/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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-industry-pattern/array_range_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:22:50,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:22:50,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:22:50,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:22:50,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:22:50,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:22:50,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:22:50,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:22:50,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:22:50,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:22:50,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:22:50,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:22:50,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:22:50,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:22:50,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:22:50,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:22:50,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:22:50,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:22:50,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:22:50,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:22:50,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:22:50,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:22:50,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:22:50,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:22:50,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:22:50,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:22:50,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:22:50,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:22:50,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:22:50,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:22:50,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:22:50,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:22:50,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:22:50,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:22:50,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:22:50,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:22:50,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:22:50,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:22:50,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:22:50,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:22:50,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:22:50,561 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 [2020-10-28 09:22:50,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:22:50,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:22:50,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:22:50,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:22:50,589 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:22:50,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:22:50,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:22:50,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:22:50,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:22:50,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:22:50,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:22:50,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:22:50,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:22:50,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:22:50,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:22:50,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:22:50,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:22:50,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:22:50,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:22:50,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:22:50,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:22:50,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:22:50,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:22:50,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:22:50,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:22:50,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:22:50,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:22:50,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:22:50,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:22:50,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:22:50,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:22:50,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:22:50,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:22:50,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:22:50,989 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:22:50,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_range_init.i [2020-10-28 09:22:51,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2bb9534b/053dfbc51c14434ea0d225ad950df177/FLAG4f9fbc47d [2020-10-28 09:22:51,655 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:22:51,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_range_init.i [2020-10-28 09:22:51,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2bb9534b/053dfbc51c14434ea0d225ad950df177/FLAG4f9fbc47d [2020-10-28 09:22:52,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2bb9534b/053dfbc51c14434ea0d225ad950df177 [2020-10-28 09:22:52,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:22:52,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:22:52,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:22:52,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:22:52,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:22:52,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:22:52" (1/1) ... [2020-10-28 09:22:52,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1eee9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52, skipping insertion in model container [2020-10-28 09:22:52,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:22:52" (1/1) ... [2020-10-28 09:22:52,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:22:52,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:22:52,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:22:52,258 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:22:52,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:22:52,295 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:22:52,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52 WrapperNode [2020-10-28 09:22:52,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:22:52,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:22:52,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:22:52,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:22:52,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52" (1/1) ... [2020-10-28 09:22:52,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52" (1/1) ... [2020-10-28 09:22:52,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52" (1/1) ... [2020-10-28 09:22:52,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52" (1/1) ... [2020-10-28 09:22:52,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52" (1/1) ... [2020-10-28 09:22:52,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52" (1/1) ... [2020-10-28 09:22:52,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52" (1/1) ... [2020-10-28 09:22:52,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:22:52,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:22:52,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:22:52,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:22:52,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52" (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 [2020-10-28 09:22:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:22:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:22:52,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:22:52,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:22:52,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:22:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:22:52,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:22:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:22:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:22:52,432 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:22:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:22:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:22:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:22:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:22:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:22:52,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:22:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:22:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:22:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:22:52,866 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:22:52,866 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:22:52,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:22:52 BoogieIcfgContainer [2020-10-28 09:22:52,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:22:52,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:22:52,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:22:52,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:22:52,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:22:52" (1/3) ... [2020-10-28 09:22:52,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea0270a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:22:52, skipping insertion in model container [2020-10-28 09:22:52,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:52" (2/3) ... [2020-10-28 09:22:52,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea0270a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:22:52, skipping insertion in model container [2020-10-28 09:22:52,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:22:52" (3/3) ... [2020-10-28 09:22:52,877 INFO L111 eAbstractionObserver]: Analyzing ICFG array_range_init.i [2020-10-28 09:22:52,889 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:22:52,894 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:22:52,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:22:52,964 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:22:52,965 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:22:52,965 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:22:52,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:22:52,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:22:52,966 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:22:52,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:22:52,966 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:22:52,985 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-28 09:22:52,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 09:22:52,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:52,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:52,996 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:53,002 INFO L82 PathProgramCache]: Analyzing trace with hash -291234818, now seen corresponding path program 1 times [2020-10-28 09:22:53,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:53,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128063391] [2020-10-28 09:22:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:53,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:53,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:22:53,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:53,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 09:22:53,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:53,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:22:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 09:22:53,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:53,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:53,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:53,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 09:22:53,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:53,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:53,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128063391] [2020-10-28 09:22:53,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:22:53,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:22:53,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438185670] [2020-10-28 09:22:53,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:22:53,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:53,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:22:53,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:22:53,501 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-10-28 09:22:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:53,669 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2020-10-28 09:22:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:22:53,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-28 09:22:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:53,682 INFO L225 Difference]: With dead ends: 58 [2020-10-28 09:22:53,683 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 09:22:53,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:22:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 09:22:53,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2020-10-28 09:22:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-28 09:22:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-28 09:22:53,750 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2020-10-28 09:22:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:53,751 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-28 09:22:53,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:22:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-28 09:22:53,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 09:22:53,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:53,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:53,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:22:53,755 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:53,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1884072205, now seen corresponding path program 1 times [2020-10-28 09:22:53,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:53,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014142852] [2020-10-28 09:22:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:53,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:53,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:22:53,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 09:22:53,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:53,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:22:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:22:53,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:54,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:22:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:54,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014142852] [2020-10-28 09:22:54,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:22:54,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:22:54,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142104069] [2020-10-28 09:22:54,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:22:54,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:54,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:22:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:22:54,066 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2020-10-28 09:22:54,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:54,203 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-28 09:22:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:22:54,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 09:22:54,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:54,205 INFO L225 Difference]: With dead ends: 42 [2020-10-28 09:22:54,205 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 09:22:54,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:22:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 09:22:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2020-10-28 09:22:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 09:22:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-28 09:22:54,216 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-28 09:22:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:54,217 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-28 09:22:54,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:22:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-28 09:22:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 09:22:54,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:54,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:54,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:22:54,219 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1043641998, now seen corresponding path program 1 times [2020-10-28 09:22:54,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:54,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167673345] [2020-10-28 09:22:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 09:22:54,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:22:54,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-28 09:22:54,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:22:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:22:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:54,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:54,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:54,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:54,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:54,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:22:54,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:54,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:54,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:54,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:54,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:54,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167673345] [2020-10-28 09:22:54,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:54,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:22:54,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087311404] [2020-10-28 09:22:54,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:22:54,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:54,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:22:54,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:22:54,827 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-10-28 09:22:54,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:54,989 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-10-28 09:22:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:22:54,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-28 09:22:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:54,991 INFO L225 Difference]: With dead ends: 49 [2020-10-28 09:22:54,991 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 09:22:54,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:22:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 09:22:54,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-10-28 09:22:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 09:22:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-28 09:22:55,000 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2020-10-28 09:22:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:55,000 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-28 09:22:55,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:22:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-28 09:22:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 09:22:55,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:55,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:55,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:22:55,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:55,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1618383597, now seen corresponding path program 2 times [2020-10-28 09:22:55,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:55,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521815279] [2020-10-28 09:22:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:55,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 09:22:55,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:22:55,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-28 09:22:55,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:55,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:22:55,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:55,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:22:55,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:55,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:55,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:55,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:22:55,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:55,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:55,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521815279] [2020-10-28 09:22:55,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:55,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:22:55,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561607101] [2020-10-28 09:22:55,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:22:55,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:55,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:22:55,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:22:55,656 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 6 states. [2020-10-28 09:22:55,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:55,840 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2020-10-28 09:22:55,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:22:55,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-28 09:22:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:55,842 INFO L225 Difference]: With dead ends: 59 [2020-10-28 09:22:55,842 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 09:22:55,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:22:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 09:22:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2020-10-28 09:22:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 09:22:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-28 09:22:55,851 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 21 [2020-10-28 09:22:55,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:55,851 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-28 09:22:55,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:22:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-28 09:22:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:22:55,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:55,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:55,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:22:55,853 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:55,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:55,853 INFO L82 PathProgramCache]: Analyzing trace with hash 548236398, now seen corresponding path program 3 times [2020-10-28 09:22:55,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:55,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465302939] [2020-10-28 09:22:55,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:55,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:56,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:22:56,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:22:56,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-28 09:22:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:56,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:22:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:22:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:22:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:56,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:56,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:56,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:56,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:56,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:22:56,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:56,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:56,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:56,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:22:56,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465302939] [2020-10-28 09:22:56,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:56,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:22:56,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373504534] [2020-10-28 09:22:56,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:22:56,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:56,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:22:56,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:22:56,453 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2020-10-28 09:22:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:56,636 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-28 09:22:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:22:56,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-28 09:22:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:56,638 INFO L225 Difference]: With dead ends: 69 [2020-10-28 09:22:56,638 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 09:22:56,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:22:56,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 09:22:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 35. [2020-10-28 09:22:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 09:22:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-10-28 09:22:56,652 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2020-10-28 09:22:56,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:56,652 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-10-28 09:22:56,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:22:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-10-28 09:22:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 09:22:56,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:56,654 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:56,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:22:56,655 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:56,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1208169230, now seen corresponding path program 1 times [2020-10-28 09:22:56,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:56,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503361637] [2020-10-28 09:22:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:56,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:57,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:58,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:58,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 09:22:58,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:22:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2298 [2020-10-28 09:22:58,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:58,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:22:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:22:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:59,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:59,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:59,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:59,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:59,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:22:59,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:59,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:59,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:59,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:59,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:59,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503361637] [2020-10-28 09:22:59,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:59,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:22:59,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044051864] [2020-10-28 09:22:59,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:22:59,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:59,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:22:59,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:22:59,107 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 9 states. [2020-10-28 09:22:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:59,355 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2020-10-28 09:22:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:22:59,355 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-28 09:22:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:59,357 INFO L225 Difference]: With dead ends: 90 [2020-10-28 09:22:59,357 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 09:22:59,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:22:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 09:22:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 44. [2020-10-28 09:22:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 09:22:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-28 09:22:59,366 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 30 [2020-10-28 09:22:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:59,367 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-28 09:22:59,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:22:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-28 09:22:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 09:22:59,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:59,368 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:59,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:22:59,369 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:59,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1139664845, now seen corresponding path program 2 times [2020-10-28 09:22:59,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:59,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463873406] [2020-10-28 09:22:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:59,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:59,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:59,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:59,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:00,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:04,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:04,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 09:23:04,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:23:04,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:23:04,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:04,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:23:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 09:23:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:04,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:04,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:04,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:23:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:04,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 57 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:23:04,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463873406] [2020-10-28 09:23:04,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:04,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:23:04,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146830410] [2020-10-28 09:23:04,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:23:04,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:04,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:23:04,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:23:04,544 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 10 states. [2020-10-28 09:23:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:05,019 INFO L93 Difference]: Finished difference Result 112 states and 137 transitions. [2020-10-28 09:23:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:23:05,020 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-28 09:23:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:05,021 INFO L225 Difference]: With dead ends: 112 [2020-10-28 09:23:05,021 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 09:23:05,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:23:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 09:23:05,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 47. [2020-10-28 09:23:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 09:23:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-10-28 09:23:05,030 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 39 [2020-10-28 09:23:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:05,030 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-10-28 09:23:05,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:23:05,031 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-10-28 09:23:05,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 09:23:05,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:05,032 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:05,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:23:05,032 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:05,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:05,033 INFO L82 PathProgramCache]: Analyzing trace with hash 761599694, now seen corresponding path program 3 times [2020-10-28 09:23:05,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:05,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313579745] [2020-10-28 09:23:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:05,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:05,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:05,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:10,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 09:23:10,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:23:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:23:10,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:10,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:23:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:23:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:23:10,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:23:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:10,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 09:23:10,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313579745] [2020-10-28 09:23:10,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:10,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:23:10,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482913903] [2020-10-28 09:23:10,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:23:10,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:10,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:23:10,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:23:10,173 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 10 states. [2020-10-28 09:23:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:10,443 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2020-10-28 09:23:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:23:10,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 09:23:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:10,445 INFO L225 Difference]: With dead ends: 102 [2020-10-28 09:23:10,445 INFO L226 Difference]: Without dead ends: 89 [2020-10-28 09:23:10,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:23:10,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-28 09:23:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 59. [2020-10-28 09:23:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 09:23:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-28 09:23:10,454 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 42 [2020-10-28 09:23:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:10,455 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-28 09:23:10,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:23:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-28 09:23:10,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 09:23:10,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:10,456 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:10,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:23:10,457 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:10,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:10,457 INFO L82 PathProgramCache]: Analyzing trace with hash 586980366, now seen corresponding path program 4 times [2020-10-28 09:23:10,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:10,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718180066] [2020-10-28 09:23:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:15,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 09:23:15,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 09:23:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:23:15,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:15,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:23:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 09:23:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:15,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:15,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:23:15,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:15,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:15,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 25 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:15,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718180066] [2020-10-28 09:23:15,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:15,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:23:15,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590285680] [2020-10-28 09:23:15,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:23:15,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:15,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:23:15,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:23:15,798 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 16 states. [2020-10-28 09:23:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:17,081 INFO L93 Difference]: Finished difference Result 163 states and 196 transitions. [2020-10-28 09:23:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:23:17,082 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-28 09:23:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:17,083 INFO L225 Difference]: With dead ends: 163 [2020-10-28 09:23:17,083 INFO L226 Difference]: Without dead ends: 130 [2020-10-28 09:23:17,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:23:17,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-28 09:23:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 77. [2020-10-28 09:23:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-28 09:23:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-10-28 09:23:17,099 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 54 [2020-10-28 09:23:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:17,100 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-10-28 09:23:17,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:23:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-10-28 09:23:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 09:23:17,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:17,102 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 13, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:17,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:23:17,102 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:17,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:17,102 INFO L82 PathProgramCache]: Analyzing trace with hash 580957614, now seen corresponding path program 5 times [2020-10-28 09:23:17,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:17,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515828394] [2020-10-28 09:23:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:17,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:17,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:19,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:19,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:21,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:22,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 09:23:22,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 09:23:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:23:22,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:22,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:23:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 09:23:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:23:22,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:22,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:22,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:22,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:22,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:22,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:22,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:22,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 268 proven. 187 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 09:23:22,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515828394] [2020-10-28 09:23:22,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:22,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:23:22,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287529201] [2020-10-28 09:23:22,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:23:22,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:22,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:23:22,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:23:22,387 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 16 states. [2020-10-28 09:23:22,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:22,843 INFO L93 Difference]: Finished difference Result 162 states and 195 transitions. [2020-10-28 09:23:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:23:22,843 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2020-10-28 09:23:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:22,845 INFO L225 Difference]: With dead ends: 162 [2020-10-28 09:23:22,845 INFO L226 Difference]: Without dead ends: 149 [2020-10-28 09:23:22,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:23:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-28 09:23:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 95. [2020-10-28 09:23:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-28 09:23:22,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2020-10-28 09:23:22,859 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 72 [2020-10-28 09:23:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:22,859 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2020-10-28 09:23:22,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:23:22,859 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2020-10-28 09:23:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 09:23:22,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:22,861 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:22,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:23:22,861 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:22,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:22,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1044524658, now seen corresponding path program 6 times [2020-10-28 09:23:22,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:22,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764143020] [2020-10-28 09:23:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:22,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:23,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:23,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:27,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:27,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 09:23:27,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-28 09:23:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:23:27,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:27,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:23:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 09:23:27,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:28,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:28,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:28,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:28,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:28,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:28,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:23:28,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:28,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:28,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:28,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:28,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:28,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 181 proven. 737 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 09:23:28,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764143020] [2020-10-28 09:23:28,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:28,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:23:28,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705613544] [2020-10-28 09:23:28,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:23:28,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:28,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:23:28,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:23:28,571 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand 26 states. [2020-10-28 09:23:31,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:31,410 INFO L93 Difference]: Finished difference Result 269 states and 328 transitions. [2020-10-28 09:23:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:23:31,412 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 90 [2020-10-28 09:23:31,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:31,414 INFO L225 Difference]: With dead ends: 269 [2020-10-28 09:23:31,414 INFO L226 Difference]: Without dead ends: 218 [2020-10-28 09:23:31,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:23:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-28 09:23:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 125. [2020-10-28 09:23:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 09:23:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2020-10-28 09:23:31,447 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 90 [2020-10-28 09:23:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:31,448 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2020-10-28 09:23:31,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:23:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2020-10-28 09:23:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 09:23:31,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:31,450 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 23, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:31,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:23:31,450 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:31,451 INFO L82 PathProgramCache]: Analyzing trace with hash -354947346, now seen corresponding path program 7 times [2020-10-28 09:23:31,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:31,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312207914] [2020-10-28 09:23:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:36,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:36,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:36,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 09:23:36,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-28 09:23:36,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:23:36,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:36,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:23:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 09:23:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 09:23:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:36,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:36,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:36,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:36,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:36,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:23:36,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:36,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:36,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:36,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 888 proven. 672 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-28 09:23:36,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312207914] [2020-10-28 09:23:36,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:36,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:23:36,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80672455] [2020-10-28 09:23:36,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:23:36,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:36,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:23:36,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:23:36,999 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand 26 states. [2020-10-28 09:23:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:37,699 INFO L93 Difference]: Finished difference Result 262 states and 319 transitions. [2020-10-28 09:23:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:23:37,699 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 120 [2020-10-28 09:23:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:37,702 INFO L225 Difference]: With dead ends: 262 [2020-10-28 09:23:37,702 INFO L226 Difference]: Without dead ends: 249 [2020-10-28 09:23:37,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:23:37,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-28 09:23:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 155. [2020-10-28 09:23:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-28 09:23:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 178 transitions. [2020-10-28 09:23:37,719 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 178 transitions. Word has length 120 [2020-10-28 09:23:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:37,719 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 178 transitions. [2020-10-28 09:23:37,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:23:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 178 transitions. [2020-10-28 09:23:37,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 09:23:37,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:37,725 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:37,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:23:37,726 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:37,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:37,726 INFO L82 PathProgramCache]: Analyzing trace with hash -451756018, now seen corresponding path program 8 times [2020-10-28 09:23:37,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:37,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143175234] [2020-10-28 09:23:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:40,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:40,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:40,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:42,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:42,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:42,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 09:23:42,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 09:23:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:23:42,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:42,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:23:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 09:23:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:43,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:43,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:43,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:43,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:43,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:43,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:43,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:43,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:43,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:43,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:43,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 1241 proven. 1552 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-28 09:23:44,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143175234] [2020-10-28 09:23:44,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:44,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:23:44,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223291248] [2020-10-28 09:23:44,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:23:44,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:44,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:23:44,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:23:44,006 INFO L87 Difference]: Start difference. First operand 155 states and 178 transitions. Second operand 36 states. [2020-10-28 09:23:49,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:49,387 INFO L93 Difference]: Finished difference Result 399 states and 488 transitions. [2020-10-28 09:23:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:23:49,388 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 150 [2020-10-28 09:23:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:49,391 INFO L225 Difference]: With dead ends: 399 [2020-10-28 09:23:49,392 INFO L226 Difference]: Without dead ends: 318 [2020-10-28 09:23:49,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=1259, Unknown=0, NotChecked=0, Total=1332 [2020-10-28 09:23:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-28 09:23:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 185. [2020-10-28 09:23:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-28 09:23:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 208 transitions. [2020-10-28 09:23:49,408 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 208 transitions. Word has length 150 [2020-10-28 09:23:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:49,408 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 208 transitions. [2020-10-28 09:23:49,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:23:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 208 transitions. [2020-10-28 09:23:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 09:23:49,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:49,412 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 33, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:49,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:23:49,413 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash 444042606, now seen corresponding path program 9 times [2020-10-28 09:23:49,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:49,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119604823] [2020-10-28 09:23:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:49,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:54,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:54,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 09:23:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 09:23:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:23:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:54,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-28 09:23:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 09:23:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 09:23:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:55,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:55,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:55,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:55,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:55,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:23:55,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:55,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 2149 proven. 1751 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-28 09:23:55,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119604823] [2020-10-28 09:23:55,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:55,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-28 09:23:55,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095102436] [2020-10-28 09:23:55,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-28 09:23:55,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:55,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-28 09:23:55,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:23:55,538 INFO L87 Difference]: Start difference. First operand 185 states and 208 transitions. Second operand 39 states. [2020-10-28 09:23:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:56,783 INFO L93 Difference]: Finished difference Result 383 states and 469 transitions. [2020-10-28 09:23:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 09:23:56,783 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 180 [2020-10-28 09:23:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:56,787 INFO L225 Difference]: With dead ends: 383 [2020-10-28 09:23:56,788 INFO L226 Difference]: Without dead ends: 370 [2020-10-28 09:23:56,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=744, Invalid=816, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 09:23:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-28 09:23:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 224. [2020-10-28 09:23:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-28 09:23:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 260 transitions. [2020-10-28 09:23:56,807 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 260 transitions. Word has length 180 [2020-10-28 09:23:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:56,808 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 260 transitions. [2020-10-28 09:23:56,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-28 09:23:56,808 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 260 transitions. [2020-10-28 09:23:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-28 09:23:56,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:56,818 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 35, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:56,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:23:56,818 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:56,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:56,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1833883637, now seen corresponding path program 10 times [2020-10-28 09:23:56,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:56,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386194863] [2020-10-28 09:23:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:56,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:57,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:01,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:01,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:01,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:01,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-28 09:24:01,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:24:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:24:01,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:01,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-28 09:24:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 09:24:01,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:03,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:03,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:03,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:03,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:03,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6902 backedges. 3441 proven. 2185 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-10-28 09:24:03,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386194863] [2020-10-28 09:24:03,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:03,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-28 09:24:03,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399785711] [2020-10-28 09:24:03,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-28 09:24:03,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:03,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-28 09:24:03,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 09:24:03,426 INFO L87 Difference]: Start difference. First operand 224 states and 260 transitions. Second operand 42 states. [2020-10-28 09:24:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:10,706 INFO L93 Difference]: Finished difference Result 519 states and 636 transitions. [2020-10-28 09:24:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-28 09:24:10,706 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 219 [2020-10-28 09:24:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:10,710 INFO L225 Difference]: With dead ends: 519 [2020-10-28 09:24:10,710 INFO L226 Difference]: Without dead ends: 399 [2020-10-28 09:24:10,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=85, Invalid=1721, Unknown=0, NotChecked=0, Total=1806 [2020-10-28 09:24:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-28 09:24:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 242. [2020-10-28 09:24:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-28 09:24:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 278 transitions. [2020-10-28 09:24:10,728 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 278 transitions. Word has length 219 [2020-10-28 09:24:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:10,728 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 278 transitions. [2020-10-28 09:24:10,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-28 09:24:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 278 transitions. [2020-10-28 09:24:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 09:24:10,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:10,733 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 39, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:10,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:24:10,733 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:10,734 INFO L82 PathProgramCache]: Analyzing trace with hash -267238827, now seen corresponding path program 11 times [2020-10-28 09:24:10,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:10,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804718185] [2020-10-28 09:24:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:10,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:13,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:14,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:14,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:14,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:15,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:15,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 09:24:15,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-28 09:24:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:24:15,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:15,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-28 09:24:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-28 09:24:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 09:24:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:18,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:18,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:18,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:18,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:18,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8177 backedges. 2883 proven. 4902 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-28 09:24:18,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804718185] [2020-10-28 09:24:18,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:18,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-28 09:24:18,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212269222] [2020-10-28 09:24:18,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-28 09:24:18,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:18,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-28 09:24:18,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-28 09:24:18,323 INFO L87 Difference]: Start difference. First operand 242 states and 278 transitions. Second operand 62 states. [2020-10-28 09:24:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:20,594 INFO L93 Difference]: Finished difference Result 562 states and 704 transitions. [2020-10-28 09:24:20,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-28 09:24:20,595 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 237 [2020-10-28 09:24:20,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:20,599 INFO L225 Difference]: With dead ends: 562 [2020-10-28 09:24:20,599 INFO L226 Difference]: Without dead ends: 549 [2020-10-28 09:24:20,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1894, Invalid=2012, Unknown=0, NotChecked=0, Total=3906 [2020-10-28 09:24:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-10-28 09:24:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 311. [2020-10-28 09:24:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-28 09:24:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 370 transitions. [2020-10-28 09:24:20,623 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 370 transitions. Word has length 237 [2020-10-28 09:24:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:20,624 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 370 transitions. [2020-10-28 09:24:20,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-28 09:24:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 370 transitions. [2020-10-28 09:24:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-28 09:24:20,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:20,626 INFO L422 BasicCegarLoop]: trace histogram [97, 97, 58, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:20,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:24:20,626 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:20,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:20,627 INFO L82 PathProgramCache]: Analyzing trace with hash 649485902, now seen corresponding path program 12 times [2020-10-28 09:24:20,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:20,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091143985] [2020-10-28 09:24:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:20,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:24,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:25,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-28 09:24:25,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:24:25,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:24:25,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:25,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-28 09:24:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-28 09:24:25,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:28,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:28,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:28,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:28,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-28 09:24:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14065 backedges. 6913 proven. 4732 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2020-10-28 09:24:28,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091143985] [2020-10-28 09:24:28,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:28,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-28 09:24:28,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096142711] [2020-10-28 09:24:28,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-28 09:24:28,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:28,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-28 09:24:28,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2020-10-28 09:24:28,753 INFO L87 Difference]: Start difference. First operand 311 states and 370 transitions. Second operand 60 states. [2020-10-28 09:24:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:43,711 INFO L93 Difference]: Finished difference Result 783 states and 976 transitions. [2020-10-28 09:24:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-28 09:24:43,711 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 306 [2020-10-28 09:24:43,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:43,716 INFO L225 Difference]: With dead ends: 783 [2020-10-28 09:24:43,716 INFO L226 Difference]: Without dead ends: 594 [2020-10-28 09:24:43,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=121, Invalid=3539, Unknown=0, NotChecked=0, Total=3660 [2020-10-28 09:24:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-28 09:24:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 365. [2020-10-28 09:24:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-28 09:24:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 424 transitions. [2020-10-28 09:24:43,739 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 424 transitions. Word has length 306 [2020-10-28 09:24:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:43,739 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 424 transitions. [2020-10-28 09:24:43,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-28 09:24:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 424 transitions. [2020-10-28 09:24:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-28 09:24:43,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:43,742 INFO L422 BasicCegarLoop]: trace histogram [115, 115, 58, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:43,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:24:43,742 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:43,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1464378158, now seen corresponding path program 13 times [2020-10-28 09:24:43,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:43,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570506397] [2020-10-28 09:24:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-28 09:24:48,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 09:24:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:48,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-28 09:24:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 09:24:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:52,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:52,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:52,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:52,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:52,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:52,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:52,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:52,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 19780 backedges. 9976 proven. 4902 refuted. 0 times theorem prover too weak. 4902 trivial. 0 not checked. [2020-10-28 09:24:52,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570506397] [2020-10-28 09:24:52,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:52,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-28 09:24:52,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918803293] [2020-10-28 09:24:52,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-28 09:24:52,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:52,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-28 09:24:52,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2020-10-28 09:24:52,181 INFO L87 Difference]: Start difference. First operand 365 states and 424 transitions. Second operand 61 states. [2020-10-28 09:25:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:07,753 INFO L93 Difference]: Finished difference Result 790 states and 967 transitions. [2020-10-28 09:25:07,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-28 09:25:07,754 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 360 [2020-10-28 09:25:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:07,758 INFO L225 Difference]: With dead ends: 790 [2020-10-28 09:25:07,758 INFO L226 Difference]: Without dead ends: 601 [2020-10-28 09:25:07,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=123, Invalid=3659, Unknown=0, NotChecked=0, Total=3782 [2020-10-28 09:25:07,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-28 09:25:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 368. [2020-10-28 09:25:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-10-28 09:25:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 427 transitions. [2020-10-28 09:25:07,779 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 427 transitions. Word has length 360 [2020-10-28 09:25:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:07,780 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 427 transitions. [2020-10-28 09:25:07,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-28 09:25:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 427 transitions. [2020-10-28 09:25:07,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-28 09:25:07,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:07,782 INFO L422 BasicCegarLoop]: trace histogram [116, 116, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:07,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:25:07,783 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:07,783 INFO L82 PathProgramCache]: Analyzing trace with hash 527052787, now seen corresponding path program 14 times [2020-10-28 09:25:07,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:07,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417270649] [2020-10-28 09:25:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:07,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:08,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:13,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:13,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-28 09:25:13,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:25:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-28 09:25:13,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:13,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-28 09:25:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-28 09:25:13,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:16,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:16,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:16,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 20126 backedges. 10149 proven. 5075 refuted. 0 times theorem prover too weak. 4902 trivial. 0 not checked. [2020-10-28 09:25:16,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417270649] [2020-10-28 09:25:16,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:16,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-28 09:25:16,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679256864] [2020-10-28 09:25:16,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-28 09:25:16,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:16,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-28 09:25:16,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2020-10-28 09:25:16,291 INFO L87 Difference]: Start difference. First operand 368 states and 427 transitions. Second operand 62 states. [2020-10-28 09:25:32,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:32,478 INFO L93 Difference]: Finished difference Result 797 states and 975 transitions. [2020-10-28 09:25:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-28 09:25:32,479 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 363 [2020-10-28 09:25:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:32,485 INFO L225 Difference]: With dead ends: 797 [2020-10-28 09:25:32,485 INFO L226 Difference]: Without dead ends: 608 [2020-10-28 09:25:32,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=125, Invalid=3781, Unknown=0, NotChecked=0, Total=3906 [2020-10-28 09:25:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-28 09:25:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 371. [2020-10-28 09:25:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-28 09:25:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 430 transitions. [2020-10-28 09:25:32,509 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 430 transitions. Word has length 363 [2020-10-28 09:25:32,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:32,509 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 430 transitions. [2020-10-28 09:25:32,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-28 09:25:32,510 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 430 transitions. [2020-10-28 09:25:32,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-28 09:25:32,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:32,512 INFO L422 BasicCegarLoop]: trace histogram [117, 117, 59, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:32,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:25:32,512 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:32,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:32,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1750683378, now seen corresponding path program 15 times [2020-10-28 09:25:32,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:32,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933122873] [2020-10-28 09:25:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:37,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:37,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-28 09:25:37,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:25:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 09:25:37,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:37,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-28 09:25:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 09:25:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:40,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 20475 backedges. 10322 proven. 5251 refuted. 0 times theorem prover too weak. 4902 trivial. 0 not checked. [2020-10-28 09:25:40,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933122873] [2020-10-28 09:25:40,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:40,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-28 09:25:40,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256745793] [2020-10-28 09:25:40,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-28 09:25:40,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:40,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-28 09:25:40,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-28 09:25:40,990 INFO L87 Difference]: Start difference. First operand 371 states and 430 transitions. Second operand 63 states. [2020-10-28 09:25:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:57,849 INFO L93 Difference]: Finished difference Result 804 states and 983 transitions. [2020-10-28 09:25:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-28 09:25:57,849 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 366 [2020-10-28 09:25:57,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:57,854 INFO L225 Difference]: With dead ends: 804 [2020-10-28 09:25:57,854 INFO L226 Difference]: Without dead ends: 615 [2020-10-28 09:25:57,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=127, Invalid=3905, Unknown=0, NotChecked=0, Total=4032 [2020-10-28 09:25:57,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-10-28 09:25:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 374. [2020-10-28 09:25:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-28 09:25:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 433 transitions. [2020-10-28 09:25:57,873 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 433 transitions. Word has length 366 [2020-10-28 09:25:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:57,873 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 433 transitions. [2020-10-28 09:25:57,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-28 09:25:57,873 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 433 transitions. [2020-10-28 09:25:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-28 09:25:57,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:57,876 INFO L422 BasicCegarLoop]: trace histogram [118, 118, 60, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:57,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:25:57,876 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:57,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:57,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1600465389, now seen corresponding path program 16 times [2020-10-28 09:25:57,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:57,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204237780] [2020-10-28 09:25:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:58,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:03,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:03,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-28 09:26:03,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:26:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-28 09:26:03,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:03,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-28 09:26:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 09:26:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:06,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:06,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:06,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:06,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:06,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:06,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 20827 backedges. 10495 proven. 5430 refuted. 0 times theorem prover too weak. 4902 trivial. 0 not checked. [2020-10-28 09:26:06,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204237780] [2020-10-28 09:26:06,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:06,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-28 09:26:06,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515957603] [2020-10-28 09:26:06,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-28 09:26:06,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:06,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-28 09:26:06,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2020-10-28 09:26:06,558 INFO L87 Difference]: Start difference. First operand 374 states and 433 transitions. Second operand 64 states. [2020-10-28 09:26:23,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:23,932 INFO L93 Difference]: Finished difference Result 811 states and 991 transitions. [2020-10-28 09:26:23,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-28 09:26:23,933 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 369 [2020-10-28 09:26:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:23,937 INFO L225 Difference]: With dead ends: 811 [2020-10-28 09:26:23,938 INFO L226 Difference]: Without dead ends: 622 [2020-10-28 09:26:23,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=129, Invalid=4031, Unknown=0, NotChecked=0, Total=4160 [2020-10-28 09:26:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-10-28 09:26:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 377. [2020-10-28 09:26:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-28 09:26:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 436 transitions. [2020-10-28 09:26:23,981 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 436 transitions. Word has length 369 [2020-10-28 09:26:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:23,982 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 436 transitions. [2020-10-28 09:26:23,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-28 09:26:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 436 transitions. [2020-10-28 09:26:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-28 09:26:23,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:23,984 INFO L422 BasicCegarLoop]: trace histogram [119, 119, 61, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:23,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:26:23,985 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:23,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:23,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1812277522, now seen corresponding path program 17 times [2020-10-28 09:26:23,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:23,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946047346] [2020-10-28 09:26:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:24,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:29,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-28 09:26:29,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:26:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 09:26:29,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:29,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-28 09:26:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:26:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 09:26:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:32,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:32,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:32,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:32,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:32,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:32,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:26:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:26:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21182 backedges. 10668 proven. 5612 refuted. 0 times theorem prover too weak. 4902 trivial. 0 not checked. [2020-10-28 09:26:32,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946047346] [2020-10-28 09:26:32,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:32,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-28 09:26:32,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266363468] [2020-10-28 09:26:32,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-28 09:26:32,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:32,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-28 09:26:32,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2020-10-28 09:26:32,710 INFO L87 Difference]: Start difference. First operand 377 states and 436 transitions. Second operand 65 states.