/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:05:58,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:05:58,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:05:58,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:05:58,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:05:58,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:05:58,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:05:58,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:05:58,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:05:58,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:05:58,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:05:58,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:05:58,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:05:58,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:05:58,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:05:58,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:05:58,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:05:58,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:05:58,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:05:58,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:05:58,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:05:58,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:05:58,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:05:58,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:05:58,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:05:58,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:05:58,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:05:58,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:05:58,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:05:58,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:05:58,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:05:58,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:05:58,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:05:58,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:05:58,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:05:58,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:05:58,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:05:58,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:05:58,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:05:58,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:05:58,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:05:58,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:05:58,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:05:58,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:05:58,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:05:58,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:05:58,886 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:05:58,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:05:58,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:05:58,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:05:58,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:05:58,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:05:58,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:05:58,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:05:58,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:05:58,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:05:58,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:05:58,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:05:58,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:05:58,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:05:58,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:05:58,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:05:58,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:05:58,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:05:58,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:05:58,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:05:58,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:05:58,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:05:58,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:05:58,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:05:58,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:05:58,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:05:59,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:05:59,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:05:59,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:05:59,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:05:59,404 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:05:59,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28.c [2020-10-28 12:05:59,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23e8f5a85/f0f45a160e894756b1efb8496b3b2271/FLAG746dafb0c [2020-10-28 12:06:00,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:06:00,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label28.c [2020-10-28 12:06:00,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23e8f5a85/f0f45a160e894756b1efb8496b3b2271/FLAG746dafb0c [2020-10-28 12:06:00,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23e8f5a85/f0f45a160e894756b1efb8496b3b2271 [2020-10-28 12:06:00,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:06:00,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:06:00,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:06:00,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:06:00,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:06:00,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:06:00" (1/1) ... [2020-10-28 12:06:00,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7653d3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:00, skipping insertion in model container [2020-10-28 12:06:00,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:06:00" (1/1) ... [2020-10-28 12:06:00,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:06:00,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:06:01,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:06:01,257 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:06:01,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:06:01,565 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:06:01,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01 WrapperNode [2020-10-28 12:06:01,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:06:01,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:06:01,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:06:01,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:06:01,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01" (1/1) ... [2020-10-28 12:06:01,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01" (1/1) ... [2020-10-28 12:06:01,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01" (1/1) ... [2020-10-28 12:06:01,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01" (1/1) ... [2020-10-28 12:06:01,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01" (1/1) ... [2020-10-28 12:06:01,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01" (1/1) ... [2020-10-28 12:06:01,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01" (1/1) ... [2020-10-28 12:06:01,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:06:01,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:06:01,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:06:01,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:06:01,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:06:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:06:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:06:01,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:06:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:06:01,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:06:01,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:06:01,879 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:06:01,879 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:06:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:06:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:06:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:06:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:06:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:06:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:06:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:06:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:06:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:06:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:06:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:06:04,191 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:06:04,191 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:06:04,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:06:04 BoogieIcfgContainer [2020-10-28 12:06:04,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:06:04,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:06:04,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:06:04,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:06:04,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:06:00" (1/3) ... [2020-10-28 12:06:04,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8e78a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:06:04, skipping insertion in model container [2020-10-28 12:06:04,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:06:01" (2/3) ... [2020-10-28 12:06:04,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8e78a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:06:04, skipping insertion in model container [2020-10-28 12:06:04,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:06:04" (3/3) ... [2020-10-28 12:06:04,203 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label28.c [2020-10-28 12:06:04,215 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:06:04,221 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:06:04,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:06:04,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:06:04,264 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:06:04,265 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:06:04,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:06:04,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:06:04,265 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:06:04,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:06:04,265 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:06:04,292 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:06:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 12:06:04,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:04,302 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] [2020-10-28 12:06:04,303 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:04,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:04,309 INFO L82 PathProgramCache]: Analyzing trace with hash -471549154, now seen corresponding path program 1 times [2020-10-28 12:06:04,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:04,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281975368] [2020-10-28 12:06:04,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:05,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 12:06:05,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-28 12:06:05,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:05,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:06:05,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 12:06:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:06:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:05,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:05,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:05,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:05,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:05,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:06:05,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:05,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:05,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:06:05,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281975368] [2020-10-28 12:06:05,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:06:05,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:06:05,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972183590] [2020-10-28 12:06:05,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:05,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:05,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:05,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:05,618 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-28 12:06:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:10,103 INFO L93 Difference]: Finished difference Result 1003 states and 1799 transitions. [2020-10-28 12:06:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:06:10,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-28 12:06:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:10,130 INFO L225 Difference]: With dead ends: 1003 [2020-10-28 12:06:10,130 INFO L226 Difference]: Without dead ends: 639 [2020-10-28 12:06:10,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:10,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-28 12:06:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 622. [2020-10-28 12:06:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-10-28 12:06:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 951 transitions. [2020-10-28 12:06:10,265 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 951 transitions. Word has length 55 [2020-10-28 12:06:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:10,267 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 951 transitions. [2020-10-28 12:06:10,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 951 transitions. [2020-10-28 12:06:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 12:06:10,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:10,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:06:10,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:06:10,282 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:10,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1676767937, now seen corresponding path program 1 times [2020-10-28 12:06:10,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:10,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737971945] [2020-10-28 12:06:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:12,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:12,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:06:12,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-10-28 12:06:12,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:12,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:12,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:12,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:06:12,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:06:12,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:06:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:12,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:12,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:06:12,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:12,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:12,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:12,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:12,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:06:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:12,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:12,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:12,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:06:12,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 12:06:12,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:12,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:06:12,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:06:12,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737971945] [2020-10-28 12:06:12,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:06:12,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:06:12,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692833397] [2020-10-28 12:06:12,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:12,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:12,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:12,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:12,686 INFO L87 Difference]: Start difference. First operand 622 states and 951 transitions. Second operand 7 states. [2020-10-28 12:06:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:16,445 INFO L93 Difference]: Finished difference Result 1867 states and 2957 transitions. [2020-10-28 12:06:16,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:16,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-28 12:06:16,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:16,464 INFO L225 Difference]: With dead ends: 1867 [2020-10-28 12:06:16,464 INFO L226 Difference]: Without dead ends: 1251 [2020-10-28 12:06:16,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:16,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-10-28 12:06:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1218. [2020-10-28 12:06:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2020-10-28 12:06:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1705 transitions. [2020-10-28 12:06:16,549 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1705 transitions. Word has length 125 [2020-10-28 12:06:16,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:16,550 INFO L481 AbstractCegarLoop]: Abstraction has 1218 states and 1705 transitions. [2020-10-28 12:06:16,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:16,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1705 transitions. [2020-10-28 12:06:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 12:06:16,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:16,553 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:06:16,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:06:16,553 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:16,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:16,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1754818029, now seen corresponding path program 1 times [2020-10-28 12:06:16,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:16,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313409111] [2020-10-28 12:06:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:16,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:18,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 12:06:18,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:06:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1742 [2020-10-28 12:06:18,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:18,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:06:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:06:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:18,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:18,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:18,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:18,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:18,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:06:18,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:18,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:18,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:18,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:18,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:18,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:18,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-28 12:06:18,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:18,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:06:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:06:18,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313409111] [2020-10-28 12:06:18,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:06:18,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:06:18,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820757194] [2020-10-28 12:06:18,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:18,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:18,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:18,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:18,869 INFO L87 Difference]: Start difference. First operand 1218 states and 1705 transitions. Second operand 7 states. [2020-10-28 12:06:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:22,707 INFO L93 Difference]: Finished difference Result 3654 states and 5271 transitions. [2020-10-28 12:06:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:22,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-28 12:06:22,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:22,728 INFO L225 Difference]: With dead ends: 3654 [2020-10-28 12:06:22,729 INFO L226 Difference]: Without dead ends: 2442 [2020-10-28 12:06:22,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-10-28 12:06:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2217. [2020-10-28 12:06:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-10-28 12:06:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2967 transitions. [2020-10-28 12:06:22,845 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2967 transitions. Word has length 135 [2020-10-28 12:06:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:22,848 INFO L481 AbstractCegarLoop]: Abstraction has 2217 states and 2967 transitions. [2020-10-28 12:06:22,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2967 transitions. [2020-10-28 12:06:22,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-28 12:06:22,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:22,864 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:22,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:06:22,865 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:22,866 INFO L82 PathProgramCache]: Analyzing trace with hash 725465442, now seen corresponding path program 1 times [2020-10-28 12:06:22,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:22,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848073088] [2020-10-28 12:06:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:27,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:27,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-28 12:06:27,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:06:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 12:06:27,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:27,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:06:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:06:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:06:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:28,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:06:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:28,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:06:28,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:28,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 12:06:28,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:28,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:28,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:06:28,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:06:28,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 12:06:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:28,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:06:28,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:28,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:06:28,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:28,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 12:06:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 94 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:06:28,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848073088] [2020-10-28 12:06:28,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:28,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:28,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997158132] [2020-10-28 12:06:28,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:28,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:28,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:28,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:28,650 INFO L87 Difference]: Start difference. First operand 2217 states and 2967 transitions. Second operand 7 states. [2020-10-28 12:06:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:31,430 INFO L93 Difference]: Finished difference Result 4486 states and 6062 transitions. [2020-10-28 12:06:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:31,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-28 12:06:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:31,446 INFO L225 Difference]: With dead ends: 4486 [2020-10-28 12:06:31,446 INFO L226 Difference]: Without dead ends: 2275 [2020-10-28 12:06:31,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:06:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2020-10-28 12:06:31,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2219. [2020-10-28 12:06:31,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2020-10-28 12:06:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2945 transitions. [2020-10-28 12:06:31,524 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2945 transitions. Word has length 198 [2020-10-28 12:06:31,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:31,524 INFO L481 AbstractCegarLoop]: Abstraction has 2219 states and 2945 transitions. [2020-10-28 12:06:31,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2945 transitions. [2020-10-28 12:06:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 12:06:31,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:31,530 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:31,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:06:31,530 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:31,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1514706274, now seen corresponding path program 1 times [2020-10-28 12:06:31,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:31,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150694536] [2020-10-28 12:06:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:34,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:34,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 12:06:34,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:34,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2879 [2020-10-28 12:06:34,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:34,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:34,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:34,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:06:34,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:06:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:34,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:34,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:34,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:34,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:06:34,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:34,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:34,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:34,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:34,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:34,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:34,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:34,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:34,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 12:06:34,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:34,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:06:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:35,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:35,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:35,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:06:35,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:35,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:06:35,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:35,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150694536] [2020-10-28 12:06:35,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:35,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:35,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014755161] [2020-10-28 12:06:35,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:35,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:35,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:35,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:35,221 INFO L87 Difference]: Start difference. First operand 2219 states and 2945 transitions. Second operand 7 states. [2020-10-28 12:06:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:39,334 INFO L93 Difference]: Finished difference Result 5389 states and 8118 transitions. [2020-10-28 12:06:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:39,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-28 12:06:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:39,370 INFO L225 Difference]: With dead ends: 5389 [2020-10-28 12:06:39,370 INFO L226 Difference]: Without dead ends: 3176 [2020-10-28 12:06:39,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2020-10-28 12:06:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 3023. [2020-10-28 12:06:39,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3023 states. [2020-10-28 12:06:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 3961 transitions. [2020-10-28 12:06:39,543 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 3961 transitions. Word has length 251 [2020-10-28 12:06:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:39,544 INFO L481 AbstractCegarLoop]: Abstraction has 3023 states and 3961 transitions. [2020-10-28 12:06:39,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:39,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 3961 transitions. [2020-10-28 12:06:39,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-28 12:06:39,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:39,551 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:39,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:06:39,551 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:39,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:39,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1469502141, now seen corresponding path program 1 times [2020-10-28 12:06:39,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:39,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546056157] [2020-10-28 12:06:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:39,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:39,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:41,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:43,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:44,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:44,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-28 12:06:44,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:06:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 12:06:44,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:44,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:06:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:44,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:44,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:44,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:44,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:06:44,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:44,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:44,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:44,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:44,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:45,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:45,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:45,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:45,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 12:06:45,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:45,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:06:45,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:06:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:06:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:45,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:45,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:06:45,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:45,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:06:45,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:45,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:45,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:45,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:06:45,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:45,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 12:06:45,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546056157] [2020-10-28 12:06:45,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:45,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:45,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710214464] [2020-10-28 12:06:45,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:45,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:45,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:45,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:45,281 INFO L87 Difference]: Start difference. First operand 3023 states and 3961 transitions. Second operand 5 states. [2020-10-28 12:06:47,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:47,923 INFO L93 Difference]: Finished difference Result 7015 states and 9573 transitions. [2020-10-28 12:06:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:06:47,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-28 12:06:47,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:47,947 INFO L225 Difference]: With dead ends: 7015 [2020-10-28 12:06:47,947 INFO L226 Difference]: Without dead ends: 4186 [2020-10-28 12:06:47,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:06:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2020-10-28 12:06:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 4175. [2020-10-28 12:06:48,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4175 states. [2020-10-28 12:06:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4175 states to 4175 states and 5356 transitions. [2020-10-28 12:06:48,090 INFO L78 Accepts]: Start accepts. Automaton has 4175 states and 5356 transitions. Word has length 266 [2020-10-28 12:06:48,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:48,090 INFO L481 AbstractCegarLoop]: Abstraction has 4175 states and 5356 transitions. [2020-10-28 12:06:48,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:06:48,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4175 states and 5356 transitions. [2020-10-28 12:06:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-28 12:06:48,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:48,098 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:48,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:06:48,098 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash -534832786, now seen corresponding path program 1 times [2020-10-28 12:06:48,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:48,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104441876] [2020-10-28 12:06:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:48,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-28 12:06:50,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2565 [2020-10-28 12:06:50,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:06:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:06:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:50,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:06:50,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:50,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:50,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:51,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:51,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:51,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:06:51,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:51,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:06:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:51,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:51,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:06:51,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:51,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 12:06:51,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:51,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:51,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 12:06:51,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:06:51,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104441876] [2020-10-28 12:06:51,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:51,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:51,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453069342] [2020-10-28 12:06:51,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:51,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:51,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:51,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:51,471 INFO L87 Difference]: Start difference. First operand 4175 states and 5356 transitions. Second operand 7 states. [2020-10-28 12:06:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:55,555 INFO L93 Difference]: Finished difference Result 10328 states and 13661 transitions. [2020-10-28 12:06:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:06:55,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-28 12:06:55,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:55,591 INFO L225 Difference]: With dead ends: 10328 [2020-10-28 12:06:55,592 INFO L226 Difference]: Without dead ends: 6347 [2020-10-28 12:06:55,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2020-10-28 12:06:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 6328. [2020-10-28 12:06:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6328 states. [2020-10-28 12:06:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 8239 transitions. [2020-10-28 12:06:55,796 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 8239 transitions. Word has length 272 [2020-10-28 12:06:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:55,797 INFO L481 AbstractCegarLoop]: Abstraction has 6328 states and 8239 transitions. [2020-10-28 12:06:55,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 8239 transitions. [2020-10-28 12:06:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-28 12:06:55,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:55,806 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:55,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:06:55,806 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:55,807 INFO L82 PathProgramCache]: Analyzing trace with hash 973396250, now seen corresponding path program 1 times [2020-10-28 12:06:55,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:55,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99946293] [2020-10-28 12:06:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:55,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:56,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:56,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-28 12:06:56,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:56,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 913 [2020-10-28 12:06:56,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:56,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:06:56,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 12:06:56,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:56,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:56,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:56,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:56,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:56,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:06:56,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:56,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:56,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:56,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:57,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:57,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:06:57,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:57,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:57,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:57,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:57,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:57,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:06:57,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 12:06:57,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:57,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:06:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-28 12:06:57,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99946293] [2020-10-28 12:06:57,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:57,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:06:57,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742590737] [2020-10-28 12:06:57,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:06:57,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:57,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:06:57,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:06:57,383 INFO L87 Difference]: Start difference. First operand 6328 states and 8239 transitions. Second operand 5 states. [2020-10-28 12:07:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:00,709 INFO L93 Difference]: Finished difference Result 13625 states and 17929 transitions. [2020-10-28 12:07:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:07:00,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-10-28 12:07:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:00,750 INFO L225 Difference]: With dead ends: 13625 [2020-10-28 12:07:00,750 INFO L226 Difference]: Without dead ends: 7491 [2020-10-28 12:07:00,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:07:00,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7491 states. [2020-10-28 12:07:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7491 to 6912. [2020-10-28 12:07:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6912 states. [2020-10-28 12:07:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 8940 transitions. [2020-10-28 12:07:01,029 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 8940 transitions. Word has length 282 [2020-10-28 12:07:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:01,030 INFO L481 AbstractCegarLoop]: Abstraction has 6912 states and 8940 transitions. [2020-10-28 12:07:01,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:07:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 8940 transitions. [2020-10-28 12:07:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-28 12:07:01,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:01,039 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:01,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:07:01,040 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:01,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:01,040 INFO L82 PathProgramCache]: Analyzing trace with hash 684586708, now seen corresponding path program 1 times [2020-10-28 12:07:01,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:01,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77944262] [2020-10-28 12:07:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:03,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:03,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:03,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-28 12:07:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:07:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2298 [2020-10-28 12:07:03,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:03,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:07:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:07:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:07:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:03,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:03,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:03,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:03,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:03,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:03,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:03,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:03,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:03,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:07:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 12:07:03,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:03,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:07:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:07:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:03,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:03,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:07:03,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:03,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 12:07:03,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:03,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:03,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:07:03,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 122 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:07:04,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77944262] [2020-10-28 12:07:04,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:04,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:04,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906547667] [2020-10-28 12:07:04,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:04,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:04,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:04,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:04,116 INFO L87 Difference]: Start difference. First operand 6912 states and 8940 transitions. Second operand 7 states. [2020-10-28 12:07:08,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:08,918 INFO L93 Difference]: Finished difference Result 15384 states and 20209 transitions. [2020-10-28 12:07:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:07:08,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-10-28 12:07:08,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:08,959 INFO L225 Difference]: With dead ends: 15384 [2020-10-28 12:07:08,959 INFO L226 Difference]: Without dead ends: 8666 [2020-10-28 12:07:08,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8666 states. [2020-10-28 12:07:09,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8666 to 8462. [2020-10-28 12:07:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8462 states. [2020-10-28 12:07:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 10915 transitions. [2020-10-28 12:07:09,211 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 10915 transitions. Word has length 282 [2020-10-28 12:07:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:09,212 INFO L481 AbstractCegarLoop]: Abstraction has 8462 states and 10915 transitions. [2020-10-28 12:07:09,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 10915 transitions. [2020-10-28 12:07:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-28 12:07:09,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:09,223 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:09,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:07:09,223 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:09,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1006733031, now seen corresponding path program 1 times [2020-10-28 12:07:09,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:09,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778847576] [2020-10-28 12:07:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:09,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:10,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:10,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:10,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-28 12:07:10,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-10-28 12:07:10,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:10,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:07:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:07:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 12:07:10,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:10,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:10,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:10,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:10,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:07:10,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:10,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:10,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:10,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:10,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:07:10,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:10,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:10,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:10,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:10,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 12:07:10,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:10,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:07:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:10,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:10,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:10,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:07:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 12:07:10,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:10,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 12:07:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 12:07:11,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778847576] [2020-10-28 12:07:11,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:11,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:07:11,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534005728] [2020-10-28 12:07:11,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:07:11,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:11,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:07:11,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:07:11,096 INFO L87 Difference]: Start difference. First operand 8462 states and 10915 transitions. Second operand 6 states. [2020-10-28 12:07:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:14,045 INFO L93 Difference]: Finished difference Result 16731 states and 21677 transitions. [2020-10-28 12:07:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:07:14,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 293 [2020-10-28 12:07:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:14,080 INFO L225 Difference]: With dead ends: 16731 [2020-10-28 12:07:14,081 INFO L226 Difference]: Without dead ends: 8463 [2020-10-28 12:07:14,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8463 states. [2020-10-28 12:07:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8463 to 8445. [2020-10-28 12:07:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8445 states. [2020-10-28 12:07:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8445 states to 8445 states and 10522 transitions. [2020-10-28 12:07:14,305 INFO L78 Accepts]: Start accepts. Automaton has 8445 states and 10522 transitions. Word has length 293 [2020-10-28 12:07:14,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:14,306 INFO L481 AbstractCegarLoop]: Abstraction has 8445 states and 10522 transitions. [2020-10-28 12:07:14,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:07:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 8445 states and 10522 transitions. [2020-10-28 12:07:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-28 12:07:14,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:14,316 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:14,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:07:14,316 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1085332190, now seen corresponding path program 1 times [2020-10-28 12:07:14,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:14,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486563127] [2020-10-28 12:07:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:14,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:14,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 12:07:14,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:14,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-28 12:07:14,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:14,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:07:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:07:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:14,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:14,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:14,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:14,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:07:14,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:14,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:15,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:15,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:15,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:15,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:15,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:07:15,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:15,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:15,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:15,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:15,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:07:15,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:15,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:15,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:15,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:07:15,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 12:07:15,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:15,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:15,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:07:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:07:15,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486563127] [2020-10-28 12:07:15,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:15,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:15,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398262767] [2020-10-28 12:07:15,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:15,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:15,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:15,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:15,628 INFO L87 Difference]: Start difference. First operand 8445 states and 10522 transitions. Second operand 7 states. [2020-10-28 12:07:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:19,699 INFO L93 Difference]: Finished difference Result 18073 states and 22759 transitions. [2020-10-28 12:07:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:07:19,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-28 12:07:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:19,737 INFO L225 Difference]: With dead ends: 18073 [2020-10-28 12:07:19,737 INFO L226 Difference]: Without dead ends: 9822 [2020-10-28 12:07:19,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:07:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9822 states. [2020-10-28 12:07:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9822 to 9783. [2020-10-28 12:07:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9783 states. [2020-10-28 12:07:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9783 states to 9783 states and 12094 transitions. [2020-10-28 12:07:20,049 INFO L78 Accepts]: Start accepts. Automaton has 9783 states and 12094 transitions. Word has length 296 [2020-10-28 12:07:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:20,050 INFO L481 AbstractCegarLoop]: Abstraction has 9783 states and 12094 transitions. [2020-10-28 12:07:20,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 9783 states and 12094 transitions. [2020-10-28 12:07:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-28 12:07:20,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:20,060 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:20,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:07:20,061 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:20,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:20,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1583199677, now seen corresponding path program 1 times [2020-10-28 12:07:20,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:20,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678754821] [2020-10-28 12:07:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:20,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:21,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:21,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-28 12:07:21,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:07:21,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-10-28 12:07:21,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:21,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:21,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:21,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:07:21,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:07:21,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:21,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:21,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:21,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:21,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:21,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:21,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:21,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:21,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:21,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:21,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:07:21,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:21,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:07:21,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:21,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:22,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:22,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:07:22,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:07:22,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:22,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:07:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:07:22,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678754821] [2020-10-28 12:07:22,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:22,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:22,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053980627] [2020-10-28 12:07:22,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:22,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:22,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:22,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:22,254 INFO L87 Difference]: Start difference. First operand 9783 states and 12094 transitions. Second operand 7 states. [2020-10-28 12:07:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:27,002 INFO L93 Difference]: Finished difference Result 21099 states and 26273 transitions. [2020-10-28 12:07:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:07:27,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-28 12:07:27,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:27,040 INFO L225 Difference]: With dead ends: 21099 [2020-10-28 12:07:27,040 INFO L226 Difference]: Without dead ends: 11510 [2020-10-28 12:07:27,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-10-28 12:07:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 11304. [2020-10-28 12:07:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11304 states. [2020-10-28 12:07:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11304 states to 11304 states and 13758 transitions. [2020-10-28 12:07:27,340 INFO L78 Accepts]: Start accepts. Automaton has 11304 states and 13758 transitions. Word has length 299 [2020-10-28 12:07:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:27,341 INFO L481 AbstractCegarLoop]: Abstraction has 11304 states and 13758 transitions. [2020-10-28 12:07:27,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 11304 states and 13758 transitions. [2020-10-28 12:07:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 12:07:27,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:27,350 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:27,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:07:27,351 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:27,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1242211868, now seen corresponding path program 1 times [2020-10-28 12:07:27,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:27,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234157783] [2020-10-28 12:07:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:27,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:30,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:30,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 12:07:30,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:30,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2638 [2020-10-28 12:07:30,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:30,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:30,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:30,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:07:30,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 12:07:30,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:30,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:30,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:30,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:30,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:07:30,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:30,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:30,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:30,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:30,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:07:30,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:30,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:07:30,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:30,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:30,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:30,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:07:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:30,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:30,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:30,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 12:07:30,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:07:30,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:30,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:07:30,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:07:30,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234157783] [2020-10-28 12:07:30,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:30,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:07:30,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273985372] [2020-10-28 12:07:30,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:07:30,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:30,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:07:30,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:07:30,510 INFO L87 Difference]: Start difference. First operand 11304 states and 13758 transitions. Second operand 5 states. [2020-10-28 12:07:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:33,988 INFO L93 Difference]: Finished difference Result 25264 states and 30969 transitions. [2020-10-28 12:07:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:07:33,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-28 12:07:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:34,029 INFO L225 Difference]: With dead ends: 25264 [2020-10-28 12:07:34,029 INFO L226 Difference]: Without dead ends: 13580 [2020-10-28 12:07:34,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:07:34,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2020-10-28 12:07:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 13376. [2020-10-28 12:07:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13376 states. [2020-10-28 12:07:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13376 states to 13376 states and 16085 transitions. [2020-10-28 12:07:34,357 INFO L78 Accepts]: Start accepts. Automaton has 13376 states and 16085 transitions. Word has length 325 [2020-10-28 12:07:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:34,357 INFO L481 AbstractCegarLoop]: Abstraction has 13376 states and 16085 transitions. [2020-10-28 12:07:34,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:07:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 13376 states and 16085 transitions. [2020-10-28 12:07:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-28 12:07:34,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:34,371 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:07:34,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:07:34,372 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:34,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:34,372 INFO L82 PathProgramCache]: Analyzing trace with hash 422686106, now seen corresponding path program 1 times [2020-10-28 12:07:34,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:34,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807148330] [2020-10-28 12:07:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:34,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:34,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:39,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:39,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-28 12:07:39,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:07:39,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 12:07:39,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:39,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-28 12:07:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:07:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:39,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:39,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:39,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:39,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:39,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:39,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:39,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:39,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:39,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:39,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:39,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:39,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:07:39,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:39,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:39,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:39,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:39,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:39,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:07:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-28 12:07:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:39,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:07:39,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 12:07:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:39,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:07:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 12:07:40,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807148330] [2020-10-28 12:07:40,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:40,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:07:40,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406857066] [2020-10-28 12:07:40,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:07:40,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:40,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:07:40,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:07:40,177 INFO L87 Difference]: Start difference. First operand 13376 states and 16085 transitions. Second operand 8 states. [2020-10-28 12:07:45,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:45,249 INFO L93 Difference]: Finished difference Result 28686 states and 34618 transitions. [2020-10-28 12:07:45,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:07:45,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 364 [2020-10-28 12:07:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:45,288 INFO L225 Difference]: With dead ends: 28686 [2020-10-28 12:07:45,288 INFO L226 Difference]: Without dead ends: 13779 [2020-10-28 12:07:45,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:07:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13779 states. [2020-10-28 12:07:45,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13779 to 13189. [2020-10-28 12:07:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13189 states. [2020-10-28 12:07:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13189 states to 13189 states and 15653 transitions. [2020-10-28 12:07:45,603 INFO L78 Accepts]: Start accepts. Automaton has 13189 states and 15653 transitions. Word has length 364 [2020-10-28 12:07:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:45,604 INFO L481 AbstractCegarLoop]: Abstraction has 13189 states and 15653 transitions. [2020-10-28 12:07:45,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:07:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 13189 states and 15653 transitions. [2020-10-28 12:07:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-28 12:07:45,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:45,619 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:07:45,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:07:45,619 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:45,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1607748866, now seen corresponding path program 1 times [2020-10-28 12:07:45,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:45,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898486316] [2020-10-28 12:07:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:46,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:47,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:47,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-28 12:07:47,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:47,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1848 [2020-10-28 12:07:47,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:47,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:07:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:07:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:47,786 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:07:47,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:47,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:47,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:47,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:47,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:07:47,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:47,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:47,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:47,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:47,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:47,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:07:47,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:47,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:47,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:47,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:47,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:47,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:47,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:07:47,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:07:47,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:47,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 12:07:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:07:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:48,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:48,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:07:48,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 12:07:48,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:48,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:48,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:07:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:07:48,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898486316] [2020-10-28 12:07:48,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:48,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:48,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332609292] [2020-10-28 12:07:48,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:48,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:48,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:48,434 INFO L87 Difference]: Start difference. First operand 13189 states and 15653 transitions. Second operand 7 states. [2020-10-28 12:07:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:52,771 INFO L93 Difference]: Finished difference Result 26438 states and 31346 transitions. [2020-10-28 12:07:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:07:52,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-28 12:07:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:52,807 INFO L225 Difference]: With dead ends: 26438 [2020-10-28 12:07:52,807 INFO L226 Difference]: Without dead ends: 13443 [2020-10-28 12:07:52,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13443 states. [2020-10-28 12:07:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13443 to 13406. [2020-10-28 12:07:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13406 states. [2020-10-28 12:07:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 15400 transitions. [2020-10-28 12:07:53,243 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 15400 transitions. Word has length 365 [2020-10-28 12:07:53,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:53,244 INFO L481 AbstractCegarLoop]: Abstraction has 13406 states and 15400 transitions. [2020-10-28 12:07:53,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:53,244 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 15400 transitions. [2020-10-28 12:07:53,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-28 12:07:53,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:53,260 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:53,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:07:53,261 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:53,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:53,263 INFO L82 PathProgramCache]: Analyzing trace with hash -639590106, now seen corresponding path program 1 times [2020-10-28 12:07:53,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:53,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047162637] [2020-10-28 12:07:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:57,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-28 12:07:57,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:57,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3978 [2020-10-28 12:07:57,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:57,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-28 12:07:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:07:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:57,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:57,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:57,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:57,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:57,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:57,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:57,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:57,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:57,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:57,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:57,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:57,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:07:57,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:57,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:57,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:57,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:57,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:57,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:57,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:07:57,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:57,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:07:57,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:57,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:57,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:57,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:57,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:07:57,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-28 12:07:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:57,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:57,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:07:57,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:07:57,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:57,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:07:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 344 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-28 12:07:58,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047162637] [2020-10-28 12:07:58,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:58,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:58,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776908510] [2020-10-28 12:07:58,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:58,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:58,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:58,079 INFO L87 Difference]: Start difference. First operand 13406 states and 15400 transitions. Second operand 7 states. [2020-10-28 12:08:00,253 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 12:08:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:01,686 INFO L93 Difference]: Finished difference Result 26849 states and 30860 transitions. [2020-10-28 12:08:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:08:01,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2020-10-28 12:08:01,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:01,728 INFO L225 Difference]: With dead ends: 26849 [2020-10-28 12:08:01,729 INFO L226 Difference]: Without dead ends: 12871 [2020-10-28 12:08:01,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12871 states. [2020-10-28 12:08:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12871 to 12644. [2020-10-28 12:08:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12644 states. [2020-10-28 12:08:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12644 states to 12644 states and 14485 transitions. [2020-10-28 12:08:02,020 INFO L78 Accepts]: Start accepts. Automaton has 12644 states and 14485 transitions. Word has length 385 [2020-10-28 12:08:02,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:02,021 INFO L481 AbstractCegarLoop]: Abstraction has 12644 states and 14485 transitions. [2020-10-28 12:08:02,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12644 states and 14485 transitions. [2020-10-28 12:08:02,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-28 12:08:02,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:02,038 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:02,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:08:02,039 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:02,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:02,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1925273678, now seen corresponding path program 1 times [2020-10-28 12:08:02,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:02,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057030737] [2020-10-28 12:08:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:02,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:03,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:04,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:04,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-28 12:08:04,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:08:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2734 [2020-10-28 12:08:04,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:04,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:08:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:08:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:05,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:05,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:08:05,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:05,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:05,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:05,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:05,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:05,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:08:05,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:08:05,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:05,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:08:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:05,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:08:05,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:08:05,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:05,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:08:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:08:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:05,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:05,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:08:05,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:08:05,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:05,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:08:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:08:05,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057030737] [2020-10-28 12:08:05,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:05,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:05,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438804947] [2020-10-28 12:08:05,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:05,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:05,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:05,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:05,598 INFO L87 Difference]: Start difference. First operand 12644 states and 14485 transitions. Second operand 7 states. [2020-10-28 12:08:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:10,509 INFO L93 Difference]: Finished difference Result 27377 states and 31379 transitions. [2020-10-28 12:08:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:08:10,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-28 12:08:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:10,541 INFO L225 Difference]: With dead ends: 27377 [2020-10-28 12:08:10,541 INFO L226 Difference]: Without dead ends: 14547 [2020-10-28 12:08:10,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:08:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14547 states. [2020-10-28 12:08:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14547 to 12065. [2020-10-28 12:08:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12065 states. [2020-10-28 12:08:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12065 states to 12065 states and 13811 transitions. [2020-10-28 12:08:10,823 INFO L78 Accepts]: Start accepts. Automaton has 12065 states and 13811 transitions. Word has length 392 [2020-10-28 12:08:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:10,823 INFO L481 AbstractCegarLoop]: Abstraction has 12065 states and 13811 transitions. [2020-10-28 12:08:10,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 12065 states and 13811 transitions. [2020-10-28 12:08:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-28 12:08:10,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:10,842 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:08:10,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:08:10,842 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:10,843 INFO L82 PathProgramCache]: Analyzing trace with hash 482660546, now seen corresponding path program 1 times [2020-10-28 12:08:10,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:10,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789471378] [2020-10-28 12:08:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:12,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:12,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-28 12:08:12,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:12,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-10-28 12:08:12,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:12,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:08:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:08:12,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:13,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:13,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:13,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:13,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:13,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:08:13,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:13,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:13,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:13,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:13,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:13,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:08:13,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:13,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:13,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:13,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:08:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:13,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:13,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:08:13,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 12:08:13,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:13,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:08:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:13,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:08:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:13,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:13,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:13,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:08:13,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:08:13,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:13,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:08:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-28 12:08:13,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789471378] [2020-10-28 12:08:13,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:13,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:13,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306745675] [2020-10-28 12:08:13,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:13,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:13,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:13,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:13,664 INFO L87 Difference]: Start difference. First operand 12065 states and 13811 transitions. Second operand 7 states. [2020-10-28 12:08:18,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:18,291 INFO L93 Difference]: Finished difference Result 24727 states and 28275 transitions. [2020-10-28 12:08:18,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:08:18,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-28 12:08:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:18,325 INFO L225 Difference]: With dead ends: 24727 [2020-10-28 12:08:18,325 INFO L226 Difference]: Without dead ends: 12856 [2020-10-28 12:08:18,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12856 states. [2020-10-28 12:08:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12856 to 12253. [2020-10-28 12:08:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12253 states. [2020-10-28 12:08:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 13964 transitions. [2020-10-28 12:08:18,583 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 13964 transitions. Word has length 394 [2020-10-28 12:08:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:18,583 INFO L481 AbstractCegarLoop]: Abstraction has 12253 states and 13964 transitions. [2020-10-28 12:08:18,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 13964 transitions. [2020-10-28 12:08:18,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-28 12:08:18,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:18,596 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:18,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:08:18,596 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:18,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:18,596 INFO L82 PathProgramCache]: Analyzing trace with hash 190228318, now seen corresponding path program 1 times [2020-10-28 12:08:18,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:18,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001992468] [2020-10-28 12:08:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-28 12:08:19,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-28 12:08:19,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:08:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:08:19,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:19,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:08:19,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:19,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:19,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:08:19,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:08:19,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:19,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:19,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:08:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:19,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:08:19,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:08:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:08:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:19,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:19,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:08:19,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 12:08:19,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:19,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:08:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:08:19,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001992468] [2020-10-28 12:08:19,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:19,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:19,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768783202] [2020-10-28 12:08:19,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:19,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:19,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:19,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:19,965 INFO L87 Difference]: Start difference. First operand 12253 states and 13964 transitions. Second operand 7 states. [2020-10-28 12:08:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:23,622 INFO L93 Difference]: Finished difference Result 26108 states and 29864 transitions. [2020-10-28 12:08:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:08:23,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-28 12:08:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:23,651 INFO L225 Difference]: With dead ends: 26108 [2020-10-28 12:08:23,651 INFO L226 Difference]: Without dead ends: 14049 [2020-10-28 12:08:23,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:08:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14049 states. [2020-10-28 12:08:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14049 to 13809. [2020-10-28 12:08:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13809 states. [2020-10-28 12:08:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13809 states to 13809 states and 15781 transitions. [2020-10-28 12:08:24,030 INFO L78 Accepts]: Start accepts. Automaton has 13809 states and 15781 transitions. Word has length 412 [2020-10-28 12:08:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:24,030 INFO L481 AbstractCegarLoop]: Abstraction has 13809 states and 15781 transitions. [2020-10-28 12:08:24,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 13809 states and 15781 transitions. [2020-10-28 12:08:24,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-28 12:08:24,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:24,048 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, 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, 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, 3, 3, 3, 3, 3, 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] [2020-10-28 12:08:24,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:08:24,048 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1395299671, now seen corresponding path program 1 times [2020-10-28 12:08:24,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:24,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048146364] [2020-10-28 12:08:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:24,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:25,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:25,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-28 12:08:25,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:25,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1825 [2020-10-28 12:08:25,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:25,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:25,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:08:25,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:08:25,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:26,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:26,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:26,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:08:26,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:26,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:08:26,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:26,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:08:26,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:26,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:26,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:08:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:26,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:26,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 12:08:26,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:08:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:08:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:26,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:26,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:08:26,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 12:08:26,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:26,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:08:26,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:08:26,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048146364] [2020-10-28 12:08:26,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:26,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:26,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673665730] [2020-10-28 12:08:26,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:26,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:26,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:26,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:26,885 INFO L87 Difference]: Start difference. First operand 13809 states and 15781 transitions. Second operand 7 states. [2020-10-28 12:08:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:30,487 INFO L93 Difference]: Finished difference Result 27650 states and 31615 transitions. [2020-10-28 12:08:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:08:30,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-28 12:08:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:30,513 INFO L225 Difference]: With dead ends: 27650 [2020-10-28 12:08:30,513 INFO L226 Difference]: Without dead ends: 14035 [2020-10-28 12:08:30,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:08:30,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14035 states. [2020-10-28 12:08:30,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14035 to 13997. [2020-10-28 12:08:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13997 states. [2020-10-28 12:08:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13997 states to 13997 states and 15991 transitions. [2020-10-28 12:08:30,837 INFO L78 Accepts]: Start accepts. Automaton has 13997 states and 15991 transitions. Word has length 431 [2020-10-28 12:08:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:30,838 INFO L481 AbstractCegarLoop]: Abstraction has 13997 states and 15991 transitions. [2020-10-28 12:08:30,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13997 states and 15991 transitions. [2020-10-28 12:08:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-28 12:08:30,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:30,853 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:30,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:08:30,853 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:30,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:30,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1549564937, now seen corresponding path program 1 times [2020-10-28 12:08:30,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:30,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203699573] [2020-10-28 12:08:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:31,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:33,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:35,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:35,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-28 12:08:35,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:08:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 12:08:35,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:35,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:08:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:08:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:36,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:08:36,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:08:36,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 12:08:36,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:08:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:08:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:08:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:08:36,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:08:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:08:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:08:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-28 12:08:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:36,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:36,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:36,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 12:08:36,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:36,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:08:36,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:36,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-28 12:08:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:36,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 236 proven. 93 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:08:36,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203699573] [2020-10-28 12:08:36,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:36,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:08:36,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387854289] [2020-10-28 12:08:36,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:08:36,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:36,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:08:36,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:36,961 INFO L87 Difference]: Start difference. First operand 13997 states and 15991 transitions. Second operand 7 states. [2020-10-28 12:08:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:40,423 INFO L93 Difference]: Finished difference Result 28597 states and 32628 transitions. [2020-10-28 12:08:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:08:40,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-28 12:08:40,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:40,452 INFO L225 Difference]: With dead ends: 28597 [2020-10-28 12:08:40,452 INFO L226 Difference]: Without dead ends: 14794 [2020-10-28 12:08:40,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:08:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14794 states. [2020-10-28 12:08:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14794 to 14185. [2020-10-28 12:08:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14185 states. [2020-10-28 12:08:40,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14185 states to 14185 states and 16188 transitions. [2020-10-28 12:08:40,774 INFO L78 Accepts]: Start accepts. Automaton has 14185 states and 16188 transitions. Word has length 431 [2020-10-28 12:08:40,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:40,774 INFO L481 AbstractCegarLoop]: Abstraction has 14185 states and 16188 transitions. [2020-10-28 12:08:40,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:08:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 14185 states and 16188 transitions. [2020-10-28 12:08:40,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-28 12:08:40,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:40,788 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:08:40,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:08:40,789 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:40,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:40,789 INFO L82 PathProgramCache]: Analyzing trace with hash 2025534938, now seen corresponding path program 1 times [2020-10-28 12:08:40,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:40,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019910130] [2020-10-28 12:08:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:40,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:42,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-28 12:08:42,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:08:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-28 12:08:42,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:42,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:08:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-28 12:08:42,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:42,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:42,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:08:42,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:42,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:08:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:08:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:42,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:42,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:08:42,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 12:08:42,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:42,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:08:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:42,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:08:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:43,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:43,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 12:08:43,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 12:08:43,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:43,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-28 12:08:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:08:43,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-28 12:08:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:43,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:43,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:43,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:08:43,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:08:43,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:43,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 12:08:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:43,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-28 12:08:43,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019910130] [2020-10-28 12:08:43,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:43,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:08:43,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131936652] [2020-10-28 12:08:43,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:08:43,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:08:43,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:08:43,371 INFO L87 Difference]: Start difference. First operand 14185 states and 16188 transitions. Second operand 6 states. [2020-10-28 12:08:45,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:45,713 INFO L93 Difference]: Finished difference Result 28012 states and 31983 transitions. [2020-10-28 12:08:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:08:45,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 431 [2020-10-28 12:08:45,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:45,745 INFO L225 Difference]: With dead ends: 28012 [2020-10-28 12:08:45,745 INFO L226 Difference]: Without dead ends: 14021 [2020-10-28 12:08:45,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:08:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14021 states. [2020-10-28 12:08:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14021 to 13979. [2020-10-28 12:08:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13979 states. [2020-10-28 12:08:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13979 states to 13979 states and 15931 transitions. [2020-10-28 12:08:45,955 INFO L78 Accepts]: Start accepts. Automaton has 13979 states and 15931 transitions. Word has length 431 [2020-10-28 12:08:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:45,956 INFO L481 AbstractCegarLoop]: Abstraction has 13979 states and 15931 transitions. [2020-10-28 12:08:45,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:08:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 13979 states and 15931 transitions. [2020-10-28 12:08:45,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-28 12:08:45,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:45,968 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:45,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:08:45,968 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:45,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1850408660, now seen corresponding path program 1 times [2020-10-28 12:08:45,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:45,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010146473] [2020-10-28 12:08:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:46,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:47,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:51,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-28 12:08:51,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:08:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 12:08:51,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:51,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:08:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-28 12:08:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 12:08:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:51,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:08:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:51,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:51,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:08:51,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:08:51,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:51,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:08:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:51,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:51,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:51,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:08:51,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:08:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:51,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:08:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:08:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:08:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:51,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:51,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:51,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:08:51,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:08:51,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:08:51,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:51,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:08:51,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:51,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-28 12:08:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:51,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:51,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:08:51,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:08:51,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:08:51,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 12:08:51,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:08:51,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:08:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:08:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:08:51,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:08:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:08:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 149 proven. 3 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-10-28 12:08:52,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010146473] [2020-10-28 12:08:52,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:08:52,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:08:52,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102274697] [2020-10-28 12:08:52,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:08:52,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:08:52,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:08:52,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:08:52,004 INFO L87 Difference]: Start difference. First operand 13979 states and 15931 transitions. Second operand 6 states. [2020-10-28 12:08:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:08:55,673 INFO L93 Difference]: Finished difference Result 17226 states and 19633 transitions. [2020-10-28 12:08:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:08:55,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 460 [2020-10-28 12:08:55,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:08:55,711 INFO L225 Difference]: With dead ends: 17226 [2020-10-28 12:08:55,712 INFO L226 Difference]: Without dead ends: 17223 [2020-10-28 12:08:55,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:08:55,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17223 states. [2020-10-28 12:08:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17223 to 14359. [2020-10-28 12:08:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14359 states. [2020-10-28 12:08:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14359 states to 14359 states and 16406 transitions. [2020-10-28 12:08:55,979 INFO L78 Accepts]: Start accepts. Automaton has 14359 states and 16406 transitions. Word has length 460 [2020-10-28 12:08:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:08:55,980 INFO L481 AbstractCegarLoop]: Abstraction has 14359 states and 16406 transitions. [2020-10-28 12:08:55,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:08:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 14359 states and 16406 transitions. [2020-10-28 12:08:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-28 12:08:55,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:08:55,997 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:08:55,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:08:55,997 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:08:55,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:08:55,998 INFO L82 PathProgramCache]: Analyzing trace with hash -895523692, now seen corresponding path program 1 times [2020-10-28 12:08:55,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:08:55,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571316407] [2020-10-28 12:08:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:08:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:08:56,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:56,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:08:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 494 [2020-10-28 12:09:01,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:09:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 12:09:01,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-28 12:09:01,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:09:01,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:01,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:09:01,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:09:01,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:09:01,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:01,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:09:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:09:01,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 12:09:01,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 12:09:01,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-28 12:09:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:01,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:01,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:09:01,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 12:09:01,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:01,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:09:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-28 12:09:02,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571316407] [2020-10-28 12:09:02,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:02,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:02,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978664558] [2020-10-28 12:09:02,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:02,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:02,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:02,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:02,049 INFO L87 Difference]: Start difference. First operand 14359 states and 16406 transitions. Second operand 7 states. [2020-10-28 12:09:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:05,942 INFO L93 Difference]: Finished difference Result 28954 states and 33053 transitions. [2020-10-28 12:09:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:09:05,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 478 [2020-10-28 12:09:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:05,968 INFO L225 Difference]: With dead ends: 28954 [2020-10-28 12:09:05,968 INFO L226 Difference]: Without dead ends: 14392 [2020-10-28 12:09:05,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14392 states. [2020-10-28 12:09:06,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14392 to 13967. [2020-10-28 12:09:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13967 states. [2020-10-28 12:09:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13967 states to 13967 states and 15793 transitions. [2020-10-28 12:09:06,194 INFO L78 Accepts]: Start accepts. Automaton has 13967 states and 15793 transitions. Word has length 478 [2020-10-28 12:09:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:06,194 INFO L481 AbstractCegarLoop]: Abstraction has 13967 states and 15793 transitions. [2020-10-28 12:09:06,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 13967 states and 15793 transitions. [2020-10-28 12:09:06,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-28 12:09:06,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:06,204 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-10-28 12:09:06,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:09:06,204 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1608801788, now seen corresponding path program 1 times [2020-10-28 12:09:06,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:06,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462471615] [2020-10-28 12:09:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:06,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-10-28 12:09:09,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:09:09,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3170 [2020-10-28 12:09:09,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-28 12:09:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:09:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:09,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:09,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:09,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:09:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:09,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:09:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:09:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:09,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:09:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:09:09,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:09:09,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:09,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:09:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:09,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:09,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:09:09,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 12:09:09,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:09,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-28 12:09:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:09:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:09,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:09:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:09,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:10,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:10,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:09:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:09:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:10,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:09:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-10-28 12:09:10,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462471615] [2020-10-28 12:09:10,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:10,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:09:10,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504980027] [2020-10-28 12:09:10,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:09:10,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:10,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:09:10,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:09:10,231 INFO L87 Difference]: Start difference. First operand 13967 states and 15793 transitions. Second operand 5 states. [2020-10-28 12:09:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:13,170 INFO L93 Difference]: Finished difference Result 27347 states and 30854 transitions. [2020-10-28 12:09:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:09:13,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 509 [2020-10-28 12:09:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:13,197 INFO L225 Difference]: With dead ends: 27347 [2020-10-28 12:09:13,197 INFO L226 Difference]: Without dead ends: 13004 [2020-10-28 12:09:13,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:09:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13004 states. [2020-10-28 12:09:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13004 to 12962. [2020-10-28 12:09:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12962 states. [2020-10-28 12:09:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 14275 transitions. [2020-10-28 12:09:13,408 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 14275 transitions. Word has length 509 [2020-10-28 12:09:13,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:13,408 INFO L481 AbstractCegarLoop]: Abstraction has 12962 states and 14275 transitions. [2020-10-28 12:09:13,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:09:13,408 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 14275 transitions. [2020-10-28 12:09:13,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2020-10-28 12:09:13,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:13,421 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:13,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:09:13,421 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash 98441740, now seen corresponding path program 1 times [2020-10-28 12:09:13,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:13,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106468980] [2020-10-28 12:09:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:13,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:16,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:18,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:18,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-28 12:09:18,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:09:18,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-28 12:09:18,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:18,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:18,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:18,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-28 12:09:18,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:09:18,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:18,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:18,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:18,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:18,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:09:18,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:18,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:18,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:18,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:18,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:18,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:09:18,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:09:18,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:18,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:09:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:19,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:09:19,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:09:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:19,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:09:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:19,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:09:19,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:09:19,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:19,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:09:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:19,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-28 12:09:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:19,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:19,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:09:19,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 12:09:19,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:19,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 12:09:19,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 528 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:09:19,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106468980] [2020-10-28 12:09:19,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:09:19,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:09:19,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250411916] [2020-10-28 12:09:19,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:19,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:19,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:19,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:19,848 INFO L87 Difference]: Start difference. First operand 12962 states and 14275 transitions. Second operand 7 states. [2020-10-28 12:09:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:23,060 INFO L93 Difference]: Finished difference Result 25781 states and 28392 transitions. [2020-10-28 12:09:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:09:23,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 532 [2020-10-28 12:09:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:23,081 INFO L225 Difference]: With dead ends: 25781 [2020-10-28 12:09:23,081 INFO L226 Difference]: Without dead ends: 13013 [2020-10-28 12:09:23,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13013 states. [2020-10-28 12:09:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13013 to 12974. [2020-10-28 12:09:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12974 states. [2020-10-28 12:09:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12974 states to 12974 states and 14257 transitions. [2020-10-28 12:09:23,304 INFO L78 Accepts]: Start accepts. Automaton has 12974 states and 14257 transitions. Word has length 532 [2020-10-28 12:09:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:23,305 INFO L481 AbstractCegarLoop]: Abstraction has 12974 states and 14257 transitions. [2020-10-28 12:09:23,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 12974 states and 14257 transitions. [2020-10-28 12:09:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-28 12:09:23,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:23,321 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:23,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 12:09:23,321 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:23,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1066523936, now seen corresponding path program 1 times [2020-10-28 12:09:23,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:23,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34877595] [2020-10-28 12:09:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:23,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:24,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking...