/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:51:29,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:51:29,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:51:29,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:51:29,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:51:29,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:51:29,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:51:29,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:51:29,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:51:29,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:51:29,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:51:29,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:51:29,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:51:29,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:51:29,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:51:29,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:51:29,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:51:29,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:51:29,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:51:29,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:51:29,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:51:29,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:51:29,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:51:29,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:51:29,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:51:29,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:51:29,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:51:29,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:51:29,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:51:29,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:51:29,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:51:29,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:51:29,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:51:29,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:51:29,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:51:29,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:51:29,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:51:29,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:51:29,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:51:29,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:51:29,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:51:29,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:51:29,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:51:29,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:51:29,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:51:29,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:51:29,887 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:51:29,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:51:29,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:51:29,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:51:29,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:51:29,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:51:29,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:51:29,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:51:29,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:51:29,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:51:29,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:51:29,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:51:29,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:51:29,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:51:29,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:51:29,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:51:29,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:51:29,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:51:29,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:51:29,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:51:29,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:51:29,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:51:29,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:51:29,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:51:29,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:51:29,893 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:51:30,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:51:30,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:51:30,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:51:30,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:51:30,325 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:51:30,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2020-10-29 04:51:30,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18c4a3eda/4c05dbdefe324144b76879ca39d1ad34/FLAGc08bcc3cf [2020-10-29 04:51:31,349 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:51:31,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label07.c [2020-10-29 04:51:31,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18c4a3eda/4c05dbdefe324144b76879ca39d1ad34/FLAGc08bcc3cf [2020-10-29 04:51:31,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18c4a3eda/4c05dbdefe324144b76879ca39d1ad34 [2020-10-29 04:51:31,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:51:31,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:51:31,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:51:31,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:51:31,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:51:31,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:31" (1/1) ... [2020-10-29 04:51:31,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b33b144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:31, skipping insertion in model container [2020-10-29 04:51:31,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:31" (1/1) ... [2020-10-29 04:51:31,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:51:31,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:51:32,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:51:32,760 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:51:33,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:51:33,063 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:51:33,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33 WrapperNode [2020-10-29 04:51:33,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:51:33,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:51:33,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:51:33,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:51:33,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33" (1/1) ... [2020-10-29 04:51:33,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33" (1/1) ... [2020-10-29 04:51:33,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33" (1/1) ... [2020-10-29 04:51:33,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33" (1/1) ... [2020-10-29 04:51:33,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33" (1/1) ... [2020-10-29 04:51:33,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33" (1/1) ... [2020-10-29 04:51:33,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33" (1/1) ... [2020-10-29 04:51:33,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:51:33,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:51:33,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:51:33,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:51:33,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:51:33,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:51:33,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:51:33,382 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:51:33,382 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:51:33,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:51:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:51:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:51:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:51:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:51:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:51:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:51:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:51:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:51:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:51:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:51:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:51:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:51:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:51:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:51:36,454 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:51:36,454 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:51:36,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:51:36 BoogieIcfgContainer [2020-10-29 04:51:36,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:51:36,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:51:36,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:51:36,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:51:36,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:51:31" (1/3) ... [2020-10-29 04:51:36,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb086ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:51:36, skipping insertion in model container [2020-10-29 04:51:36,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:33" (2/3) ... [2020-10-29 04:51:36,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb086ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:51:36, skipping insertion in model container [2020-10-29 04:51:36,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:51:36" (3/3) ... [2020-10-29 04:51:36,466 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label07.c [2020-10-29 04:51:36,478 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:51:36,484 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:51:36,497 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:51:36,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:51:36,528 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:51:36,528 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:51:36,528 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:51:36,528 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:51:36,528 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:51:36,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:51:36,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:51:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:51:36,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-29 04:51:36,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:36,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:51:36,572 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:36,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:36,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1408369932, now seen corresponding path program 1 times [2020-10-29 04:51:36,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:36,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709917464] [2020-10-29 04:51:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:37,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:41,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:41,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 04:51:41,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:51:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4347 [2020-10-29 04:51:41,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:41,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:51:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:51:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 04:51:41,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 04:51:42,047 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:51:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:51:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:42,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:42,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:51:42,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:42,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 04:51:42,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:42,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:51:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:51:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:51:42,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709917464] [2020-10-29 04:51:42,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:51:42,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:51:42,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886907171] [2020-10-29 04:51:42,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:51:42,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:51:42,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:51:42,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:51:42,292 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:51:42,774 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:51:47,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:51:47,556 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-29 04:51:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:51:47,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2020-10-29 04:51:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:51:47,591 INFO L225 Difference]: With dead ends: 889 [2020-10-29 04:51:47,591 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 04:51:47,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:51:47,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 04:51:47,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-29 04:51:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-29 04:51:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-29 04:51:47,757 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 179 [2020-10-29 04:51:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:51:47,760 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-29 04:51:47,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:51:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-29 04:51:47,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 04:51:47,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:47,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:51:47,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:51:47,779 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:47,780 INFO L82 PathProgramCache]: Analyzing trace with hash 339711267, now seen corresponding path program 1 times [2020-10-29 04:51:47,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:47,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546840497] [2020-10-29 04:51:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:47,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:51,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 04:51:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:51:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3169 [2020-10-29 04:51:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:51,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:51:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:51:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 04:51:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:51,663 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:51:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:51:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:51,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:51,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:51,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:51:51,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:51,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:51:51,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:51,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:51,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:51:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:51:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 04:51:51,887 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:51:51,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:51:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:51,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:51,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:51,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:51:51,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:51:51,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:51,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:51:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:51:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:51:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:51:51,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546840497] [2020-10-29 04:51:51,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:51:51,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:51:51,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111766116] [2020-10-29 04:51:51,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:51:51,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:51:51,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:51:51,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:51:51,996 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 5 states. [2020-10-29 04:51:52,592 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:51:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:51:57,665 INFO L93 Difference]: Finished difference Result 1396 states and 2172 transitions. [2020-10-29 04:51:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:51:57,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-29 04:51:57,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:51:57,675 INFO L225 Difference]: With dead ends: 1396 [2020-10-29 04:51:57,676 INFO L226 Difference]: Without dead ends: 926 [2020-10-29 04:51:57,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:51:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-10-29 04:51:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 904. [2020-10-29 04:51:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-29 04:51:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1372 transitions. [2020-10-29 04:51:57,734 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1372 transitions. Word has length 188 [2020-10-29 04:51:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:51:57,735 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1372 transitions. [2020-10-29 04:51:57,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:51:57,735 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1372 transitions. [2020-10-29 04:51:57,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-29 04:51:57,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:57,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:51:57,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:51:57,740 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:57,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash 525433397, now seen corresponding path program 1 times [2020-10-29 04:51:57,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:57,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649975040] [2020-10-29 04:51:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:59,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:59,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 04:51:59,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:51:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2170 [2020-10-29 04:51:59,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:59,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:51:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:51:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 04:51:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:52:00,614 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:00,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:00,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:00,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:00,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:00,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:52:00,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:00,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:00,842 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:00,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:00,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:52:00,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:52:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:00,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:52:00,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:01,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649975040] [2020-10-29 04:52:01,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:01,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:01,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912080287] [2020-10-29 04:52:01,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:01,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:01,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:01,004 INFO L87 Difference]: Start difference. First operand 904 states and 1372 transitions. Second operand 5 states. [2020-10-29 04:52:01,679 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:06,390 INFO L93 Difference]: Finished difference Result 2653 states and 4096 transitions. [2020-10-29 04:52:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:06,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-29 04:52:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:06,415 INFO L225 Difference]: With dead ends: 2653 [2020-10-29 04:52:06,415 INFO L226 Difference]: Without dead ends: 1755 [2020-10-29 04:52:06,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:06,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2020-10-29 04:52:06,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1748. [2020-10-29 04:52:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2020-10-29 04:52:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2562 transitions. [2020-10-29 04:52:06,532 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2562 transitions. Word has length 191 [2020-10-29 04:52:06,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:06,533 INFO L481 AbstractCegarLoop]: Abstraction has 1748 states and 2562 transitions. [2020-10-29 04:52:06,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2562 transitions. [2020-10-29 04:52:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-29 04:52:06,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:06,554 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:06,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:52:06,556 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:06,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1384060407, now seen corresponding path program 1 times [2020-10-29 04:52:06,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:06,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762800273] [2020-10-29 04:52:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:06,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:06,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:11,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:11,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 04:52:11,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:52:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 04:52:11,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:11,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:52:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 04:52:11,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:52:12,284 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:12,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:12,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:12,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:52:12,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:12,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:12,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:12,565 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:12,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:12,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:52:12,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:52:12,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:12,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:12,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:12,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:52:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:12,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:12,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:12,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:52:12,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:52:12,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:12,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:52:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:52:12,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762800273] [2020-10-29 04:52:12,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:12,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:12,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071615167] [2020-10-29 04:52:12,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:12,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:12,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:12,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:12,775 INFO L87 Difference]: Start difference. First operand 1748 states and 2562 transitions. Second operand 5 states. [2020-10-29 04:52:13,568 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:17,954 INFO L93 Difference]: Finished difference Result 5172 states and 7642 transitions. [2020-10-29 04:52:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:17,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-29 04:52:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:17,979 INFO L225 Difference]: With dead ends: 5172 [2020-10-29 04:52:17,979 INFO L226 Difference]: Without dead ends: 1751 [2020-10-29 04:52:17,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-10-29 04:52:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1747. [2020-10-29 04:52:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-10-29 04:52:18,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2560 transitions. [2020-10-29 04:52:18,054 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2560 transitions. Word has length 198 [2020-10-29 04:52:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:18,054 INFO L481 AbstractCegarLoop]: Abstraction has 1747 states and 2560 transitions. [2020-10-29 04:52:18,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:18,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2560 transitions. [2020-10-29 04:52:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-29 04:52:18,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:18,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:18,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:52:18,063 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:18,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:18,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1288073737, now seen corresponding path program 1 times [2020-10-29 04:52:18,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:18,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521168963] [2020-10-29 04:52:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:18,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:20,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:20,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 04:52:20,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:52:20,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2535 [2020-10-29 04:52:20,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:20,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 04:52:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 04:52:20,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:52:21,248 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:21,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:21,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:21,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:21,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:21,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:21,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:21,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:21,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:21,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:21,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:21,459 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:21,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:21,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:52:21,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 04:52:21,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:21,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:52:21,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:21,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521168963] [2020-10-29 04:52:21,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:21,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:21,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320035494] [2020-10-29 04:52:21,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:21,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:21,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:21,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:21,637 INFO L87 Difference]: Start difference. First operand 1747 states and 2560 transitions. Second operand 5 states. [2020-10-29 04:52:22,187 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:52:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:26,843 INFO L93 Difference]: Finished difference Result 5177 states and 7800 transitions. [2020-10-29 04:52:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:26,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-29 04:52:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:26,875 INFO L225 Difference]: With dead ends: 5177 [2020-10-29 04:52:26,876 INFO L226 Difference]: Without dead ends: 3436 [2020-10-29 04:52:26,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:26,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2020-10-29 04:52:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3424. [2020-10-29 04:52:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3424 states. [2020-10-29 04:52:27,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 4881 transitions. [2020-10-29 04:52:27,015 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 4881 transitions. Word has length 198 [2020-10-29 04:52:27,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:27,016 INFO L481 AbstractCegarLoop]: Abstraction has 3424 states and 4881 transitions. [2020-10-29 04:52:27,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:27,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 4881 transitions. [2020-10-29 04:52:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 04:52:27,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:27,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:27,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:52:27,029 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:27,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2018896654, now seen corresponding path program 1 times [2020-10-29 04:52:27,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:27,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170245085] [2020-10-29 04:52:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:29,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:32,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:32,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 04:52:32,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:52:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:52:32,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:32,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 04:52:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 04:52:32,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:32,624 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:32,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:32,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:32,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:32,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:52:32,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:32,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:32,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:32,828 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:32,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:32,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:32,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:32,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:52:32,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:32,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:32,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:32,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:32,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:32,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:52:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:32,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:32,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:52:32,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 04:52:32,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:32,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:52:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:52:32,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170245085] [2020-10-29 04:52:32,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:32,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:32,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398525120] [2020-10-29 04:52:32,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:32,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:32,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:32,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:33,000 INFO L87 Difference]: Start difference. First operand 3424 states and 4881 transitions. Second operand 5 states. [2020-10-29 04:52:33,622 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:38,074 INFO L93 Difference]: Finished difference Result 9984 states and 14674 transitions. [2020-10-29 04:52:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:38,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-29 04:52:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:38,123 INFO L225 Difference]: With dead ends: 9984 [2020-10-29 04:52:38,123 INFO L226 Difference]: Without dead ends: 6566 [2020-10-29 04:52:38,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:38,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2020-10-29 04:52:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 6145. [2020-10-29 04:52:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6145 states. [2020-10-29 04:52:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 8885 transitions. [2020-10-29 04:52:38,344 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 8885 transitions. Word has length 215 [2020-10-29 04:52:38,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:38,344 INFO L481 AbstractCegarLoop]: Abstraction has 6145 states and 8885 transitions. [2020-10-29 04:52:38,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 8885 transitions. [2020-10-29 04:52:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-29 04:52:38,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:38,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:38,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:52:38,367 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:38,368 INFO L82 PathProgramCache]: Analyzing trace with hash 2072107533, now seen corresponding path program 1 times [2020-10-29 04:52:38,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:38,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094525703] [2020-10-29 04:52:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:38,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:39,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:42,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:43,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:43,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-29 04:52:43,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:52:43,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 04:52:43,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:43,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 04:52:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 04:52:43,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:43,964 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:43,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:43,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:43,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:43,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:43,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:43,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:43,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:43,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:44,182 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:44,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:44,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:44,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:52:44,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:44,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:52:44,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:44,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:44,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:52:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:44,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:44,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:52:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 04:52:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:44,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:52:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:52:44,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094525703] [2020-10-29 04:52:44,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:44,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:44,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312022695] [2020-10-29 04:52:44,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:44,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:44,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:44,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:44,360 INFO L87 Difference]: Start difference. First operand 6145 states and 8885 transitions. Second operand 5 states. [2020-10-29 04:52:44,866 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:49,090 INFO L93 Difference]: Finished difference Result 15423 states and 22736 transitions. [2020-10-29 04:52:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:49,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-29 04:52:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:49,158 INFO L225 Difference]: With dead ends: 15423 [2020-10-29 04:52:49,159 INFO L226 Difference]: Without dead ends: 9284 [2020-10-29 04:52:49,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9284 states. [2020-10-29 04:52:49,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9284 to 9280. [2020-10-29 04:52:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9280 states. [2020-10-29 04:52:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9280 states to 9280 states and 12556 transitions. [2020-10-29 04:52:49,481 INFO L78 Accepts]: Start accepts. Automaton has 9280 states and 12556 transitions. Word has length 227 [2020-10-29 04:52:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:49,482 INFO L481 AbstractCegarLoop]: Abstraction has 9280 states and 12556 transitions. [2020-10-29 04:52:49,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 9280 states and 12556 transitions. [2020-10-29 04:52:49,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 04:52:49,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:49,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:49,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:52:49,514 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:49,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1588501798, now seen corresponding path program 1 times [2020-10-29 04:52:49,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:49,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140124554] [2020-10-29 04:52:49,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:54,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:54,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-29 04:52:54,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:52:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 04:52:54,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:54,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 04:52:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:52:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:55,113 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:55,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:55,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:55,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:55,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:55,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:55,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:55,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:55,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:55,328 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:52:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:55,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:55,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:52:55,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:55,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:52:55,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:55,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:55,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:55,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:52:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:55,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:55,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:52:55,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:52:55,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:55,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:52:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:55,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:52:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:55,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:55,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:52:55,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 04:52:55,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:55,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:52:55,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:52:55,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140124554] [2020-10-29 04:52:55,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:55,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:52:55,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757562608] [2020-10-29 04:52:55,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:52:55,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:55,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:52:55,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:52:55,607 INFO L87 Difference]: Start difference. First operand 9280 states and 12556 transitions. Second operand 7 states. [2020-10-29 04:52:56,346 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:57,001 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:05,695 INFO L93 Difference]: Finished difference Result 37635 states and 55765 transitions. [2020-10-29 04:53:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:53:05,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-29 04:53:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:05,962 INFO L225 Difference]: With dead ends: 37635 [2020-10-29 04:53:05,962 INFO L226 Difference]: Without dead ends: 28361 [2020-10-29 04:53:06,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28361 states. [2020-10-29 04:53:06,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28361 to 28350. [2020-10-29 04:53:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28350 states. [2020-10-29 04:53:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28350 states to 28350 states and 42023 transitions. [2020-10-29 04:53:07,062 INFO L78 Accepts]: Start accepts. Automaton has 28350 states and 42023 transitions. Word has length 236 [2020-10-29 04:53:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:07,063 INFO L481 AbstractCegarLoop]: Abstraction has 28350 states and 42023 transitions. [2020-10-29 04:53:07,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28350 states and 42023 transitions. [2020-10-29 04:53:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 04:53:07,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:07,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:07,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:53:07,237 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:07,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1790041109, now seen corresponding path program 1 times [2020-10-29 04:53:07,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:07,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283433756] [2020-10-29 04:53:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:12,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:12,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-29 04:53:12,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:53:12,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 04:53:12,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:12,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:12,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:12,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 04:53:12,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 04:53:12,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:12,812 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:12,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:12,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:12,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:12,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:12,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:53:12,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:12,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:12,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:12,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:12,991 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:53:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:12,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:13,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:13,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:53:13,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:53:13,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:13,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:13,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:53:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:13,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:13,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 04:53:13,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 04:53:13,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:13,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 04:53:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:53:13,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283433756] [2020-10-29 04:53:13,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:13,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:53:13,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143443927] [2020-10-29 04:53:13,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:53:13,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:13,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:53:13,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:53:13,174 INFO L87 Difference]: Start difference. First operand 28350 states and 42023 transitions. Second operand 5 states. [2020-10-29 04:53:13,769 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:53:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:19,103 INFO L93 Difference]: Finished difference Result 61204 states and 90976 transitions. [2020-10-29 04:53:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:53:19,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-29 04:53:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:19,324 INFO L225 Difference]: With dead ends: 61204 [2020-10-29 04:53:19,324 INFO L226 Difference]: Without dead ends: 32860 [2020-10-29 04:53:19,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:53:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32860 states. [2020-10-29 04:53:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32860 to 30906. [2020-10-29 04:53:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30906 states. [2020-10-29 04:53:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30906 states to 30906 states and 46255 transitions. [2020-10-29 04:53:20,793 INFO L78 Accepts]: Start accepts. Automaton has 30906 states and 46255 transitions. Word has length 238 [2020-10-29 04:53:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:20,794 INFO L481 AbstractCegarLoop]: Abstraction has 30906 states and 46255 transitions. [2020-10-29 04:53:20,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:53:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 30906 states and 46255 transitions. [2020-10-29 04:53:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-29 04:53:20,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:20,924 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:20,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:53:20,925 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:20,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:20,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1258390877, now seen corresponding path program 1 times [2020-10-29 04:53:20,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:20,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957866577] [2020-10-29 04:53:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:21,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:21,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:25,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:25,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 04:53:25,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:53:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:25,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:53:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 04:53:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:26,466 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:26,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:26,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:26,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:53:26,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:26,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:26,658 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:53:26,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:26,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:26,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:26,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:53:26,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:53:26,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:26,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:53:26,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:26,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:53:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:26,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:26,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 04:53:26,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:26,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 04:53:26,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:26,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:26,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 04:53:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:26,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 04:53:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:26,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:26,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:26,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:53:26,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:26,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 04:53:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:26,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:53:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 91 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:53:27,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957866577] [2020-10-29 04:53:27,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:27,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:27,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552784589] [2020-10-29 04:53:27,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:27,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:27,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:27,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:27,010 INFO L87 Difference]: Start difference. First operand 30906 states and 46255 transitions. Second operand 7 states. [2020-10-29 04:53:27,726 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:28,808 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:33,871 INFO L93 Difference]: Finished difference Result 61961 states and 94447 transitions. [2020-10-29 04:53:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:53:33,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-29 04:53:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:34,021 INFO L225 Difference]: With dead ends: 61961 [2020-10-29 04:53:34,021 INFO L226 Difference]: Without dead ends: 31061 [2020-10-29 04:53:34,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:34,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31061 states. [2020-10-29 04:53:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31061 to 28722. [2020-10-29 04:53:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28722 states. [2020-10-29 04:53:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28722 states to 28722 states and 39304 transitions. [2020-10-29 04:53:35,189 INFO L78 Accepts]: Start accepts. Automaton has 28722 states and 39304 transitions. Word has length 266 [2020-10-29 04:53:35,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:35,189 INFO L481 AbstractCegarLoop]: Abstraction has 28722 states and 39304 transitions. [2020-10-29 04:53:35,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 28722 states and 39304 transitions. [2020-10-29 04:53:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-29 04:53:35,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:35,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:35,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:53:35,288 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:35,288 INFO L82 PathProgramCache]: Analyzing trace with hash 534757837, now seen corresponding path program 1 times [2020-10-29 04:53:35,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:35,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765991874] [2020-10-29 04:53:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:35,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:35,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:35,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:40,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:40,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 04:53:40,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:40,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:53:40,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:40,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 04:53:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 04:53:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:40,876 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:40,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:40,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:40,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:40,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:40,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:53:40,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:40,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:41,093 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:53:41,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:41,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:41,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:53:41,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:53:41,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:41,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:41,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:41,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:53:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:41,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:41,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:53:41,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:41,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 04:53:41,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:41,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:53:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:41,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:53:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:41,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:41,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 04:53:41,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 04:53:41,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:41,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 04:53:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:53:41,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765991874] [2020-10-29 04:53:41,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:41,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:41,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633105625] [2020-10-29 04:53:41,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:41,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:41,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:41,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:41,624 INFO L87 Difference]: Start difference. First operand 28722 states and 39304 transitions. Second operand 7 states. [2020-10-29 04:53:42,406 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:53:43,708 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:50,240 INFO L93 Difference]: Finished difference Result 71821 states and 110496 transitions. [2020-10-29 04:53:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:53:50,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-29 04:53:50,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:50,571 INFO L225 Difference]: With dead ends: 71821 [2020-10-29 04:53:50,571 INFO L226 Difference]: Without dead ends: 43105 [2020-10-29 04:53:50,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43105 states. [2020-10-29 04:53:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43105 to 41120. [2020-10-29 04:53:52,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41120 states. [2020-10-29 04:53:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41120 states to 41120 states and 55336 transitions. [2020-10-29 04:53:52,634 INFO L78 Accepts]: Start accepts. Automaton has 41120 states and 55336 transitions. Word has length 299 [2020-10-29 04:53:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:52,634 INFO L481 AbstractCegarLoop]: Abstraction has 41120 states and 55336 transitions. [2020-10-29 04:53:52,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 41120 states and 55336 transitions. [2020-10-29 04:53:52,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 04:53:52,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:52,734 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:52,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:53:52,734 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:52,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:52,735 INFO L82 PathProgramCache]: Analyzing trace with hash -193538689, now seen corresponding path program 1 times [2020-10-29 04:53:52,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:52,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069649643] [2020-10-29 04:53:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:52,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:53,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:53,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:57,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:57,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-29 04:53:57,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:53:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 04:53:57,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:57,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 04:53:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 04:53:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:58,331 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:58,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:58,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:58,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:53:58,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:58,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:58,548 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:53:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:58,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:58,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:58,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:53:58,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:53:58,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:58,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:58,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:58,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:53:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:58,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:58,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:58,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:53:58,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:53:58,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:58,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:53:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:53:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:58,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 04:53:58,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 04:53:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:58,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 04:53:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:53:59,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069649643] [2020-10-29 04:53:59,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:59,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:59,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962040446] [2020-10-29 04:53:59,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:59,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:59,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:59,141 INFO L87 Difference]: Start difference. First operand 41120 states and 55336 transitions. Second operand 7 states. [2020-10-29 04:53:59,676 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:03,093 INFO L93 Difference]: Finished difference Result 75307 states and 100692 transitions. [2020-10-29 04:54:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:54:03,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-29 04:54:03,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:03,230 INFO L225 Difference]: With dead ends: 75307 [2020-10-29 04:54:03,230 INFO L226 Difference]: Without dead ends: 34193 [2020-10-29 04:54:03,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:54:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34193 states. [2020-10-29 04:54:04,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34193 to 34169. [2020-10-29 04:54:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34169 states. [2020-10-29 04:54:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34169 states to 34169 states and 43353 transitions. [2020-10-29 04:54:04,698 INFO L78 Accepts]: Start accepts. Automaton has 34169 states and 43353 transitions. Word has length 305 [2020-10-29 04:54:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:04,699 INFO L481 AbstractCegarLoop]: Abstraction has 34169 states and 43353 transitions. [2020-10-29 04:54:04,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand 34169 states and 43353 transitions. [2020-10-29 04:54:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-29 04:54:04,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:04,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:04,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:54:04,766 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1443840806, now seen corresponding path program 1 times [2020-10-29 04:54:04,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:04,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170245494] [2020-10-29 04:54:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:04,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:05,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:09,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:09,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 04:54:09,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:09,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 04:54:09,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:09,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:54:09,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:10,420 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:10,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:10,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:10,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:10,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:54:10,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:10,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:10,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:10,638 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:54:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:10,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:10,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 04:54:10,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 04:54:10,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:10,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 04:54:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:11,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 04:54:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:11,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:11,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:54:11,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:54:11,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:11,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:54:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 147 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:54:11,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170245494] [2020-10-29 04:54:11,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:11,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:54:11,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517633106] [2020-10-29 04:54:11,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:54:11,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:11,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:54:11,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:11,250 INFO L87 Difference]: Start difference. First operand 34169 states and 43353 transitions. Second operand 7 states. [2020-10-29 04:54:11,782 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:14,518 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:54:16,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:16,913 INFO L93 Difference]: Finished difference Result 70084 states and 89224 transitions. [2020-10-29 04:54:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:54:16,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-29 04:54:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:17,035 INFO L225 Difference]: With dead ends: 70084 [2020-10-29 04:54:17,035 INFO L226 Difference]: Without dead ends: 35921 [2020-10-29 04:54:17,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:54:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35921 states. [2020-10-29 04:54:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35921 to 33138. [2020-10-29 04:54:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33138 states. [2020-10-29 04:54:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33138 states to 33138 states and 41840 transitions. [2020-10-29 04:54:18,274 INFO L78 Accepts]: Start accepts. Automaton has 33138 states and 41840 transitions. Word has length 334 [2020-10-29 04:54:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:18,275 INFO L481 AbstractCegarLoop]: Abstraction has 33138 states and 41840 transitions. [2020-10-29 04:54:18,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 33138 states and 41840 transitions. [2020-10-29 04:54:18,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-29 04:54:18,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:18,363 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:18,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:54:18,363 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:18,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1771239597, now seen corresponding path program 1 times [2020-10-29 04:54:18,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:18,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244421001] [2020-10-29 04:54:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:18,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:21,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:21,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-29 04:54:21,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:21,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3145 [2020-10-29 04:54:21,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:21,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:21,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:54:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 04:54:21,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:22,207 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:22,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:22,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:22,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:22,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:22,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:54:22,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:22,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:22,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:22,417 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:54:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:22,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:22,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:22,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:54:22,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:22,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:54:22,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:22,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:22,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:22,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:22,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:54:22,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:54:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:22,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:22,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:22,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 04:54:22,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 04:54:22,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:22,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 04:54:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 04:54:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:54:22,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 04:54:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:22,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:54:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 171 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:54:23,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244421001] [2020-10-29 04:54:23,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:23,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:54:23,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150807103] [2020-10-29 04:54:23,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:54:23,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:23,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:54:23,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:23,303 INFO L87 Difference]: Start difference. First operand 33138 states and 41840 transitions. Second operand 7 states. [2020-10-29 04:54:23,858 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:54:25,652 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 04:54:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:29,734 INFO L93 Difference]: Finished difference Result 78084 states and 100160 transitions. [2020-10-29 04:54:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:54:29,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-29 04:54:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:30,000 INFO L225 Difference]: With dead ends: 78084 [2020-10-29 04:54:30,001 INFO L226 Difference]: Without dead ends: 44952 [2020-10-29 04:54:30,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:54:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44952 states. [2020-10-29 04:54:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44952 to 44831. [2020-10-29 04:54:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44831 states. [2020-10-29 04:54:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44831 states to 44831 states and 56894 transitions. [2020-10-29 04:54:31,615 INFO L78 Accepts]: Start accepts. Automaton has 44831 states and 56894 transitions. Word has length 345 [2020-10-29 04:54:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:31,616 INFO L481 AbstractCegarLoop]: Abstraction has 44831 states and 56894 transitions. [2020-10-29 04:54:31,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 44831 states and 56894 transitions. [2020-10-29 04:54:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-29 04:54:31,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:31,705 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:31,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:54:31,705 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:31,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:31,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1683121964, now seen corresponding path program 1 times [2020-10-29 04:54:31,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:31,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618810021] [2020-10-29 04:54:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:32,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:33,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:36,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:36,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-29 04:54:36,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:54:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 04:54:36,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:36,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 04:54:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,329 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:37,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:37,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:54:37,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:37,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:37,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,557 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:54:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:54:37,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 04:54:37,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:54:37,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:54:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:37,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:54:37,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:37,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:54:37,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 04:54:37,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:37,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 04:54:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 04:54:37,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 04:54:37,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 04:54:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:37,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:37,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 04:54:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:37,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:37,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:54:37,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:54:37,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:37,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 04:54:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 164 proven. 82 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 04:54:38,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618810021] [2020-10-29 04:54:38,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:38,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:54:38,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084367585] [2020-10-29 04:54:38,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:54:38,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:38,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:54:38,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:38,172 INFO L87 Difference]: Start difference. First operand 44831 states and 56894 transitions. Second operand 7 states. [2020-10-29 04:54:38,693 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:54:43,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:43,742 INFO L93 Difference]: Finished difference Result 104226 states and 132906 transitions. [2020-10-29 04:54:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:54:43,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-29 04:54:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:43,942 INFO L225 Difference]: With dead ends: 104226 [2020-10-29 04:54:43,942 INFO L226 Difference]: Without dead ends: 59401 [2020-10-29 04:54:44,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:54:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59401 states. [2020-10-29 04:54:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59401 to 53837. [2020-10-29 04:54:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53837 states. [2020-10-29 04:54:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53837 states to 53837 states and 68942 transitions. [2020-10-29 04:54:46,230 INFO L78 Accepts]: Start accepts. Automaton has 53837 states and 68942 transitions. Word has length 357 [2020-10-29 04:54:46,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:46,231 INFO L481 AbstractCegarLoop]: Abstraction has 53837 states and 68942 transitions. [2020-10-29 04:54:46,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand 53837 states and 68942 transitions. [2020-10-29 04:54:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-29 04:54:46,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:46,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:46,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:54:46,332 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:46,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:46,332 INFO L82 PathProgramCache]: Analyzing trace with hash 369529581, now seen corresponding path program 1 times [2020-10-29 04:54:46,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:46,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773616194] [2020-10-29 04:54:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:51,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:51,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-29 04:54:51,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:54:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 04:54:51,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:51,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:54:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 369 [2020-10-29 04:54:51,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:52,321 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:52,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:52,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:52,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:52,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:52,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:54:52,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:52,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:52,545 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:54:52,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:52,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:52,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 04:54:52,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 04:54:52,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:52,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:52,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:52,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:52,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 04:54:52,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:52,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:54:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:52,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:52,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 04:54:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 04:54:52,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:52,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:54:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-29 04:54:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:53,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:54:53,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 04:54:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:53,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:54:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:54:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-29 04:54:53,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773616194] [2020-10-29 04:54:53,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:53,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:54:53,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110394559] [2020-10-29 04:54:53,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:54:53,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:53,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:54:53,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:54:53,347 INFO L87 Difference]: Start difference. First operand 53837 states and 68942 transitions. Second operand 8 states. [2020-10-29 04:54:53,833 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:54:54,667 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:54:55,438 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 159