/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/array-fpi/ms1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:54:14,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:54:14,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:54:14,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:54:14,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:54:14,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:54:14,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:54:14,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:54:14,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:54:14,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:54:14,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:54:14,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:54:14,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:54:14,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:54:14,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:54:14,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:54:14,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:54:14,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:54:14,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:54:14,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:54:14,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:54:14,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:54:14,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:54:14,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:54:14,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:54:14,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:54:14,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:54:14,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:54:14,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:54:14,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:54:14,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:54:14,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:54:14,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:54:14,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:54:14,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:54:14,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:54:14,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:54:14,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:54:14,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:54:14,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:54:14,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:54:14,890 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 [2020-10-29 03:54:14,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:54:14,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:54:14,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:54:14,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:54:14,947 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:54:14,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:54:14,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:54:14,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:54:14,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:54:14,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:54:14,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:54:14,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:54:14,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:54:14,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:54:14,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:54:14,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:54:14,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:54:14,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:54:14,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:54:14,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:54:14,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:54:14,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:54:14,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:54:14,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:54:14,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:54:14,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:54:14,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:54:14,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:54:14,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:54:14,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:54:15,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:54:15,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:54:15,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:54:15,486 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:54:15,487 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:54:15,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1.c [2020-10-29 03:54:15,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d3260fca/c91904d3e8e941b499f72c547fb74ffe/FLAG51efb9c11 [2020-10-29 03:54:16,266 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:54:16,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms1.c [2020-10-29 03:54:16,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d3260fca/c91904d3e8e941b499f72c547fb74ffe/FLAG51efb9c11 [2020-10-29 03:54:16,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d3260fca/c91904d3e8e941b499f72c547fb74ffe [2020-10-29 03:54:16,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:54:16,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:54:16,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:54:16,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:54:16,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:54:16,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:54:16" (1/1) ... [2020-10-29 03:54:16,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291b3448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16, skipping insertion in model container [2020-10-29 03:54:16,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:54:16" (1/1) ... [2020-10-29 03:54:16,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:54:16,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:54:16,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:54:16,822 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:54:16,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:54:16,865 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:54:16,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16 WrapperNode [2020-10-29 03:54:16,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:54:16,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:54:16,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:54:16,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:54:16,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16" (1/1) ... [2020-10-29 03:54:16,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16" (1/1) ... [2020-10-29 03:54:16,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16" (1/1) ... [2020-10-29 03:54:16,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16" (1/1) ... [2020-10-29 03:54:16,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16" (1/1) ... [2020-10-29 03:54:16,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16" (1/1) ... [2020-10-29 03:54:16,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16" (1/1) ... [2020-10-29 03:54:16,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:54:16,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:54:16,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:54:16,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:54:16,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16" (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 [2020-10-29 03:54:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:54:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:54:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:54:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:54:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:54:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:54:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:54:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:54:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:54:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:54:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:54:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:54:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:54:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:54:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:54:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:54:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:54:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:54:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:54:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:54:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:54:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:54:17,468 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:54:17,468 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:54:17,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:54:17 BoogieIcfgContainer [2020-10-29 03:54:17,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:54:17,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:54:17,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:54:17,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:54:17,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:54:16" (1/3) ... [2020-10-29 03:54:17,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be605c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:54:17, skipping insertion in model container [2020-10-29 03:54:17,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:16" (2/3) ... [2020-10-29 03:54:17,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be605c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:54:17, skipping insertion in model container [2020-10-29 03:54:17,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:54:17" (3/3) ... [2020-10-29 03:54:17,494 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1.c [2020-10-29 03:54:17,516 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:54:17,523 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:54:17,538 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:54:17,584 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:54:17,584 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:54:17,584 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:54:17,584 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:54:17,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:54:17,585 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:54:17,585 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:54:17,585 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:54:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-29 03:54:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:54:17,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:17,623 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] [2020-10-29 03:54:17,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:17,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-29 03:54:17,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:17,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226048583] [2020-10-29 03:54:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:18,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:54:18,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:54:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-29 03:54:18,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:18,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:54:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:54:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:54:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:54:18,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:18,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:18,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:18,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:18,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:54:18,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:18,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:18,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:18,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:18,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:18,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:54:18,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:18,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:18,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:18,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:18,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:18,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:18,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226048583] [2020-10-29 03:54:18,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:54:18,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:54:18,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366949966] [2020-10-29 03:54:18,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:54:18,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:18,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:54:18,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:54:18,656 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2020-10-29 03:54:18,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:18,865 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2020-10-29 03:54:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:54:18,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 03:54:18,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:18,876 INFO L225 Difference]: With dead ends: 65 [2020-10-29 03:54:18,876 INFO L226 Difference]: Without dead ends: 28 [2020-10-29 03:54:18,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:54:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-29 03:54:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-29 03:54:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 03:54:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-29 03:54:18,928 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-10-29 03:54:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:18,928 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-29 03:54:18,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:54:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-29 03:54:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:54:18,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:18,930 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] [2020-10-29 03:54:18,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:54:18,931 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:18,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-29 03:54:18,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:18,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195302536] [2020-10-29 03:54:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:19,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:54:19,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:19,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 03:54:19,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:19,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:19,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:54:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:54:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:54:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 03:54:19,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:19,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:19,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:54:19,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:19,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:19,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:19,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:19,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:19,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:19,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:19,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:54:19,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195302536] [2020-10-29 03:54:19,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:54:19,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 03:54:19,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673745810] [2020-10-29 03:54:19,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:54:19,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:19,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:54:19,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:54:19,397 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2020-10-29 03:54:19,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:19,596 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-29 03:54:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:54:19,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-29 03:54:19,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:19,598 INFO L225 Difference]: With dead ends: 38 [2020-10-29 03:54:19,599 INFO L226 Difference]: Without dead ends: 31 [2020-10-29 03:54:19,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:54:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-29 03:54:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-29 03:54:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:54:19,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-29 03:54:19,609 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 27 [2020-10-29 03:54:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:19,609 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-29 03:54:19,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:54:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-29 03:54:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:54:19,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:19,611 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] [2020-10-29 03:54:19,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:54:19,611 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:19,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1995813591, now seen corresponding path program 1 times [2020-10-29 03:54:19,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:19,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45764680] [2020-10-29 03:54:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:19,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:54:20,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:54:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-10-29 03:54:20,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:54:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:54:20,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:54:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:20,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:20,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:20,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:20,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:54:20,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:20,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:20,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:20,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:20,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:20,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45764680] [2020-10-29 03:54:20,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:20,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:54:20,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74127882] [2020-10-29 03:54:20,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:54:20,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:20,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:54:20,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:54:20,733 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 10 states. [2020-10-29 03:54:21,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:21,084 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-10-29 03:54:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:54:21,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-29 03:54:21,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:21,088 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:54:21,088 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:54:21,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:54:21,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:54:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-29 03:54:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:54:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-29 03:54:21,105 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 27 [2020-10-29 03:54:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:21,106 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-29 03:54:21,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:54:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-29 03:54:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:54:21,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:21,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:21,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:54:21,108 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:21,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1079019474, now seen corresponding path program 1 times [2020-10-29 03:54:21,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:21,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247565853] [2020-10-29 03:54:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:21,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:21,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:22,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:54:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1370 [2020-10-29 03:54:22,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:22,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:54:22,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:22,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:54:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:22,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:22,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:22,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:22,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:22,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:22,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:22,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:22,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:22,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:22,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:22,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:22,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:22,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:22,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:22,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:22,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247565853] [2020-10-29 03:54:22,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:22,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:54:22,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128852269] [2020-10-29 03:54:22,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:54:22,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:22,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:54:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:54:22,746 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 12 states. [2020-10-29 03:54:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:23,323 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-29 03:54:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:54:23,324 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-29 03:54:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:23,326 INFO L225 Difference]: With dead ends: 54 [2020-10-29 03:54:23,326 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:54:23,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:54:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:54:23,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-29 03:54:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 03:54:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-29 03:54:23,342 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 32 [2020-10-29 03:54:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:23,342 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-29 03:54:23,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:54:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-29 03:54:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:54:23,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:23,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:23,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:54:23,347 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:23,347 INFO L82 PathProgramCache]: Analyzing trace with hash -433053015, now seen corresponding path program 2 times [2020-10-29 03:54:23,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:23,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735477517] [2020-10-29 03:54:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:23,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:24,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:26,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:28,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:28,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:54:28,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:54:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:54:28,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:28,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:54:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:54:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:54:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:28,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:28,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:28,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:54:28,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:28,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:28,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:28,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:54:28,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735477517] [2020-10-29 03:54:28,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:28,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:54:28,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565369540] [2020-10-29 03:54:28,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:54:28,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:28,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:54:28,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:54:28,658 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 13 states. [2020-10-29 03:54:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:29,184 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-29 03:54:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:54:29,184 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-29 03:54:29,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:29,186 INFO L225 Difference]: With dead ends: 59 [2020-10-29 03:54:29,186 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:54:29,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:54:29,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:54:29,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-29 03:54:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:54:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-29 03:54:29,195 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 35 [2020-10-29 03:54:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:29,195 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-29 03:54:29,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:54:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-29 03:54:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:54:29,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:29,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:29,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:54:29,197 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:29,198 INFO L82 PathProgramCache]: Analyzing trace with hash -639202741, now seen corresponding path program 3 times [2020-10-29 03:54:29,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:29,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671911152] [2020-10-29 03:54:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:29,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:29,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:54:31,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:54:31,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2242 [2020-10-29 03:54:31,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:54:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:54:31,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:31,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:54:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:31,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:31,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:31,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:31,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:31,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:31,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:31,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671911152] [2020-10-29 03:54:31,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:31,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:54:31,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706301887] [2020-10-29 03:54:31,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:54:31,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:31,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:54:31,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:54:31,921 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 16 states. [2020-10-29 03:54:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:32,700 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-29 03:54:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:54:32,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-29 03:54:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:32,703 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:54:32,703 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 03:54:32,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:54:32,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 03:54:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-10-29 03:54:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:54:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-29 03:54:32,718 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 37 [2020-10-29 03:54:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:32,719 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-29 03:54:32,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:54:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-29 03:54:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:54:32,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:32,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-29 03:54:32,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:54:32,721 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:32,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:32,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1797980308, now seen corresponding path program 4 times [2020-10-29 03:54:32,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:32,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515484214] [2020-10-29 03:54:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:32,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:37,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:37,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:54:37,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:54:37,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:54:37,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:37,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:54:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:54:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:38,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:38,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:38,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:54:38,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:38,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:38,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:38,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:38,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:38,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:38,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:38,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:38,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:38,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:54:38,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515484214] [2020-10-29 03:54:38,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:38,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:54:38,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674633096] [2020-10-29 03:54:38,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:54:38,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:38,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:54:38,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:54:38,075 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 14 states. [2020-10-29 03:54:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:38,859 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-29 03:54:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:54:38,860 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-10-29 03:54:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:38,861 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:54:38,861 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 03:54:38,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:54:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 03:54:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-10-29 03:54:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:54:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-29 03:54:38,875 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2020-10-29 03:54:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:38,876 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-29 03:54:38,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:54:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-29 03:54:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:54:38,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:38,880 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:38,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:54:38,880 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:38,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:38,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1517817098, now seen corresponding path program 5 times [2020-10-29 03:54:38,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:38,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215149383] [2020-10-29 03:54:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:43,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:43,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:54:43,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:54:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4380 [2020-10-29 03:54:43,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:43,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:54:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:43,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:54:43,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:43,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:43,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:43,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:43,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:43,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:43,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:43,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:43,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:43,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:43,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:43,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:43,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:43,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:43,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:43,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:43,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215149383] [2020-10-29 03:54:43,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:43,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:54:43,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700187747] [2020-10-29 03:54:43,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:54:43,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:43,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:54:43,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:54:43,963 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 20 states. [2020-10-29 03:54:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:45,129 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2020-10-29 03:54:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:54:45,130 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 42 [2020-10-29 03:54:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:45,131 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:54:45,131 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:54:45,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:54:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:54:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-29 03:54:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 03:54:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-29 03:54:45,140 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 42 [2020-10-29 03:54:45,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:45,145 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-29 03:54:45,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:54:45,145 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-29 03:54:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:54:45,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:45,146 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-10-29 03:54:45,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:54:45,147 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:45,150 INFO L82 PathProgramCache]: Analyzing trace with hash 974327885, now seen corresponding path program 6 times [2020-10-29 03:54:45,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:45,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084869646] [2020-10-29 03:54:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:50,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:50,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:54:50,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:54:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:54:50,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:50,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:54:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:54:50,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:50,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:50,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:50,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:50,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:50,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:50,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:50,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:50,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:50,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:50,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:50,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:50,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:50,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:50,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:54:50,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084869646] [2020-10-29 03:54:50,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:50,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:54:50,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109574191] [2020-10-29 03:54:50,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:54:50,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:50,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:54:50,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:54:50,493 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 16 states. [2020-10-29 03:54:51,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:51,566 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-29 03:54:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:54:51,567 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 03:54:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:51,568 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:54:51,569 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 03:54:51,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:54:51,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 03:54:51,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2020-10-29 03:54:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:54:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-29 03:54:51,581 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 45 [2020-10-29 03:54:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:51,581 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-29 03:54:51,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:54:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-29 03:54:51,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:54:51,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:51,582 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:51,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:54:51,583 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:51,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1091709585, now seen corresponding path program 7 times [2020-10-29 03:54:51,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:51,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650186738] [2020-10-29 03:54:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:51,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:52,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:56,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:54:56,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:54:56,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:54:56,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:56,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:54:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:56,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:54:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:57,508 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2020-10-29 03:54:58,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:58,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:54:58,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:58,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:58,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:58,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:58,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:58,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:58,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:58,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:58,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:58,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650186738] [2020-10-29 03:54:58,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:58,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:54:58,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071337204] [2020-10-29 03:54:58,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:54:58,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:58,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:54:58,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:54:58,070 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 24 states. [2020-10-29 03:54:59,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:59,587 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2020-10-29 03:54:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:54:59,588 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 47 [2020-10-29 03:54:59,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:59,590 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:54:59,590 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 03:54:59,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:54:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 03:54:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-29 03:54:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:54:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-29 03:54:59,601 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2020-10-29 03:54:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:59,601 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-29 03:54:59,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:54:59,602 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-29 03:54:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:54:59,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:59,603 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-29 03:54:59,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:54:59,603 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:59,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:59,604 INFO L82 PathProgramCache]: Analyzing trace with hash -527027768, now seen corresponding path program 8 times [2020-10-29 03:54:59,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:59,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414516423] [2020-10-29 03:54:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:04,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:04,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:55:04,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:55:04,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:55:04,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:04,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:55:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:04,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:55:04,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:04,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:04,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:04,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:55:04,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:04,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:04,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:04,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:04,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:04,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:04,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:04,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:04,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:04,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:04,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414516423] [2020-10-29 03:55:04,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:04,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:55:04,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284106181] [2020-10-29 03:55:04,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:55:04,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:04,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:55:04,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:55:04,836 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 16 states. [2020-10-29 03:55:05,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:05,234 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-29 03:55:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:55:05,235 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-29 03:55:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:05,236 INFO L225 Difference]: With dead ends: 97 [2020-10-29 03:55:05,236 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:55:05,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:55:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:55:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-29 03:55:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:55:05,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-29 03:55:05,260 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2020-10-29 03:55:05,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:05,261 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-29 03:55:05,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:55:05,261 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-29 03:55:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:55:05,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:05,267 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:05,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:55:05,268 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:05,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:05,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1196207642, now seen corresponding path program 9 times [2020-10-29 03:55:05,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:05,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900598866] [2020-10-29 03:55:05,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:08,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:09,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:10,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:10,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:55:10,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:55:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:55:10,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:10,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:55:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:55:10,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:11,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:11,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:11,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:11,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:11,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:11,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:11,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:11,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:11,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:11,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:11,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:11,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:11,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:11,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900598866] [2020-10-29 03:55:11,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:11,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:55:11,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231968425] [2020-10-29 03:55:11,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:55:11,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:11,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:55:11,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:55:11,657 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 28 states. [2020-10-29 03:55:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:13,726 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2020-10-29 03:55:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:55:13,727 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2020-10-29 03:55:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:13,727 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:55:13,728 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:55:13,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:55:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:55:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-29 03:55:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 03:55:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-29 03:55:13,739 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 52 [2020-10-29 03:55:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:13,739 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-29 03:55:13,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:55:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-29 03:55:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:55:13,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:13,741 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 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] [2020-10-29 03:55:13,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:55:13,741 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash 222645745, now seen corresponding path program 10 times [2020-10-29 03:55:13,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:13,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137643832] [2020-10-29 03:55:13,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:14,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:16,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:18,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:18,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 03:55:18,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:55:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:55:18,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:18,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:55:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:55:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:19,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:19,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:19,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:19,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:19,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:19,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:19,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137643832] [2020-10-29 03:55:19,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:19,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:55:19,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323296990] [2020-10-29 03:55:19,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:55:19,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:19,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:55:19,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:55:19,048 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 18 states. [2020-10-29 03:55:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:19,536 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2020-10-29 03:55:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:55:19,537 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 55 [2020-10-29 03:55:19,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:19,538 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:55:19,538 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:55:19,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:55:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:55:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-10-29 03:55:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 03:55:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-29 03:55:19,549 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 55 [2020-10-29 03:55:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:19,550 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-29 03:55:19,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:55:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-29 03:55:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:55:19,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:19,551 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:19,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:55:19,551 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1920102253, now seen corresponding path program 11 times [2020-10-29 03:55:19,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:19,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089352768] [2020-10-29 03:55:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:20,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:22,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:23,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:24,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:24,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 03:55:24,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:55:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:55:24,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:24,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:55:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 03:55:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:26,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:55:26,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:26,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:26,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:26,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:26,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089352768] [2020-10-29 03:55:26,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:26,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:55:26,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264235043] [2020-10-29 03:55:26,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:55:26,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:26,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:55:26,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:55:26,311 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 32 states. [2020-10-29 03:55:27,418 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-10-29 03:55:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:28,830 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-10-29 03:55:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:55:28,831 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 57 [2020-10-29 03:55:28,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:28,832 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:55:28,832 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:55:28,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=231, Invalid=1749, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:55:28,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:55:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-29 03:55:28,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:55:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-29 03:55:28,842 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 57 [2020-10-29 03:55:28,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:28,843 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-29 03:55:28,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:55:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-29 03:55:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 03:55:28,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:28,844 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-10-29 03:55:28,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:55:28,844 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:28,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:28,845 INFO L82 PathProgramCache]: Analyzing trace with hash -290917340, now seen corresponding path program 12 times [2020-10-29 03:55:28,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:28,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444203696] [2020-10-29 03:55:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:28,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:29,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:29,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:30,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:30,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:33,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:33,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:55:33,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:55:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:55:33,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:33,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:55:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:55:33,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:34,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:34,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:34,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:34,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:34,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:34,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:34,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:34,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:34,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:34,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:34,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:34,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444203696] [2020-10-29 03:55:34,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:34,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:55:34,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426236947] [2020-10-29 03:55:34,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:55:34,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:34,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:55:34,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:55:34,248 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 20 states. [2020-10-29 03:55:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:34,763 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-29 03:55:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:55:34,763 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2020-10-29 03:55:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:34,764 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:55:34,764 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:55:34,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:55:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:55:34,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2020-10-29 03:55:34,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:55:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-29 03:55:34,775 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2020-10-29 03:55:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:34,775 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-29 03:55:34,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:55:34,776 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-29 03:55:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:55:34,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:34,777 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:34,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:55:34,777 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:34,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:34,778 INFO L82 PathProgramCache]: Analyzing trace with hash 262866626, now seen corresponding path program 13 times [2020-10-29 03:55:34,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:34,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857089177] [2020-10-29 03:55:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:36,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:39,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:39,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:39,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:55:39,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:55:39,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:55:39,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:39,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:55:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:55:39,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:42,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:42,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:42,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:42,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:42,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:42,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:42,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:42,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:42,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:42,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:42,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:42,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:42,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857089177] [2020-10-29 03:55:42,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:42,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:55:42,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214771193] [2020-10-29 03:55:42,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:55:42,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:42,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:55:42,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:55:42,831 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 36 states. [2020-10-29 03:55:44,352 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-10-29 03:55:44,584 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-29 03:55:44,802 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-29 03:55:45,045 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-10-29 03:55:45,285 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-29 03:55:45,774 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-29 03:55:46,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:46,438 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2020-10-29 03:55:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:55:46,439 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 62 [2020-10-29 03:55:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:46,440 INFO L225 Difference]: With dead ends: 102 [2020-10-29 03:55:46,440 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:55:46,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=279, Invalid=2171, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:55:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:55:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-29 03:55:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:55:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-29 03:55:46,449 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 62 [2020-10-29 03:55:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:46,450 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-29 03:55:46,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:55:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-29 03:55:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:55:46,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:46,451 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-29 03:55:46,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:55:46,451 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:46,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1859839083, now seen corresponding path program 14 times [2020-10-29 03:55:46,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:46,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606804172] [2020-10-29 03:55:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:46,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:46,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:46,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:46,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:48,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:48,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:51,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:51,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 03:55:51,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:55:51,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:55:51,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:51,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:55:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:55:51,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:51,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:51,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:51,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:51,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:51,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:51,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:51,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:51,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:51,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:51,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:51,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:51,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:51,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 117 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:51,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606804172] [2020-10-29 03:55:51,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:51,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:55:51,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862577890] [2020-10-29 03:55:51,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:55:51,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:51,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:55:51,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:55:51,815 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 22 states. [2020-10-29 03:55:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:52,446 INFO L93 Difference]: Finished difference Result 130 states and 135 transitions. [2020-10-29 03:55:52,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:55:52,447 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-10-29 03:55:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:52,448 INFO L225 Difference]: With dead ends: 130 [2020-10-29 03:55:52,448 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 03:55:52,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=758, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:55:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 03:55:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2020-10-29 03:55:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 03:55:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-10-29 03:55:52,458 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 65 [2020-10-29 03:55:52,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:52,458 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-10-29 03:55:52,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:55:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-10-29 03:55:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:55:52,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:52,459 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:52,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:55:52,460 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2042889289, now seen corresponding path program 15 times [2020-10-29 03:55:52,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:52,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758807973] [2020-10-29 03:55:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:57,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:57,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:55:57,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:55:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 03:55:57,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:57,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:55:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 03:55:57,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:00,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:00,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:00,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:00,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:00,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:00,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:56:00,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758807973] [2020-10-29 03:56:00,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:00,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:56:00,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676608831] [2020-10-29 03:56:00,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:56:00,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:00,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:56:00,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:56:00,566 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 40 states. [2020-10-29 03:56:02,165 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 55 [2020-10-29 03:56:02,398 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2020-10-29 03:56:02,637 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2020-10-29 03:56:02,881 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-10-29 03:56:03,364 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-29 03:56:04,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:04,607 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2020-10-29 03:56:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:56:04,608 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 67 [2020-10-29 03:56:04,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:04,609 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:56:04,609 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 03:56:04,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=305, Invalid=2665, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:56:04,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 03:56:04,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-29 03:56:04,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:56:04,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-29 03:56:04,618 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 67 [2020-10-29 03:56:04,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:04,618 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-29 03:56:04,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:56:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-29 03:56:04,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:56:04,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:04,619 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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] [2020-10-29 03:56:04,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:56:04,619 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:04,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:04,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1072629376, now seen corresponding path program 16 times [2020-10-29 03:56:04,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:04,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718368896] [2020-10-29 03:56:04,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:09,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:09,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:56:09,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 03:56:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:56:09,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:09,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:56:09,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:09,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 03:56:09,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:10,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:10,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:10,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:10,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:56:10,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:10,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:10,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:10,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:10,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:10,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:10,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:10,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:10,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 145 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:56:10,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718368896] [2020-10-29 03:56:10,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:10,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:56:10,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265141852] [2020-10-29 03:56:10,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:56:10,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:10,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:56:10,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:56:10,122 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 24 states. [2020-10-29 03:56:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:10,796 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2020-10-29 03:56:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:56:10,797 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 70 [2020-10-29 03:56:10,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:10,798 INFO L225 Difference]: With dead ends: 141 [2020-10-29 03:56:10,798 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:56:10,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:56:10,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:56:10,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2020-10-29 03:56:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:56:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-29 03:56:10,807 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2020-10-29 03:56:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:10,808 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-29 03:56:10,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:56:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-29 03:56:10,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:56:10,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:10,809 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:10,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:56:10,809 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:10,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:10,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2144801890, now seen corresponding path program 17 times [2020-10-29 03:56:10,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:10,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067954483] [2020-10-29 03:56:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:14,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:15,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:15,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:56:15,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:56:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:56:15,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:15,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 03:56:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:15,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:56:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,361 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-29 03:56:18,250 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-29 03:56:20,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:20,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:20,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:20,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:20,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:20,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:20,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:20,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:20,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:56:20,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:20,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:20,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:56:20,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067954483] [2020-10-29 03:56:20,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:20,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:56:20,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960531373] [2020-10-29 03:56:20,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:56:20,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:20,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:56:20,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1671, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:56:20,398 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 44 states. [2020-10-29 03:56:21,648 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-29 03:56:22,227 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2020-10-29 03:56:22,549 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2020-10-29 03:56:22,841 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-29 03:56:23,141 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2020-10-29 03:56:23,426 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-10-29 03:56:23,731 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-29 03:56:24,040 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-10-29 03:56:24,333 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-29 03:56:24,661 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-29 03:56:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:25,541 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2020-10-29 03:56:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:56:25,542 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 72 [2020-10-29 03:56:25,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:25,543 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:56:25,543 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:56:25,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=395, Invalid=3027, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:56:25,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:56:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-29 03:56:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 03:56:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-10-29 03:56:25,554 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 72 [2020-10-29 03:56:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:25,554 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-10-29 03:56:25,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:56:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-10-29 03:56:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:56:25,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:25,555 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 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] [2020-10-29 03:56:25,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:56:25,556 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:25,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1536211257, now seen corresponding path program 18 times [2020-10-29 03:56:25,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:25,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918111392] [2020-10-29 03:56:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:26,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:30,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:30,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 03:56:30,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:56:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:56:30,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:30,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:56:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:56:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:31,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:31,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:31,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:31,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:56:31,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:31,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:31,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:31,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:31,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:31,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:31,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:31,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:31,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:31,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 176 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:56:31,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918111392] [2020-10-29 03:56:31,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:31,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:56:31,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067650963] [2020-10-29 03:56:31,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:56:31,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:31,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:56:31,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:56:31,083 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 26 states. [2020-10-29 03:56:31,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:31,946 INFO L93 Difference]: Finished difference Result 152 states and 157 transitions. [2020-10-29 03:56:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:56:31,947 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 75 [2020-10-29 03:56:31,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:31,948 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:56:31,948 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 03:56:31,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=328, Invalid=1078, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:56:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 03:56:31,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2020-10-29 03:56:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:56:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-29 03:56:31,957 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 75 [2020-10-29 03:56:31,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:31,958 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-29 03:56:31,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:56:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-29 03:56:31,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 03:56:31,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:31,959 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:31,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:56:31,959 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:31,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:31,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1341085403, now seen corresponding path program 19 times [2020-10-29 03:56:31,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:31,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733130322] [2020-10-29 03:56:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:36,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 03:56:36,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:56:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:56:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:36,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 03:56:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 03:56:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:38,921 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-29 03:56:39,089 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-29 03:56:39,268 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-29 03:56:39,706 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-10-29 03:56:40,093 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-29 03:56:42,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:42,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:42,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:42,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:42,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:42,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:42,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:42,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:56:42,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:42,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:42,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:56:42,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733130322] [2020-10-29 03:56:42,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:42,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:56:42,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137293947] [2020-10-29 03:56:42,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:56:42,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:42,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:56:42,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1997, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:56:42,813 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 48 states. [2020-10-29 03:56:43,965 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-10-29 03:56:44,610 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2020-10-29 03:56:44,979 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2020-10-29 03:56:45,307 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2020-10-29 03:56:45,672 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2020-10-29 03:56:46,013 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2020-10-29 03:56:46,335 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-29 03:56:46,640 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2020-10-29 03:56:46,950 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-10-29 03:56:47,274 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-29 03:56:47,621 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-29 03:56:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:48,489 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2020-10-29 03:56:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:56:48,492 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 77 [2020-10-29 03:56:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:48,493 INFO L225 Difference]: With dead ends: 126 [2020-10-29 03:56:48,494 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 03:56:48,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=459, Invalid=3573, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 03:56:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 03:56:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-10-29 03:56:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:56:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-10-29 03:56:48,504 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 77 [2020-10-29 03:56:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:48,504 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-10-29 03:56:48,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:56:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-10-29 03:56:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:56:48,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:48,506 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2020-10-29 03:56:48,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:56:48,506 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:48,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:48,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1590307036, now seen corresponding path program 20 times [2020-10-29 03:56:48,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:48,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682872161] [2020-10-29 03:56:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:48,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:49,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:49,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:49,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:50,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:53,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:53,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:56:53,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 03:56:53,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:56:53,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:53,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:56:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:53,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:56:53,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:54,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:54,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:54,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:54,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:56:54,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:54,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:54,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:54,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:54,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:54,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:54,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:54,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:54,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 210 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:56:54,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682872161] [2020-10-29 03:56:54,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:54,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:56:54,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095956175] [2020-10-29 03:56:54,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:56:54,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:54,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:56:54,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:56:54,148 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 28 states. [2020-10-29 03:56:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:55,111 INFO L93 Difference]: Finished difference Result 163 states and 168 transitions. [2020-10-29 03:56:55,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:56:55,112 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 80 [2020-10-29 03:56:55,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:55,113 INFO L225 Difference]: With dead ends: 163 [2020-10-29 03:56:55,113 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:56:55,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:56:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:56:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-10-29 03:56:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:56:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-29 03:56:55,121 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2020-10-29 03:56:55,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:55,122 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-29 03:56:55,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:56:55,122 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-29 03:56:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:56:55,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:55,123 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:55,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:56:55,123 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:55,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:55,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1920385146, now seen corresponding path program 21 times [2020-10-29 03:56:55,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:55,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453589431] [2020-10-29 03:56:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:59,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:00,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:00,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:57:00,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:57:00,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5392 [2020-10-29 03:57:00,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:00,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-29 03:57:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:57:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:02,697 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-29 03:57:03,114 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-29 03:57:03,524 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-29 03:57:03,925 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-29 03:57:06,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:06,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:06,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:06,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:06,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:57:06,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:06,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:06,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:06,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:06,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:06,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:06,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:06,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:06,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:06,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:06,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:57:06,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:06,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:06,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:57:07,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453589431] [2020-10-29 03:57:07,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:07,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 03:57:07,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677412140] [2020-10-29 03:57:07,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 03:57:07,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:07,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 03:57:07,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2354, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:57:07,031 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 52 states. [2020-10-29 03:57:09,046 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-29 03:57:09,874 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-10-29 03:57:10,182 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2020-10-29 03:57:10,577 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2020-10-29 03:57:10,980 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2020-10-29 03:57:11,387 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2020-10-29 03:57:11,783 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-29 03:57:12,173 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-29 03:57:12,620 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2020-10-29 03:57:13,047 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-29 03:57:13,494 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-29 03:57:13,931 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-10-29 03:57:14,407 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2020-10-29 03:57:15,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:15,572 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2020-10-29 03:57:15,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:57:15,574 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 82 [2020-10-29 03:57:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:15,575 INFO L225 Difference]: With dead ends: 134 [2020-10-29 03:57:15,575 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:57:15,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=542, Invalid=4288, Unknown=0, NotChecked=0, Total=4830 [2020-10-29 03:57:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:57:15,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-29 03:57:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 03:57:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-10-29 03:57:15,588 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 82 [2020-10-29 03:57:15,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:15,588 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-10-29 03:57:15,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 03:57:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-10-29 03:57:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:57:15,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:15,589 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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] [2020-10-29 03:57:15,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:57:15,590 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:15,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1964611875, now seen corresponding path program 22 times [2020-10-29 03:57:15,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:15,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492071332] [2020-10-29 03:57:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:15,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:15,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:16,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:16,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:20,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:20,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 03:57:20,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:57:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:57:20,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:20,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:57:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:57:20,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:21,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:21,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:57:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:21,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:21,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:21,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:21,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:21,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:21,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:57:21,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:21,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:21,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 247 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:57:21,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492071332] [2020-10-29 03:57:21,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:21,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:57:21,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213258036] [2020-10-29 03:57:21,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:57:21,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:21,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:57:21,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:57:21,369 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 30 states. [2020-10-29 03:57:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:22,596 INFO L93 Difference]: Finished difference Result 174 states and 179 transitions. [2020-10-29 03:57:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:57:22,597 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 85 [2020-10-29 03:57:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:22,598 INFO L225 Difference]: With dead ends: 174 [2020-10-29 03:57:22,599 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:57:22,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=438, Invalid=1454, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:57:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:57:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2020-10-29 03:57:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 03:57:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-10-29 03:57:22,609 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 85 [2020-10-29 03:57:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:22,610 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-10-29 03:57:22,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:57:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-10-29 03:57:22,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:57:22,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:22,610 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:22,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:57:22,611 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:22,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:22,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1675763201, now seen corresponding path program 23 times [2020-10-29 03:57:22,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:22,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597617426] [2020-10-29 03:57:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:28,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:28,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 03:57:28,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:57:28,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5901 [2020-10-29 03:57:28,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:28,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-29 03:57:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:28,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 03:57:28,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:29,902 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-29 03:57:30,086 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-29 03:57:30,294 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-10-29 03:57:30,523 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-10-29 03:57:30,774 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2020-10-29 03:57:31,057 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-10-29 03:57:31,359 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2020-10-29 03:57:31,708 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2020-10-29 03:57:32,078 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2020-10-29 03:57:32,489 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2020-10-29 03:57:32,890 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2020-10-29 03:57:33,387 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2020-10-29 03:57:33,908 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2020-10-29 03:57:34,476 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 65 [2020-10-29 03:57:35,028 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 65 [2020-10-29 03:57:35,414 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 59 [2020-10-29 03:57:35,800 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2020-10-29 03:57:36,305 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 69 [2020-10-29 03:57:36,687 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 63 [2020-10-29 03:57:37,040 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2020-10-29 03:57:37,302 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-29 03:57:37,589 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-29 03:57:37,933 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-10-29 03:57:38,210 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-29 03:57:38,540 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-29 03:57:38,795 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-29 03:57:39,106 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-29 03:57:39,349 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-29 03:57:39,636 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-10-29 03:57:40,148 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-29 03:57:41,564 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-29 03:57:42,045 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-10-29 03:57:43,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:43,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:43,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:43,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:57:43,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:43,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:43,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:43,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:43,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:43,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:43,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:43,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:57:43,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:43,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 81 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:57:43,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597617426] [2020-10-29 03:57:43,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:43,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-29 03:57:43,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507143198] [2020-10-29 03:57:43,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-29 03:57:43,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:43,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-29 03:57:43,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=3054, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:57:43,327 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 59 states. [2020-10-29 03:57:44,432 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-29 03:57:44,849 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-29 03:57:45,476 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-29 03:57:46,124 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-29 03:57:46,799 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-29 03:57:47,480 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-29 03:57:48,187 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-29 03:57:48,488 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-29 03:57:48,965 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-29 03:57:49,299 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-29 03:57:49,775 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2020-10-29 03:57:50,111 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-29 03:57:50,592 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 63 [2020-10-29 03:57:51,097 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2020-10-29 03:57:52,841 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 202 DAG size of output: 162 [2020-10-29 03:57:53,562 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-10-29 03:57:53,902 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2020-10-29 03:57:54,299 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2020-10-29 03:57:54,700 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75