:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 330 transitions. [2020-10-13 04:49:45,309 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 330 transitions. Word has length 315 [2020-10-13 04:49:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:49:45,310 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 330 transitions. [2020-10-13 04:49:45,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 04:49:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 330 transitions. [2020-10-13 04:49:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-13 04:49:45,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:49:45,312 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 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 04:49:45,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:49:45,312 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:49:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:49:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1048756124, now seen corresponding path program 36 times [2020-10-13 04:49:45,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:49:45,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115435773] [2020-10-13 04:49:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:49:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:45,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:45,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:45,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:45,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:50,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:50,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 04:49:50,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:49:50,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5418 [2020-10-13 04:49:50,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 04:49:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 04:49:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 04:49:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:49:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:51,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:49:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:49:51,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:49:51,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:49:51,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:49:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:49:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:49:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:49:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:49:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2629 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 2305 trivial. 0 not checked. [2020-10-13 04:49:51,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115435773] [2020-10-13 04:49:51,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:49:51,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 04:49:51,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420208913] [2020-10-13 04:49:51,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 04:49:51,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:49:51,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 04:49:51,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 04:49:51,101 INFO L87 Difference]: Start difference. First operand 322 states and 330 transitions. Second operand 22 states. [2020-10-13 04:49:51,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:49:51,873 INFO L93 Difference]: Finished difference Result 582 states and 603 transitions. [2020-10-13 04:49:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 04:49:51,874 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 317 [2020-10-13 04:49:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:49:51,876 INFO L225 Difference]: With dead ends: 582 [2020-10-13 04:49:51,876 INFO L226 Difference]: Without dead ends: 343 [2020-10-13 04:49:51,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 04:49:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-13 04:49:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 336. [2020-10-13 04:49:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-10-13 04:49:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 344 transitions. [2020-10-13 04:49:51,885 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 344 transitions. Word has length 317 [2020-10-13 04:49:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:49:51,885 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 344 transitions. [2020-10-13 04:49:51,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 04:49:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 344 transitions. [2020-10-13 04:49:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-13 04:49:51,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:49:51,888 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 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 04:49:51,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:49:51,888 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:49:51,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:49:51,889 INFO L82 PathProgramCache]: Analyzing trace with hash -158581906, now seen corresponding path program 37 times [2020-10-13 04:49:51,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:49:51,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136216508] [2020-10-13 04:49:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:49:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:49:51,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:51,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:52,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:49:52,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking...