/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:36:09,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:36:09,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:36:09,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:36:09,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:36:09,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:36:09,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:36:09,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:36:09,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:36:09,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:36:09,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:36:09,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:36:09,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:36:09,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:36:09,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:36:09,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:36:09,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:36:09,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:36:09,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:36:09,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:36:09,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:36:09,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:36:09,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:36:09,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:36:09,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:36:09,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:36:09,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:36:09,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:36:09,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:36:09,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:36:09,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:36:09,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:36:09,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:36:09,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:36:09,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:36:09,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:36:09,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:36:09,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:36:09,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:36:09,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:36:09,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:36:09,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:36:09,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:36:09,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:36:09,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:36:09,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:36:09,190 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:36:09,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:36:09,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:36:09,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:36:09,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:36:09,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:36:09,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:36:09,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:36:09,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:36:09,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:36:09,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:36:09,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:36:09,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:36:09,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:36:09,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:36:09,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:36:09,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:36:09,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:36:09,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:36:09,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:36:09,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:36:09,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:36:09,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:36:09,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:36:09,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:36:09,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:36:09,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:36:09,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:36:09,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:36:09,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:36:09,736 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:36:09,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46.c [2020-10-29 07:36:09,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fee014e16/c36dd6eda6074d27a3618209db8eeb5f/FLAGdc2d5c8bc [2020-10-29 07:36:10,576 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:36:10,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label46.c [2020-10-29 07:36:10,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fee014e16/c36dd6eda6074d27a3618209db8eeb5f/FLAGdc2d5c8bc [2020-10-29 07:36:10,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fee014e16/c36dd6eda6074d27a3618209db8eeb5f [2020-10-29 07:36:10,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:36:10,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:36:10,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:36:10,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:36:10,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:36:10,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:36:10" (1/1) ... [2020-10-29 07:36:10,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126272a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:10, skipping insertion in model container [2020-10-29 07:36:10,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:36:10" (1/1) ... [2020-10-29 07:36:10,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:36:10,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:36:11,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:36:11,484 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:36:11,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:36:11,757 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:36:11,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11 WrapperNode [2020-10-29 07:36:11,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:36:11,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:36:11,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:36:11,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:36:11,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11" (1/1) ... [2020-10-29 07:36:11,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11" (1/1) ... [2020-10-29 07:36:11,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11" (1/1) ... [2020-10-29 07:36:11,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11" (1/1) ... [2020-10-29 07:36:11,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11" (1/1) ... [2020-10-29 07:36:11,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11" (1/1) ... [2020-10-29 07:36:11,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11" (1/1) ... [2020-10-29 07:36:11,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:36:11,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:36:11,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:36:11,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:36:11,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:36:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:36:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:36:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:36:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:36:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:36:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:36:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:36:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:36:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:36:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:36:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:36:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:36:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:36:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:36:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:36:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:36:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:36:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:36:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:36:13,489 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:36:13,490 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:36:13,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:36:13 BoogieIcfgContainer [2020-10-29 07:36:13,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:36:13,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:36:13,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:36:13,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:36:13,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:36:10" (1/3) ... [2020-10-29 07:36:13,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6595bb56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:36:13, skipping insertion in model container [2020-10-29 07:36:13,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:36:11" (2/3) ... [2020-10-29 07:36:13,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6595bb56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:36:13, skipping insertion in model container [2020-10-29 07:36:13,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:36:13" (3/3) ... [2020-10-29 07:36:13,505 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label46.c [2020-10-29 07:36:13,519 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:36:13,525 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:36:13,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:36:13,573 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:36:13,573 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:36:13,574 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:36:13,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:36:13,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:36:13,574 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:36:13,574 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:36:13,574 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:36:13,599 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-29 07:36:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 07:36:13,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:13,608 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] [2020-10-29 07:36:13,608 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:13,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:13,615 INFO L82 PathProgramCache]: Analyzing trace with hash 897627376, now seen corresponding path program 1 times [2020-10-29 07:36:13,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:13,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274908253] [2020-10-29 07:36:13,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:13,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:14,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:14,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 07:36:14,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:14,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-29 07:36:14,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:14,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:36:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:36:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 07:36:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:36:14,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:14,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:14,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:14,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:14,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:14,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:36:14,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:14,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:14,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:36:14,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:36:14,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274908253] [2020-10-29 07:36:14,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:36:14,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:36:14,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117561579] [2020-10-29 07:36:14,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:36:14,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:14,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:36:14,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:36:14,583 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-29 07:36:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:16,751 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-29 07:36:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:36:16,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-29 07:36:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:16,770 INFO L225 Difference]: With dead ends: 703 [2020-10-29 07:36:16,771 INFO L226 Difference]: Without dead ends: 381 [2020-10-29 07:36:16,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:36:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-29 07:36:16,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-29 07:36:16,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-29 07:36:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-29 07:36:16,865 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 46 [2020-10-29 07:36:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:16,866 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-29 07:36:16,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:36:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-29 07:36:16,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 07:36:16,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:16,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:16,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:36:16,873 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash 180404348, now seen corresponding path program 1 times [2020-10-29 07:36:16,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:16,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438231043] [2020-10-29 07:36:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:16,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:17,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:18,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:18,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 07:36:18,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:36:18,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-29 07:36:18,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:18,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:18,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:36:18,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:36:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:36:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:18,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:18,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:18,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:18,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:36:18,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:18,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:36:18,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:18,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:18,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:36:18,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:18,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 07:36:18,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:18,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:36:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:36:18,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438231043] [2020-10-29 07:36:18,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:36:18,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:36:18,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522211094] [2020-10-29 07:36:18,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:18,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:18,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:18,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:18,944 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 7 states. [2020-10-29 07:36:21,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:21,767 INFO L93 Difference]: Finished difference Result 1144 states and 1712 transitions. [2020-10-29 07:36:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:36:21,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-29 07:36:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:21,776 INFO L225 Difference]: With dead ends: 1144 [2020-10-29 07:36:21,776 INFO L226 Difference]: Without dead ends: 773 [2020-10-29 07:36:21,778 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 [2020-10-29 07:36:21,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-29 07:36:21,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 753. [2020-10-29 07:36:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-29 07:36:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 994 transitions. [2020-10-29 07:36:21,873 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 994 transitions. Word has length 115 [2020-10-29 07:36:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:21,879 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 994 transitions. [2020-10-29 07:36:21,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:36:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 994 transitions. [2020-10-29 07:36:21,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 07:36:21,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:21,895 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:36:21,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:36:21,896 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:21,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:21,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2096398500, now seen corresponding path program 1 times [2020-10-29 07:36:21,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:21,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686666952] [2020-10-29 07:36:21,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:21,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:22,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:26,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:26,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:26,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 07:36:26,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:36:26,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:36:26,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:26,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 07:36:26,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:36:26,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:36:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:27,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:27,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:27,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:36:27,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:27,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:27,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:27,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:36:27,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:36:27,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:27,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:36:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:27,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 07:36:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:27,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:27,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:27,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:36:27,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:36:27,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:27,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:36:27,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:36:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:36:27,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686666952] [2020-10-29 07:36:27,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:27,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:36:27,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644130309] [2020-10-29 07:36:27,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:27,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:27,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:27,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:27,715 INFO L87 Difference]: Start difference. First operand 753 states and 994 transitions. Second operand 7 states. [2020-10-29 07:36:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:30,406 INFO L93 Difference]: Finished difference Result 2078 states and 2812 transitions. [2020-10-29 07:36:30,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:36:30,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-29 07:36:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:30,416 INFO L225 Difference]: With dead ends: 2078 [2020-10-29 07:36:30,416 INFO L226 Difference]: Without dead ends: 1331 [2020-10-29 07:36:30,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:36:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2020-10-29 07:36:30,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1319. [2020-10-29 07:36:30,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-29 07:36:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1655 transitions. [2020-10-29 07:36:30,485 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1655 transitions. Word has length 202 [2020-10-29 07:36:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:30,486 INFO L481 AbstractCegarLoop]: Abstraction has 1319 states and 1655 transitions. [2020-10-29 07:36:30,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:36:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1655 transitions. [2020-10-29 07:36:30,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 07:36:30,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:30,493 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:36:30,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:36:30,494 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:30,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:30,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1291085520, now seen corresponding path program 1 times [2020-10-29 07:36:30,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:30,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489054842] [2020-10-29 07:36:30,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:35,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 07:36:35,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:36:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 07:36:35,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:35,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 07:36:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 07:36:35,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:35,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:35,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:35,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:36:35,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:35,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:35,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:35,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:36:35,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:36:35,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:35,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:36:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:35,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 07:36:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:35,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:36,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:36,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:36:36,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:36,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 07:36:36,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:36,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 07:36:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:36:36,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489054842] [2020-10-29 07:36:36,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:36,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:36:36,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147996891] [2020-10-29 07:36:36,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:36,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:36,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:36,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:36,279 INFO L87 Difference]: Start difference. First operand 1319 states and 1655 transitions. Second operand 7 states. [2020-10-29 07:36:39,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:39,251 INFO L93 Difference]: Finished difference Result 3224 states and 4126 transitions. [2020-10-29 07:36:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:36:39,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-29 07:36:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:39,262 INFO L225 Difference]: With dead ends: 3224 [2020-10-29 07:36:39,262 INFO L226 Difference]: Without dead ends: 1519 [2020-10-29 07:36:39,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:36:39,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-10-29 07:36:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1311. [2020-10-29 07:36:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-29 07:36:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1420 transitions. [2020-10-29 07:36:39,317 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1420 transitions. Word has length 259 [2020-10-29 07:36:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:39,317 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1420 transitions. [2020-10-29 07:36:39,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:36:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1420 transitions. [2020-10-29 07:36:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-29 07:36:39,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:39,324 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:39,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:36:39,324 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:39,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:39,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1054328348, now seen corresponding path program 1 times [2020-10-29 07:36:39,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:39,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878064919] [2020-10-29 07:36:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:39,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:39,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:39,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:39,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:44,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:44,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 07:36:44,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:36:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 07:36:44,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:44,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 07:36:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:36:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:44,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:44,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:44,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:44,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:44,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:44,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:36:44,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:44,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:44,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:36:44,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:44,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:44,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:44,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:44,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 07:36:44,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:44,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:36:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:44,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 07:36:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:45,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:45,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:45,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:45,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 07:36:45,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:45,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:45,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:36:45,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:36:45,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878064919] [2020-10-29 07:36:45,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:45,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:36:45,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640912257] [2020-10-29 07:36:45,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:45,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:45,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:45,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:45,316 INFO L87 Difference]: Start difference. First operand 1311 states and 1420 transitions. Second operand 7 states. [2020-10-29 07:36:47,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:47,478 INFO L93 Difference]: Finished difference Result 3203 states and 3549 transitions. [2020-10-29 07:36:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:36:47,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-29 07:36:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:47,494 INFO L225 Difference]: With dead ends: 3203 [2020-10-29 07:36:47,495 INFO L226 Difference]: Without dead ends: 2080 [2020-10-29 07:36:47,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:36:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2020-10-29 07:36:47,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2059. [2020-10-29 07:36:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2020-10-29 07:36:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2230 transitions. [2020-10-29 07:36:47,605 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2230 transitions. Word has length 334 [2020-10-29 07:36:47,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:47,607 INFO L481 AbstractCegarLoop]: Abstraction has 2059 states and 2230 transitions. [2020-10-29 07:36:47,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:36:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2230 transitions. [2020-10-29 07:36:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-29 07:36:47,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:47,615 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:36:47,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:36:47,615 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:47,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1654787092, now seen corresponding path program 1 times [2020-10-29 07:36:47,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:47,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705326443] [2020-10-29 07:36:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:47,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:48,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-29 07:36:52,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:36:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:36:52,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-29 07:36:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:36:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:52,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:52,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:52,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:52,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:52,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:36:52,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:52,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:52,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:52,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:53,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:53,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:36:53,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:36:53,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:53,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:53,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:53,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:53,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:36:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 07:36:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:53,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:53,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:53,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-29 07:36:53,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:53,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:36:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:36:53,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705326443] [2020-10-29 07:36:53,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:53,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:36:53,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990316555] [2020-10-29 07:36:53,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:53,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:53,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:53,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:53,889 INFO L87 Difference]: Start difference. First operand 2059 states and 2230 transitions. Second operand 7 states. [2020-10-29 07:36:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:56,385 INFO L93 Difference]: Finished difference Result 5494 states and 6221 transitions. [2020-10-29 07:36:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:36:56,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-29 07:36:56,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:56,409 INFO L225 Difference]: With dead ends: 5494 [2020-10-29 07:36:56,409 INFO L226 Difference]: Without dead ends: 3441 [2020-10-29 07:36:56,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:36:56,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2020-10-29 07:36:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 2993. [2020-10-29 07:36:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2993 states. [2020-10-29 07:36:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 3263 transitions. [2020-10-29 07:36:56,539 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 3263 transitions. Word has length 358 [2020-10-29 07:36:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:56,540 INFO L481 AbstractCegarLoop]: Abstraction has 2993 states and 3263 transitions. [2020-10-29 07:36:56,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:36:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 3263 transitions. [2020-10-29 07:36:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-29 07:36:56,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:56,552 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:56,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:36:56,553 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:56,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:56,553 INFO L82 PathProgramCache]: Analyzing trace with hash -124370940, now seen corresponding path program 1 times [2020-10-29 07:36:56,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:56,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620921496] [2020-10-29 07:36:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:56,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:01,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:01,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-29 07:37:01,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:37:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 07:37:01,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:01,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-29 07:37:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-29 07:37:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:01,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:01,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:01,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:01,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:37:01,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:01,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:01,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:01,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:01,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:01,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 07:37:01,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:01,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:37:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 07:37:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:37:02,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 07:37:02,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-29 07:37:02,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-29 07:37:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:02,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:02,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:02,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:37:02,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:02,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:02,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:02,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:37:02,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:02,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 224 proven. 158 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-29 07:37:02,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620921496] [2020-10-29 07:37:02,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:02,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:37:02,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116141992] [2020-10-29 07:37:02,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:37:02,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:02,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:37:02,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:37:02,661 INFO L87 Difference]: Start difference. First operand 2993 states and 3263 transitions. Second operand 7 states. [2020-10-29 07:37:04,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:04,619 INFO L93 Difference]: Finished difference Result 6182 states and 6836 transitions. [2020-10-29 07:37:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:37:04,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-29 07:37:04,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:04,642 INFO L225 Difference]: With dead ends: 6182 [2020-10-29 07:37:04,642 INFO L226 Difference]: Without dead ends: 3377 [2020-10-29 07:37:04,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:37:04,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2020-10-29 07:37:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3369. [2020-10-29 07:37:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3369 states. [2020-10-29 07:37:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 3674 transitions. [2020-10-29 07:37:04,738 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 3674 transitions. Word has length 493 [2020-10-29 07:37:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:04,738 INFO L481 AbstractCegarLoop]: Abstraction has 3369 states and 3674 transitions. [2020-10-29 07:37:04,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:37:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 3674 transitions. [2020-10-29 07:37:04,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2020-10-29 07:37:04,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:04,759 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:04,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:37:04,759 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:04,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:04,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1963073280, now seen corresponding path program 1 times [2020-10-29 07:37:04,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:04,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598839209] [2020-10-29 07:37:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:06,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:09,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:09,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-29 07:37:09,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:37:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 07:37:09,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:09,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-29 07:37:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:37:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:09,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:10,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:10,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:10,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:37:10,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:10,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:10,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:10,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:10,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:10,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:10,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:37:10,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:10,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:10,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:10,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:37:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:37:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:10,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:37:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-29 07:37:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:10,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:10,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:10,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 07:37:10,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:10,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:37:10,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-29 07:37:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:10,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:10,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:10,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 07:37:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:10,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:37:10,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 402 proven. 176 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2020-10-29 07:37:11,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598839209] [2020-10-29 07:37:11,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:11,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:37:11,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587996786] [2020-10-29 07:37:11,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:37:11,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:37:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:37:11,108 INFO L87 Difference]: Start difference. First operand 3369 states and 3674 transitions. Second operand 7 states. [2020-10-29 07:37:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:13,637 INFO L93 Difference]: Finished difference Result 6924 states and 7585 transitions. [2020-10-29 07:37:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:37:13,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 645 [2020-10-29 07:37:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:13,657 INFO L225 Difference]: With dead ends: 6924 [2020-10-29 07:37:13,658 INFO L226 Difference]: Without dead ends: 3739 [2020-10-29 07:37:13,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:37:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2020-10-29 07:37:13,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 3371. [2020-10-29 07:37:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3371 states. [2020-10-29 07:37:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3371 states to 3371 states and 3655 transitions. [2020-10-29 07:37:13,765 INFO L78 Accepts]: Start accepts. Automaton has 3371 states and 3655 transitions. Word has length 645 [2020-10-29 07:37:13,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:13,766 INFO L481 AbstractCegarLoop]: Abstraction has 3371 states and 3655 transitions. [2020-10-29 07:37:13,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:37:13,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3371 states and 3655 transitions. [2020-10-29 07:37:13,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2020-10-29 07:37:13,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:13,776 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:13,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:37:13,777 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:13,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:13,778 INFO L82 PathProgramCache]: Analyzing trace with hash 2044423088, now seen corresponding path program 1 times [2020-10-29 07:37:13,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:13,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495808580] [2020-10-29 07:37:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:13,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:18,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:18,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 740 [2020-10-29 07:37:18,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:37:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4464 [2020-10-29 07:37:18,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:18,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:37:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:37:18,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:18,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:18,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:18,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:37:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:18,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:18,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:18,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:37:18,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:18,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:18,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:18,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:18,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:18,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:37:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:18,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:18,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:18,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:18,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:18,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:37:18,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:18,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:18,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:18,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:18,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:18,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:37:18,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 07:37:18,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:18,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:37:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:18,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:37:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:19,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:19,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:19,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 07:37:19,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:19,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:37:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1349 backedges. 688 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-29 07:37:19,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495808580] [2020-10-29 07:37:19,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:19,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:37:19,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238800325] [2020-10-29 07:37:19,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:37:19,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:19,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:37:19,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:37:19,542 INFO L87 Difference]: Start difference. First operand 3371 states and 3655 transitions. Second operand 7 states. [2020-10-29 07:37:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:21,750 INFO L93 Difference]: Finished difference Result 7480 states and 8253 transitions. [2020-10-29 07:37:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:37:21,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 720 [2020-10-29 07:37:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:21,775 INFO L225 Difference]: With dead ends: 7480 [2020-10-29 07:37:21,775 INFO L226 Difference]: Without dead ends: 4481 [2020-10-29 07:37:21,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:37:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2020-10-29 07:37:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 4293. [2020-10-29 07:37:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4293 states. [2020-10-29 07:37:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4293 states to 4293 states and 4739 transitions. [2020-10-29 07:37:21,899 INFO L78 Accepts]: Start accepts. Automaton has 4293 states and 4739 transitions. Word has length 720 [2020-10-29 07:37:21,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:21,900 INFO L481 AbstractCegarLoop]: Abstraction has 4293 states and 4739 transitions. [2020-10-29 07:37:21,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:37:21,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4293 states and 4739 transitions. [2020-10-29 07:37:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2020-10-29 07:37:21,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:21,911 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:21,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:37:21,912 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:21,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:21,913 INFO L82 PathProgramCache]: Analyzing trace with hash 325500148, now seen corresponding path program 1 times [2020-10-29 07:37:21,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:21,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844242216] [2020-10-29 07:37:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:22,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:22,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:24,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:24,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-29 07:37:24,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:37:24,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2436 [2020-10-29 07:37:24,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:24,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:37:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:37:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:24,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:24,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:24,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:24,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:37:24,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:24,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:24,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:24,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:24,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:24,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:24,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:24,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:24,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:24,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:37:24,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:24,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:24,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:24,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:24,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:24,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:24,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:37:24,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:24,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:24,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:24,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:24,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:24,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:37:24,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:24,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:24,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:24,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:24,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:37:24,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:37:24,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:24,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:24,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:37:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:37:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:25,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 07:37:25,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:25,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:37:25,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-29 07:37:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:25,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:37:25,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:37:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1767 backedges. 551 proven. 75 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2020-10-29 07:37:25,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844242216] [2020-10-29 07:37:25,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:25,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:37:25,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691264239] [2020-10-29 07:37:25,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:37:25,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:25,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:37:25,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:37:25,730 INFO L87 Difference]: Start difference. First operand 4293 states and 4739 transitions. Second operand 8 states. [2020-10-29 07:37:28,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:28,352 INFO L93 Difference]: Finished difference Result 9696 states and 10859 transitions. [2020-10-29 07:37:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:37:28,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 796 [2020-10-29 07:37:28,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:28,383 INFO L225 Difference]: With dead ends: 9696 [2020-10-29 07:37:28,383 INFO L226 Difference]: Without dead ends: 5775 [2020-10-29 07:37:28,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:37:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2020-10-29 07:37:28,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 5407. [2020-10-29 07:37:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5407 states. [2020-10-29 07:37:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 6042 transitions. [2020-10-29 07:37:28,552 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 6042 transitions. Word has length 796 [2020-10-29 07:37:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:28,553 INFO L481 AbstractCegarLoop]: Abstraction has 5407 states and 6042 transitions. [2020-10-29 07:37:28,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:37:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 6042 transitions. [2020-10-29 07:37:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-29 07:37:28,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:28,565 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:37:28,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:37:28,565 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:28,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1873115116, now seen corresponding path program 1 times [2020-10-29 07:37:28,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:28,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173534706] [2020-10-29 07:37:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:29,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:29,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:29,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:33,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:33,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-29 07:37:33,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:37:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 07:37:33,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:33,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-29 07:37:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:37:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:33,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:33,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:33,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:33,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:33,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:33,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:37:33,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:33,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:33,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:33,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:33,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:33,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:33,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:37:33,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:33,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:33,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:34,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:34,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:34,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:37:34,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:34,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:34,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:34,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:34,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:34,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:34,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 07:37:34,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:34,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:34,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:34,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:34,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 07:37:34,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-29 07:37:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:34,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:34,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 07:37:34,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:34,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:34,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:37:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:34,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-10-29 07:37:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:34,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:34,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:34,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:34,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:37:34,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:34,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:37:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:34,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-10-29 07:37:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:34,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:34,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:34,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:34,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:34,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:37:34,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:34,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:37:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 582 proven. 249 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2020-10-29 07:37:35,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173534706] [2020-10-29 07:37:35,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:35,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:37:35,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444183147] [2020-10-29 07:37:35,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:37:35,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:35,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:37:35,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:37:35,067 INFO L87 Difference]: Start difference. First operand 5407 states and 6042 transitions. Second operand 7 states. [2020-10-29 07:37:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:36,922 INFO L93 Difference]: Finished difference Result 11176 states and 12525 transitions. [2020-10-29 07:37:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:37:36,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 807 [2020-10-29 07:37:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:36,947 INFO L225 Difference]: With dead ends: 11176 [2020-10-29 07:37:36,947 INFO L226 Difference]: Without dead ends: 6141 [2020-10-29 07:37:36,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:37:36,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2020-10-29 07:37:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 5773. [2020-10-29 07:37:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5773 states. [2020-10-29 07:37:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 6445 transitions. [2020-10-29 07:37:37,099 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 6445 transitions. Word has length 807 [2020-10-29 07:37:37,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:37,100 INFO L481 AbstractCegarLoop]: Abstraction has 5773 states and 6445 transitions. [2020-10-29 07:37:37,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:37:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 6445 transitions. [2020-10-29 07:37:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-29 07:37:37,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:37,111 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-10-29 07:37:37,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:37:37,111 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash -264158568, now seen corresponding path program 1 times [2020-10-29 07:37:37,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:37,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259347948] [2020-10-29 07:37:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:42,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:42,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-29 07:37:42,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:37:42,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 07:37:42,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:42,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-29 07:37:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:37:42,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:42,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:42,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:42,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:37:42,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:42,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:42,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:42,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:42,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:42,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:42,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:37:42,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:42,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:42,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:42,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:42,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:42,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:42,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:42,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:42,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:42,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:37:42,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:42,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:42,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:42,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:42,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:42,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:42,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:37:42,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:42,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:37:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:42,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:42,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:42,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:42,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 07:37:42,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:42,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:37:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:43,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:37:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:43,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:43,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:43,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:37:43,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:43,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:37:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:43,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-29 07:37:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:43,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:43,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:43,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:43,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:37:43,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:43,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:43,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:43,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:37:43,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:43,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 589 proven. 249 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2020-10-29 07:37:43,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259347948] [2020-10-29 07:37:43,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:43,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:37:43,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763268827] [2020-10-29 07:37:43,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:37:43,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:43,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:37:43,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:37:43,888 INFO L87 Difference]: Start difference. First operand 5773 states and 6445 transitions. Second operand 8 states. [2020-10-29 07:37:46,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:46,300 INFO L93 Difference]: Finished difference Result 12088 states and 13556 transitions. [2020-10-29 07:37:46,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:37:46,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 814 [2020-10-29 07:37:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:46,327 INFO L225 Difference]: With dead ends: 12088 [2020-10-29 07:37:46,327 INFO L226 Difference]: Without dead ends: 6505 [2020-10-29 07:37:46,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:37:46,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2020-10-29 07:37:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 6319. [2020-10-29 07:37:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6319 states. [2020-10-29 07:37:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6319 states to 6319 states and 7034 transitions. [2020-10-29 07:37:46,467 INFO L78 Accepts]: Start accepts. Automaton has 6319 states and 7034 transitions. Word has length 814 [2020-10-29 07:37:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:46,468 INFO L481 AbstractCegarLoop]: Abstraction has 6319 states and 7034 transitions. [2020-10-29 07:37:46,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:37:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6319 states and 7034 transitions. [2020-10-29 07:37:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2020-10-29 07:37:46,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:46,480 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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] [2020-10-29 07:37:46,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:37:46,480 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:46,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1430463804, now seen corresponding path program 1 times [2020-10-29 07:37:46,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:46,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144825791] [2020-10-29 07:37:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:47,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:47,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 919 [2020-10-29 07:37:47,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-10-29 07:37:47,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:47,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-29 07:37:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 07:37:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:47,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:47,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:37:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:47,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:47,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:47,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:47,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:37:47,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:47,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:47,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:47,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:47,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:47,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:47,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:47,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:37:47,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:47,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:47,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:47,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:47,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:47,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:37:47,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:47,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:47,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:47,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:47,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:47,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:37:47,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:47,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:37:47,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:47,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:47,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:47,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:47,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:37:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:47,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:47,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:47,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:37:47,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:47,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:37:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:47,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:47,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:47,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:37:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:47,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:47,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:47,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:37:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:47,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:47,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:47,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:47,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:37:47,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:47,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 07:37:47,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 277 proven. 7 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2020-10-29 07:37:48,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144825791] [2020-10-29 07:37:48,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:48,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:37:48,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835991563] [2020-10-29 07:37:48,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:37:48,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:48,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:37:48,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:37:48,389 INFO L87 Difference]: Start difference. First operand 6319 states and 7034 transitions. Second operand 5 states. [2020-10-29 07:37:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:50,049 INFO L93 Difference]: Finished difference Result 13910 states and 15709 transitions. [2020-10-29 07:37:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:37:50,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 895 [2020-10-29 07:37:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:50,082 INFO L225 Difference]: With dead ends: 13910 [2020-10-29 07:37:50,082 INFO L226 Difference]: Without dead ends: 7781 [2020-10-29 07:37:50,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:37:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2020-10-29 07:37:50,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 7597. [2020-10-29 07:37:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7597 states. [2020-10-29 07:37:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7597 states to 7597 states and 8583 transitions. [2020-10-29 07:37:50,263 INFO L78 Accepts]: Start accepts. Automaton has 7597 states and 8583 transitions. Word has length 895 [2020-10-29 07:37:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:50,264 INFO L481 AbstractCegarLoop]: Abstraction has 7597 states and 8583 transitions. [2020-10-29 07:37:50,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:37:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7597 states and 8583 transitions. [2020-10-29 07:37:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-29 07:37:50,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:50,282 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2020-10-29 07:37:50,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:37:50,283 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:50,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:50,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1215351084, now seen corresponding path program 1 times [2020-10-29 07:37:50,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:50,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469070182] [2020-10-29 07:37:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:50,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:54,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:55,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:55,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-29 07:37:55,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:37:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 07:37:55,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:55,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:37:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:37:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-29 07:37:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:55,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:55,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:37:55,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:55,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:55,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:55,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:55,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:55,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:55,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:37:55,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:55,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:55,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:55,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:55,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:55,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:55,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:55,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:55,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:37:55,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:55,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:55,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:55,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:55,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:55,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:55,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:55,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:55,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:55,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:37:55,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:55,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:55,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:55,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:55,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:55,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:37:55,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:55,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:55,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:37:55,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:37:55,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:55,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:55,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:55,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:37:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:55,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:56,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:56,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:56,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:37:56,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:56,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:56,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:37:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:56,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:56,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:56,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:56,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:56,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 07:37:56,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:56,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:56,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:37:56,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:56,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:37:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:56,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:56,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:56,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:37:56,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 07:37:56,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:56,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:37:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:37:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:56,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:37:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:56,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:56,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:37:56,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:37:56,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:56,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:37:56,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2969 backedges. 1510 proven. 6 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2020-10-29 07:37:57,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469070182] [2020-10-29 07:37:57,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:57,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 07:37:57,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388130695] [2020-10-29 07:37:57,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:37:57,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:57,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:37:57,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:37:57,349 INFO L87 Difference]: Start difference. First operand 7597 states and 8583 transitions. Second operand 9 states. [2020-10-29 07:38:01,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:01,118 INFO L93 Difference]: Finished difference Result 16854 states and 19290 transitions. [2020-10-29 07:38:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 07:38:01,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 989 [2020-10-29 07:38:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:01,161 INFO L225 Difference]: With dead ends: 16854 [2020-10-29 07:38:01,161 INFO L226 Difference]: Without dead ends: 9447 [2020-10-29 07:38:01,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 07:38:01,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9447 states. [2020-10-29 07:38:01,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9447 to 9261. [2020-10-29 07:38:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9261 states. [2020-10-29 07:38:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9261 states to 9261 states and 10659 transitions. [2020-10-29 07:38:01,392 INFO L78 Accepts]: Start accepts. Automaton has 9261 states and 10659 transitions. Word has length 989 [2020-10-29 07:38:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:01,393 INFO L481 AbstractCegarLoop]: Abstraction has 9261 states and 10659 transitions. [2020-10-29 07:38:01,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:38:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand 9261 states and 10659 transitions. [2020-10-29 07:38:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2020-10-29 07:38:01,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:01,410 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 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, 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] [2020-10-29 07:38:01,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:38:01,411 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:01,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:01,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1207302200, now seen corresponding path program 1 times [2020-10-29 07:38:01,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:01,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977669388] [2020-10-29 07:38:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:02,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:04,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:05,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:06,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:06,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:06,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1086 [2020-10-29 07:38:06,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:38:06,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 07:38:06,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:06,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:06,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-29 07:38:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:38:06,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:06,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:06,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:06,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:06,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:06,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:06,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:06,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:38:06,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:06,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:06,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:06,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:06,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:06,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:06,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:06,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:38:06,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:06,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:06,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:06,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:06,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:06,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:06,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:06,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:38:06,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:06,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:06,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:06,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:06,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:06,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:38:06,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:06,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:38:06,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:06,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:06,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:06,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:06,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:06,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:06,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:38:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:38:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:38:07,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:38:07,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:38:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 07:38:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:38:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:38:07,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:38:07,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:07,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:07,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:38:07,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2020-10-29 07:38:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:38:07,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:38:07,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:38:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 951 proven. 79 refuted. 0 times theorem prover too weak. 2558 trivial. 0 not checked. [2020-10-29 07:38:08,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977669388] [2020-10-29 07:38:08,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:08,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:38:08,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658159013] [2020-10-29 07:38:08,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:38:08,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:08,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:38:08,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:38:08,141 INFO L87 Difference]: Start difference. First operand 9261 states and 10659 transitions. Second operand 7 states. [2020-10-29 07:38:10,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:10,147 INFO L93 Difference]: Finished difference Result 18336 states and 21129 transitions. [2020-10-29 07:38:10,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:38:10,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1058 [2020-10-29 07:38:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:10,179 INFO L225 Difference]: With dead ends: 18336 [2020-10-29 07:38:10,180 INFO L226 Difference]: Without dead ends: 9075 [2020-10-29 07:38:10,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:38:10,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9075 states. [2020-10-29 07:38:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9075 to 9073. [2020-10-29 07:38:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9073 states. [2020-10-29 07:38:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9073 states to 9073 states and 10219 transitions. [2020-10-29 07:38:10,367 INFO L78 Accepts]: Start accepts. Automaton has 9073 states and 10219 transitions. Word has length 1058 [2020-10-29 07:38:10,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:10,368 INFO L481 AbstractCegarLoop]: Abstraction has 9073 states and 10219 transitions. [2020-10-29 07:38:10,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:38:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 9073 states and 10219 transitions. [2020-10-29 07:38:10,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1177 [2020-10-29 07:38:10,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:10,387 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-29 07:38:10,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 07:38:10,387 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:10,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:10,388 INFO L82 PathProgramCache]: Analyzing trace with hash -546906272, now seen corresponding path program 1 times [2020-10-29 07:38:10,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:10,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557398392] [2020-10-29 07:38:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1206 [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-29 07:38:15,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:15,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:15,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:15,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:38:15,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:15,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:15,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:15,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:15,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:15,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:15,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:15,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:15,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:15,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:15,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:15,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:15,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:15,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:15,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:15,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:15,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:15,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:15,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:15,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:38:15,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:15,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:15,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:38:16,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:16,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:38:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:16,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:38:16,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:38:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:38:16,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:38:16,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:38:16,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:38:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:16,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 07:38:16,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:38:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:38:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:38:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:38:16,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:38:16,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:16,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:38:16,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:38:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:38:16,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:38:16,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:38:16,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1058 [2020-10-29 07:38:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:38:16,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:38:16,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:38:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 2288 proven. 399 refuted. 0 times theorem prover too weak. 1831 trivial. 0 not checked. [2020-10-29 07:38:18,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557398392] [2020-10-29 07:38:18,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:18,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 07:38:18,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307447907] [2020-10-29 07:38:18,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 07:38:18,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:18,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 07:38:18,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:38:18,309 INFO L87 Difference]: Start difference. First operand 9073 states and 10219 transitions. Second operand 12 states. [2020-10-29 07:38:21,472 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-29 07:38:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:22,276 INFO L93 Difference]: Finished difference Result 18146 states and 20452 transitions. [2020-10-29 07:38:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 07:38:22,279 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1176 [2020-10-29 07:38:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:22,305 INFO L225 Difference]: With dead ends: 18146 [2020-10-29 07:38:22,305 INFO L226 Difference]: Without dead ends: 9263 [2020-10-29 07:38:22,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-29 07:38:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9263 states. [2020-10-29 07:38:22,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9263 to 9075. [2020-10-29 07:38:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9075 states. [2020-10-29 07:38:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 10220 transitions. [2020-10-29 07:38:22,496 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 10220 transitions. Word has length 1176 [2020-10-29 07:38:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:22,498 INFO L481 AbstractCegarLoop]: Abstraction has 9075 states and 10220 transitions. [2020-10-29 07:38:22,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 07:38:22,498 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 10220 transitions. [2020-10-29 07:38:22,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1416 [2020-10-29 07:38:22,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:22,524 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:38:22,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 07:38:22,524 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:22,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1201424516, now seen corresponding path program 1 times [2020-10-29 07:38:22,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:22,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035310262] [2020-10-29 07:38:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:23,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1447 [2020-10-29 07:38:25,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:38:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2451 [2020-10-29 07:38:25,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1399 [2020-10-29 07:38:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 07:38:25,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:25,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:38:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:25,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:38:25,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:25,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:38:25,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:25,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:38:25,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:38:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:25,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:38:25,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:38:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:38:25,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:38:25,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:38:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:25,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:38:25,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:38:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:38:25,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:38:25,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:38:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:38:25,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:25,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:38:25,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:25,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:25,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:26,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:38:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:26,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:38:26,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:38:26,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:26,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:26,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:38:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:26,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:26,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:26,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:38:26,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:26,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:38:26,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:26,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:38:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5979 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 5531 trivial. 0 not checked. [2020-10-29 07:38:27,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035310262] [2020-10-29 07:38:27,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:27,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:38:27,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420445731] [2020-10-29 07:38:27,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:38:27,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:27,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:38:27,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:38:27,395 INFO L87 Difference]: Start difference. First operand 9075 states and 10220 transitions. Second operand 5 states. [2020-10-29 07:38:29,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:29,228 INFO L93 Difference]: Finished difference Result 18508 states and 20948 transitions. [2020-10-29 07:38:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:38:29,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1415 [2020-10-29 07:38:29,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:29,249 INFO L225 Difference]: With dead ends: 18508 [2020-10-29 07:38:29,249 INFO L226 Difference]: Without dead ends: 8881 [2020-10-29 07:38:29,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:38:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8881 states. [2020-10-29 07:38:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8881 to 7967. [2020-10-29 07:38:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7967 states. [2020-10-29 07:38:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7967 states to 7967 states and 8836 transitions. [2020-10-29 07:38:29,413 INFO L78 Accepts]: Start accepts. Automaton has 7967 states and 8836 transitions. Word has length 1415 [2020-10-29 07:38:29,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:29,415 INFO L481 AbstractCegarLoop]: Abstraction has 7967 states and 8836 transitions. [2020-10-29 07:38:29,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:38:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 7967 states and 8836 transitions. [2020-10-29 07:38:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1447 [2020-10-29 07:38:29,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:29,444 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:38:29,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 07:38:29,445 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:29,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:29,446 INFO L82 PathProgramCache]: Analyzing trace with hash -2046618672, now seen corresponding path program 1 times [2020-10-29 07:38:29,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:29,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295263859] [2020-10-29 07:38:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:31,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:31,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1478 [2020-10-29 07:38:31,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:38:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-29 07:38:31,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:31,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-29 07:38:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 07:38:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:31,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:31,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:31,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:31,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:38:31,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:31,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:31,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:31,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:31,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:38:31,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:31,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:31,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:31,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:31,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:31,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:31,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:31,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:31,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:31,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:31,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:31,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:38:31,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:31,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:31,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:31,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:31,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:38:31,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:38:31,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:31,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:31,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:38:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:31,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:31,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:31,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:31,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:38:31,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:31,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:31,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:31,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:31,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:31,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:31,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:38:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:31,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:31,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:38:31,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:38:31,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:31,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:31,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:38:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:31,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:31,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:31,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:31,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 07:38:31,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:31,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:31,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:38:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:32,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:32,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:38:32,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:32,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:38:32,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:32,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:32,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:32,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:38:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:32,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:32,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:38:32,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:32,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:38:32,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:32,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:32,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:32,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:38:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:32,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:38:32,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:32,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:38:32,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:32,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:32,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:38:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:32,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:32,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:38:32,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:38:32,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:32,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:38:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 437 proven. 11 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2020-10-29 07:38:33,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295263859] [2020-10-29 07:38:33,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:33,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:38:33,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624157496] [2020-10-29 07:38:33,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:38:33,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:33,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:38:33,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:38:33,230 INFO L87 Difference]: Start difference. First operand 7967 states and 8836 transitions. Second operand 6 states. [2020-10-29 07:38:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:35,562 INFO L93 Difference]: Finished difference Result 15928 states and 17667 transitions. [2020-10-29 07:38:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:38:35,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1446 [2020-10-29 07:38:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:35,582 INFO L225 Difference]: With dead ends: 15928 [2020-10-29 07:38:35,582 INFO L226 Difference]: Without dead ends: 8151 [2020-10-29 07:38:35,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:38:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8151 states. [2020-10-29 07:38:35,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8151 to 7967. [2020-10-29 07:38:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7967 states. [2020-10-29 07:38:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7967 states to 7967 states and 8711 transitions. [2020-10-29 07:38:35,742 INFO L78 Accepts]: Start accepts. Automaton has 7967 states and 8711 transitions. Word has length 1446 [2020-10-29 07:38:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:35,744 INFO L481 AbstractCegarLoop]: Abstraction has 7967 states and 8711 transitions. [2020-10-29 07:38:35,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:38:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7967 states and 8711 transitions. [2020-10-29 07:38:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1489 [2020-10-29 07:38:35,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:35,782 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:38:35,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 07:38:35,783 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:35,784 INFO L82 PathProgramCache]: Analyzing trace with hash -439753496, now seen corresponding path program 1 times [2020-10-29 07:38:35,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:35,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706553201] [2020-10-29 07:38:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1522 [2020-10-29 07:38:41,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:38:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 07:38:41,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:38:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-29 07:38:41,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-29 07:38:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:38:41,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:41,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:38:41,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:41,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:38:41,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:41,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:41,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:38:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:41,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:41,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:38:41,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:41,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:38:41,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:41,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:41,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:41,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:38:41,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:38:41,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:41,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:38:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:41,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:41,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:41,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:41,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:38:41,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:41,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:41,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:41,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:38:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:42,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:38:42,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:42,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:38:42,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:42,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:42,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:38:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:42,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:42,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:38:42,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:42,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:42,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:42,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:42,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:38:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:42,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:42,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:38:42,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:38:42,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:42,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:42,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:38:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:42,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:42,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:38:42,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:38:42,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:42,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:42,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:38:42,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:42,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:38:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:38:42,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1233 [2020-10-29 07:38:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:38:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:38:42,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:42,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:38:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:42,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1345 [2020-10-29 07:38:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:42,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:42,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:42,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:38:42,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:38:42,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:42,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:38:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7229 backedges. 1604 proven. 108 refuted. 0 times theorem prover too weak. 5517 trivial. 0 not checked. [2020-10-29 07:38:44,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706553201] [2020-10-29 07:38:44,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:44,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:38:44,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537061498] [2020-10-29 07:38:44,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:38:44,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:44,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:38:44,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:38:44,018 INFO L87 Difference]: Start difference. First operand 7967 states and 8711 transitions. Second operand 8 states. [2020-10-29 07:38:47,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:47,160 INFO L93 Difference]: Finished difference Result 15936 states and 17432 transitions. [2020-10-29 07:38:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:38:47,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1488 [2020-10-29 07:38:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:47,179 INFO L225 Difference]: With dead ends: 15936 [2020-10-29 07:38:47,179 INFO L226 Difference]: Without dead ends: 8159 [2020-10-29 07:38:47,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:38:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8159 states. [2020-10-29 07:38:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8159 to 7785. [2020-10-29 07:38:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7785 states. [2020-10-29 07:38:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7785 states to 7785 states and 8503 transitions. [2020-10-29 07:38:47,344 INFO L78 Accepts]: Start accepts. Automaton has 7785 states and 8503 transitions. Word has length 1488 [2020-10-29 07:38:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:47,346 INFO L481 AbstractCegarLoop]: Abstraction has 7785 states and 8503 transitions. [2020-10-29 07:38:47,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:38:47,346 INFO L276 IsEmpty]: Start isEmpty. Operand 7785 states and 8503 transitions. [2020-10-29 07:38:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2020-10-29 07:38:47,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:47,376 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:38:47,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 07:38:47,376 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1405458260, now seen corresponding path program 1 times [2020-10-29 07:38:47,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:47,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963917613] [2020-10-29 07:38:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:47,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1585 [2020-10-29 07:38:50,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:38:50,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2872 [2020-10-29 07:38:50,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-29 07:38:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:38:50,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:50,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:38:50,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:50,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:38:50,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:50,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:38:50,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:50,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:50,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:38:50,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:50,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:50,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:50,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:50,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:38:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:51,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:38:51,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:51,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:38:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:38:51,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:51,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:51,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:51,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:38:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:51,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:38:51,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:51,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:38:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:38:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:38:51,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:51,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:38:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:51,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:38:51,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:38:51,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:51,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:51,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:38:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:38:51,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:38:51,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:38:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:38:51,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:38:51,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:38:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:51,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-29 07:38:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:51,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:51,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:38:51,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:38:51,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:51,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:38:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7365 backedges. 1575 proven. 2 refuted. 0 times theorem prover too weak. 5788 trivial. 0 not checked. [2020-10-29 07:38:53,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963917613] [2020-10-29 07:38:53,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:53,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:38:53,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053219314] [2020-10-29 07:38:53,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:38:53,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:53,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:38:53,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:38:53,206 INFO L87 Difference]: Start difference. First operand 7785 states and 8503 transitions. Second operand 7 states. [2020-10-29 07:38:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:55,378 INFO L93 Difference]: Finished difference Result 14452 states and 15719 transitions. [2020-10-29 07:38:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:38:55,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1551 [2020-10-29 07:38:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:55,387 INFO L225 Difference]: With dead ends: 14452 [2020-10-29 07:38:55,387 INFO L226 Difference]: Without dead ends: 4829 [2020-10-29 07:38:55,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:38:55,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2020-10-29 07:38:55,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 4823. [2020-10-29 07:38:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4823 states. [2020-10-29 07:38:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 5014 transitions. [2020-10-29 07:38:55,473 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 5014 transitions. Word has length 1551 [2020-10-29 07:38:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:55,474 INFO L481 AbstractCegarLoop]: Abstraction has 4823 states and 5014 transitions. [2020-10-29 07:38:55,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:38:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 5014 transitions. [2020-10-29 07:38:55,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1633 [2020-10-29 07:38:55,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:55,508 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 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, 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] [2020-10-29 07:38:55,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 07:38:55,508 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:55,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:55,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1749460916, now seen corresponding path program 1 times [2020-10-29 07:38:55,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:55,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726414167] [2020-10-29 07:38:55,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:55,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:56,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:00,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:00,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1668 [2020-10-29 07:39:00,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:39:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-29 07:39:00,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:00,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:39:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-29 07:39:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 381 [2020-10-29 07:39:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:01,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:39:01,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:01,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:39:01,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:01,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:39:01,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:01,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:39:01,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:39:01,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:39:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:39:01,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:39:01,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:01,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:39:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:39:01,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:39:01,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:39:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:39:01,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:39:01,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:39:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:01,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 07:39:01,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:01,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:39:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:39:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:01,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:01,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:39:01,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 07:39:01,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:01,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:39:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:39:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:01,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:02,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:02,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:39:02,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 07:39:02,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:02,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 07:39:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:39:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:02,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:02,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:39:02,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:39:02,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:02,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:39:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:02,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1377 [2020-10-29 07:39:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:02,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:02,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:39:02,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:39:02,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:02,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:39:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:02,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1489 [2020-10-29 07:39:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:02,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:02,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:02,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:39:02,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:02,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:39:02,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:02,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:02,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:02,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:39:02,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:02,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8365 backedges. 3466 proven. 287 refuted. 0 times theorem prover too weak. 4612 trivial. 0 not checked. [2020-10-29 07:39:05,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726414167] [2020-10-29 07:39:05,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:05,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:39:05,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303364787] [2020-10-29 07:39:05,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:39:05,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:05,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:39:05,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:39:05,731 INFO L87 Difference]: Start difference. First operand 4823 states and 5014 transitions. Second operand 8 states. [2020-10-29 07:39:07,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:07,836 INFO L93 Difference]: Finished difference Result 7986 states and 8343 transitions. [2020-10-29 07:39:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:39:07,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1632 [2020-10-29 07:39:07,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:07,848 INFO L225 Difference]: With dead ends: 7986 [2020-10-29 07:39:07,848 INFO L226 Difference]: Without dead ends: 4821 [2020-10-29 07:39:07,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:39:07,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2020-10-29 07:39:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4447. [2020-10-29 07:39:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4447 states. [2020-10-29 07:39:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 4596 transitions. [2020-10-29 07:39:07,933 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 4596 transitions. Word has length 1632 [2020-10-29 07:39:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:07,935 INFO L481 AbstractCegarLoop]: Abstraction has 4447 states and 4596 transitions. [2020-10-29 07:39:07,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:39:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 4596 transitions. [2020-10-29 07:39:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-29 07:39:07,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:07,971 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-29 07:39:07,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 07:39:07,972 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:07,973 INFO L82 PathProgramCache]: Analyzing trace with hash 399944436, now seen corresponding path program 1 times [2020-10-29 07:39:07,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:07,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656068934] [2020-10-29 07:39:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:08,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:09,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:11,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:11,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1745 [2020-10-29 07:39:11,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:39:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3562 [2020-10-29 07:39:11,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:11,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1697 [2020-10-29 07:39:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 07:39:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:12,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:39:12,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:12,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 07:39:12,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:12,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:39:12,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:39:12,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:39:12,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:39:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:39:12,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:39:12,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:39:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:39:12,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:39:12,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:39:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:39:12,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:39:12,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:39:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:12,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:39:12,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:39:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:39:12,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:39:12,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:39:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:39:12,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:39:12,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:39:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:39:12,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:39:12,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:39:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:39:12,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:39:12,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-29 07:39:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 07:39:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:39:12,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:12,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-29 07:39:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:12,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:12,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 07:39:12,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:39:12,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:12,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:39:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8932 backedges. 517 proven. 13 refuted. 0 times theorem prover too weak. 8402 trivial. 0 not checked. [2020-10-29 07:39:14,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656068934] [2020-10-29 07:39:14,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:14,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:39:14,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27244225] [2020-10-29 07:39:14,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:39:14,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:14,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:39:14,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:39:14,328 INFO L87 Difference]: Start difference. First operand 4447 states and 4596 transitions. Second operand 5 states. [2020-10-29 07:39:16,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:16,007 INFO L93 Difference]: Finished difference Result 9624 states and 9987 transitions. [2020-10-29 07:39:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:39:16,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1709 [2020-10-29 07:39:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:16,020 INFO L225 Difference]: With dead ends: 9624 [2020-10-29 07:39:16,020 INFO L226 Difference]: Without dead ends: 4999 [2020-10-29 07:39:16,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:39:16,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2020-10-29 07:39:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4815. [2020-10-29 07:39:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4815 states. [2020-10-29 07:39:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 4973 transitions. [2020-10-29 07:39:16,099 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 4973 transitions. Word has length 1709 [2020-10-29 07:39:16,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:16,101 INFO L481 AbstractCegarLoop]: Abstraction has 4815 states and 4973 transitions. [2020-10-29 07:39:16,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:39:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 4973 transitions. [2020-10-29 07:39:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1770 [2020-10-29 07:39:16,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:16,133 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 9, 8, 8, 7, 6, 6, 6, 6, 5, 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, 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] [2020-10-29 07:39:16,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 07:39:16,133 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:16,134 INFO L82 PathProgramCache]: Analyzing trace with hash -740575008, now seen corresponding path program 1 times [2020-10-29 07:39:16,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:16,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973514741] [2020-10-29 07:39:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:16,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:18,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:19,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:21,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1807 [2020-10-29 07:39:21,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:39:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-29 07:39:21,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:21,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:39:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1432 [2020-10-29 07:39:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-29 07:39:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:21,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:21,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:21,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:21,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:21,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:39:21,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:21,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:21,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:21,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:21,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:39:21,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:39:21,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:21,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:21,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:39:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:21,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:21,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:21,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:39:21,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:39:21,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:21,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:21,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:39:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:39:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:39:22,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:39:22,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:22,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:39:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:39:22,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:39:22,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:39:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:39:22,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:39:22,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:39:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:39:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:39:22,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:39:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:39:22,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:39:22,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:22,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:22,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:39:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:39:22,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:39:22,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:22,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:39:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:39:22,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:39:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:39:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:39:22,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:39:22,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:39:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-29 07:39:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:22,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:22,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 07:39:22,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:22,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 07:39:22,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:22,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 07:39:22,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1514 [2020-10-29 07:39:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:23,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:23,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:39:23,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:39:23,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:23,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:39:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:23,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1626 [2020-10-29 07:39:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:23,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:23,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:39:23,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:23,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:39:23,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:23,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:23,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:39:23,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:39:23,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:39:23,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:39:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10019 backedges. 2837 proven. 207 refuted. 0 times theorem prover too weak. 6975 trivial. 0 not checked. [2020-10-29 07:39:25,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973514741] [2020-10-29 07:39:25,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:39:25,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:39:25,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580601043] [2020-10-29 07:39:25,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:39:25,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:25,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:39:25,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:39:25,386 INFO L87 Difference]: Start difference. First operand 4815 states and 4973 transitions. Second operand 7 states. [2020-10-29 07:39:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:28,227 INFO L93 Difference]: Finished difference Result 8150 states and 8444 transitions. [2020-10-29 07:39:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:39:28,228 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1769 [2020-10-29 07:39:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:28,236 INFO L225 Difference]: With dead ends: 8150 [2020-10-29 07:39:28,236 INFO L226 Difference]: Without dead ends: 5001 [2020-10-29 07:39:28,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:39:28,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5001 states. [2020-10-29 07:39:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5001 to 4813. [2020-10-29 07:39:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4813 states. [2020-10-29 07:39:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4813 states to 4813 states and 4966 transitions. [2020-10-29 07:39:28,317 INFO L78 Accepts]: Start accepts. Automaton has 4813 states and 4966 transitions. Word has length 1769 [2020-10-29 07:39:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:28,319 INFO L481 AbstractCegarLoop]: Abstraction has 4813 states and 4966 transitions. [2020-10-29 07:39:28,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:39:28,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4813 states and 4966 transitions. [2020-10-29 07:39:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1885 [2020-10-29 07:39:28,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:28,354 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2020-10-29 07:39:28,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 07:39:28,355 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:28,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:28,355 INFO L82 PathProgramCache]: Analyzing trace with hash 731479708, now seen corresponding path program 1 times [2020-10-29 07:39:28,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:28,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457175192] [2020-10-29 07:39:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking...