/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:07:08,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:07:08,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:07:08,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:07:08,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:07:08,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:07:08,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:07:08,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:07:08,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:07:08,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:07:08,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:07:08,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:07:08,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:07:08,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:07:08,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:07:08,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:07:08,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:07:08,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:07:08,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:07:08,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:07:08,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:07:08,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:07:08,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:07:08,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:07:08,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:07:08,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:07:08,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:07:08,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:07:08,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:07:08,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:07:08,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:07:08,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:07:08,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:07:08,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:07:08,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:07:08,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:07:08,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:07:08,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:07:08,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:07:08,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:07:08,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:07:08,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:07:08,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:07:08,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:07:08,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:07:08,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:07:08,229 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:07:08,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:07:08,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:07:08,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:07:08,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:07:08,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:07:08,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:07:08,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:07:08,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:07:08,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:07:08,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:07:08,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:07:08,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:07:08,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:07:08,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:07:08,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:07:08,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:07:08,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:07:08,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:07:08,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:07:08,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:07:08,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:07:08,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:07:08,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:07:08,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:07:08,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:07:08,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:07:08,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:07:08,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:07:08,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:07:08,764 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:07:08,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-28 13:07:08,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d03c56344/916ef7576ed145aea68737b6e850774e/FLAG11ed39d93 [2020-10-28 13:07:09,799 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:07:09,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-28 13:07:09,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d03c56344/916ef7576ed145aea68737b6e850774e/FLAG11ed39d93 [2020-10-28 13:07:09,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d03c56344/916ef7576ed145aea68737b6e850774e [2020-10-28 13:07:09,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:07:09,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:07:09,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:07:09,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:07:09,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:07:09,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:07:09" (1/1) ... [2020-10-28 13:07:09,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5540fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:09, skipping insertion in model container [2020-10-28 13:07:09,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:07:09" (1/1) ... [2020-10-28 13:07:09,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:07:10,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:07:11,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:07:11,248 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:07:11,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:07:11,614 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:07:11,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11 WrapperNode [2020-10-28 13:07:11,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:07:11,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:07:11,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:07:11,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:07:11,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11" (1/1) ... [2020-10-28 13:07:11,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11" (1/1) ... [2020-10-28 13:07:11,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11" (1/1) ... [2020-10-28 13:07:11,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11" (1/1) ... [2020-10-28 13:07:11,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11" (1/1) ... [2020-10-28 13:07:11,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11" (1/1) ... [2020-10-28 13:07:11,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11" (1/1) ... [2020-10-28 13:07:11,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:07:11,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:07:11,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:07:11,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:07:11,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11" (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 [2020-10-28 13:07:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:07:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:07:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:07:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:07:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:07:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:07:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:07:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:07:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:07:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:07:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:07:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:07:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:07:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:07:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:07:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:07:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:07:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:07:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:07:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:07:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:07:15,623 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:07:15,624 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:07:15,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:07:15 BoogieIcfgContainer [2020-10-28 13:07:15,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:07:15,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:07:15,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:07:15,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:07:15,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:07:09" (1/3) ... [2020-10-28 13:07:15,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd1cfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:07:15, skipping insertion in model container [2020-10-28 13:07:15,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:11" (2/3) ... [2020-10-28 13:07:15,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd1cfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:07:15, skipping insertion in model container [2020-10-28 13:07:15,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:07:15" (3/3) ... [2020-10-28 13:07:15,636 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label31.c [2020-10-28 13:07:15,649 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:07:15,654 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:07:15,668 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:07:15,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:07:15,701 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:07:15,702 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:07:15,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:07:15,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:07:15,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:07:15,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:07:15,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:07:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:07:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 13:07:15,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:15,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:15,747 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:15,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1588391441, now seen corresponding path program 1 times [2020-10-28 13:07:15,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:15,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023919634] [2020-10-28 13:07:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:16,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:16,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 13:07:16,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:16,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-28 13:07:16,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:16,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:07:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:07:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:07:16,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:17,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:17,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:17,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:07:17,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:17,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:17,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:17,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:17,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:07:17,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:07:17,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023919634] [2020-10-28 13:07:17,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:07:17,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:07:17,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859553768] [2020-10-28 13:07:17,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:07:17,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:17,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:07:17,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:07:17,147 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:07:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:24,464 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-28 13:07:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:07:24,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-28 13:07:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:24,491 INFO L225 Difference]: With dead ends: 1204 [2020-10-28 13:07:24,492 INFO L226 Difference]: Without dead ends: 698 [2020-10-28 13:07:24,505 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 [2020-10-28 13:07:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-28 13:07:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-28 13:07:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-28 13:07:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-28 13:07:24,645 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 72 [2020-10-28 13:07:24,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:24,648 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-28 13:07:24,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:07:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-28 13:07:24,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 13:07:24,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:24,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:07:24,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:07:24,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:24,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:24,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1110631610, now seen corresponding path program 1 times [2020-10-28 13:07:24,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:24,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372285198] [2020-10-28 13:07:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:29,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:29,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 13:07:29,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:07:29,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4623 [2020-10-28 13:07:29,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:29,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:07:29,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:07:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:07:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:29,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:29,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:29,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:07:29,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:29,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:29,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:29,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:07:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-28 13:07:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:29,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:29,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:07:29,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:29,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 13:07:29,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:29,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:07:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:07:29,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372285198] [2020-10-28 13:07:29,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:07:29,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:07:29,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767600067] [2020-10-28 13:07:29,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:29,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:29,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:29,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:29,972 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-28 13:07:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:40,969 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-28 13:07:40,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:07:40,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-28 13:07:40,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:40,985 INFO L225 Difference]: With dead ends: 1712 [2020-10-28 13:07:40,985 INFO L226 Difference]: Without dead ends: 1026 [2020-10-28 13:07:40,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:07:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-28 13:07:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-28 13:07:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-28 13:07:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-28 13:07:41,090 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 141 [2020-10-28 13:07:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:41,091 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-28 13:07:41,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-28 13:07:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 13:07:41,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:41,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:07:41,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:07:41,095 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:41,096 INFO L82 PathProgramCache]: Analyzing trace with hash 805212482, now seen corresponding path program 1 times [2020-10-28 13:07:41,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:41,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587123122] [2020-10-28 13:07:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:41,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:42,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:42,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:07:42,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:07:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1581 [2020-10-28 13:07:42,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:42,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:07:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:07:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:42,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:42,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:42,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:42,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:42,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:07:42,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:42,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:07:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:43,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:43,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:07:43,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 13:07:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:43,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:07:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:07:43,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587123122] [2020-10-28 13:07:43,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:07:43,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:07:43,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329480137] [2020-10-28 13:07:43,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:43,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:43,220 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-28 13:07:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:53,464 INFO L93 Difference]: Finished difference Result 2379 states and 3375 transitions. [2020-10-28 13:07:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:07:53,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-28 13:07:53,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:53,473 INFO L225 Difference]: With dead ends: 2379 [2020-10-28 13:07:53,473 INFO L226 Difference]: Without dead ends: 1677 [2020-10-28 13:07:53,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:07:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2020-10-28 13:07:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1333. [2020-10-28 13:07:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-10-28 13:07:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1724 transitions. [2020-10-28 13:07:53,532 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1724 transitions. Word has length 146 [2020-10-28 13:07:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:53,532 INFO L481 AbstractCegarLoop]: Abstraction has 1333 states and 1724 transitions. [2020-10-28 13:07:53,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:53,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1724 transitions. [2020-10-28 13:07:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-28 13:07:53,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:53,544 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:53,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:07:53,544 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:53,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:53,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1458117912, now seen corresponding path program 1 times [2020-10-28 13:07:53,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:53,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510462610] [2020-10-28 13:07:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:53,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:54,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:58,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:58,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-28 13:07:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:07:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 13:07:58,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:58,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:07:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-28 13:07:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:58,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:58,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:58,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:58,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:58,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:07:58,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:58,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:58,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:58,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:58,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:58,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:59,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:59,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:07:59,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 13:07:59,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:59,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:07:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:07:59,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:07:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:59,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:59,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:07:59,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:59,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-28 13:07:59,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:59,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:07:59,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 138 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:07:59,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510462610] [2020-10-28 13:07:59,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:59,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:07:59,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364721204] [2020-10-28 13:07:59,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:59,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:59,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:59,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:59,908 INFO L87 Difference]: Start difference. First operand 1333 states and 1724 transitions. Second operand 7 states. [2020-10-28 13:08:14,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:14,600 INFO L93 Difference]: Finished difference Result 3696 states and 4891 transitions. [2020-10-28 13:08:14,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:08:14,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-28 13:08:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:14,616 INFO L225 Difference]: With dead ends: 3696 [2020-10-28 13:08:14,617 INFO L226 Difference]: Without dead ends: 2369 [2020-10-28 13:08:14,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:14,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2020-10-28 13:08:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1997. [2020-10-28 13:08:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1997 states. [2020-10-28 13:08:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2478 transitions. [2020-10-28 13:08:14,704 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2478 transitions. Word has length 246 [2020-10-28 13:08:14,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:14,706 INFO L481 AbstractCegarLoop]: Abstraction has 1997 states and 2478 transitions. [2020-10-28 13:08:14,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:14,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2478 transitions. [2020-10-28 13:08:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-28 13:08:14,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:14,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:14,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:08:14,714 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:14,715 INFO L82 PathProgramCache]: Analyzing trace with hash -962300053, now seen corresponding path program 1 times [2020-10-28 13:08:14,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:14,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255028680] [2020-10-28 13:08:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:14,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:17,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:18,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:19,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:19,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:08:19,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 13:08:19,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 13:08:19,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:19,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:08:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:08:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:19,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:19,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:19,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:19,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:08:19,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:19,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:20,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:20,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:08:20,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:20,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:08:20,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:20,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:20,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:08:20,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:08:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:20,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:20,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:08:20,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 13:08:20,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:20,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:08:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:08:20,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255028680] [2020-10-28 13:08:20,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:20,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:20,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248479476] [2020-10-28 13:08:20,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:20,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:20,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:20,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:20,694 INFO L87 Difference]: Start difference. First operand 1997 states and 2478 transitions. Second operand 7 states. [2020-10-28 13:08:31,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:31,607 INFO L93 Difference]: Finished difference Result 5618 states and 7172 transitions. [2020-10-28 13:08:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:08:31,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-28 13:08:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:31,625 INFO L225 Difference]: With dead ends: 5618 [2020-10-28 13:08:31,626 INFO L226 Difference]: Without dead ends: 2968 [2020-10-28 13:08:31,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-10-28 13:08:31,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2613. [2020-10-28 13:08:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-28 13:08:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 2982 transitions. [2020-10-28 13:08:31,752 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 2982 transitions. Word has length 290 [2020-10-28 13:08:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:31,752 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 2982 transitions. [2020-10-28 13:08:31,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 2982 transitions. [2020-10-28 13:08:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-28 13:08:31,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:31,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:31,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:08:31,761 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:31,762 INFO L82 PathProgramCache]: Analyzing trace with hash -253741495, now seen corresponding path program 1 times [2020-10-28 13:08:31,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:31,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595175461] [2020-10-28 13:08:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:36,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:36,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 13:08:36,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:08:36,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-28 13:08:36,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:36,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:08:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:08:36,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:08:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:37,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:37,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:37,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:37,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:08:37,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:37,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:08:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-28 13:08:37,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:37,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:37,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:08:37,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:38,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:08:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:38,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:38,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:08:38,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:38,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:08:38,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:38,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:08:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 128 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:08:38,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595175461] [2020-10-28 13:08:38,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:38,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:38,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050775776] [2020-10-28 13:08:38,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:38,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:38,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:38,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:38,946 INFO L87 Difference]: Start difference. First operand 2613 states and 2982 transitions. Second operand 7 states. [2020-10-28 13:08:41,333 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 13:08:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:46,733 INFO L93 Difference]: Finished difference Result 5568 states and 6331 transitions. [2020-10-28 13:08:46,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:08:46,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-28 13:08:46,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:46,753 INFO L225 Difference]: With dead ends: 5568 [2020-10-28 13:08:46,753 INFO L226 Difference]: Without dead ends: 2961 [2020-10-28 13:08:46,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:08:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-10-28 13:08:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2924. [2020-10-28 13:08:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2924 states. [2020-10-28 13:08:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3299 transitions. [2020-10-28 13:08:46,847 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3299 transitions. Word has length 357 [2020-10-28 13:08:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:46,848 INFO L481 AbstractCegarLoop]: Abstraction has 2924 states and 3299 transitions. [2020-10-28 13:08:46,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3299 transitions. [2020-10-28 13:08:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-28 13:08:46,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:46,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:46,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:08:46,859 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:46,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:46,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1906091758, now seen corresponding path program 1 times [2020-10-28 13:08:46,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:46,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482780433] [2020-10-28 13:08:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:47,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:48,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:48,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-28 13:08:48,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:08:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1814 [2020-10-28 13:08:48,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:48,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:08:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:08:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:48,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:49,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:49,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:49,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:08:49,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:49,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:49,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:49,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:49,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:49,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:49,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:08:49,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-28 13:08:49,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:49,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:08:49,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:08:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:49,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:49,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:08:49,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:49,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:08:49,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:49,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:08:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:08:49,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482780433] [2020-10-28 13:08:49,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:49,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:49,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016555578] [2020-10-28 13:08:49,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:49,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:49,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:49,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:49,975 INFO L87 Difference]: Start difference. First operand 2924 states and 3299 transitions. Second operand 7 states. [2020-10-28 13:08:53,285 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:09:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:00,090 INFO L93 Difference]: Finished difference Result 6878 states and 8028 transitions. [2020-10-28 13:09:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:09:00,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-28 13:09:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:00,111 INFO L225 Difference]: With dead ends: 6878 [2020-10-28 13:09:00,111 INFO L226 Difference]: Without dead ends: 4267 [2020-10-28 13:09:00,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:09:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2020-10-28 13:09:00,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4224. [2020-10-28 13:09:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4224 states. [2020-10-28 13:09:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 4732 transitions. [2020-10-28 13:09:00,231 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 4732 transitions. Word has length 431 [2020-10-28 13:09:00,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:00,232 INFO L481 AbstractCegarLoop]: Abstraction has 4224 states and 4732 transitions. [2020-10-28 13:09:00,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:00,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 4732 transitions. [2020-10-28 13:09:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-28 13:09:00,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:00,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:00,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:09:00,246 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:00,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1651248496, now seen corresponding path program 1 times [2020-10-28 13:09:00,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:00,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564959273] [2020-10-28 13:09:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:00,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-28 13:09:03,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:09:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3055 [2020-10-28 13:09:03,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:03,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:09:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:09:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:03,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:03,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:03,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:03,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:09:03,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:03,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:03,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:03,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:03,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:03,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:03,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:03,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:03,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:09:03,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:03,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 13:09:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:03,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:09:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:04,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:09:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:04,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:04,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:04,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:09:04,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:04,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:09:04,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:04,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:04,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:04,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:04,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:09:04,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:09:04,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564959273] [2020-10-28 13:09:04,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:04,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:09:04,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109747221] [2020-10-28 13:09:04,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:09:04,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:04,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:09:04,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:09:04,728 INFO L87 Difference]: Start difference. First operand 4224 states and 4732 transitions. Second operand 7 states. [2020-10-28 13:09:06,883 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:09:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:13,553 INFO L93 Difference]: Finished difference Result 9132 states and 10207 transitions. [2020-10-28 13:09:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:09:13,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 457 [2020-10-28 13:09:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:13,587 INFO L225 Difference]: With dead ends: 9132 [2020-10-28 13:09:13,587 INFO L226 Difference]: Without dead ends: 5221 [2020-10-28 13:09:13,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:09:13,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2020-10-28 13:09:13,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 4854. [2020-10-28 13:09:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4854 states. [2020-10-28 13:09:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4854 states to 4854 states and 5377 transitions. [2020-10-28 13:09:13,734 INFO L78 Accepts]: Start accepts. Automaton has 4854 states and 5377 transitions. Word has length 457 [2020-10-28 13:09:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:13,735 INFO L481 AbstractCegarLoop]: Abstraction has 4854 states and 5377 transitions. [2020-10-28 13:09:13,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4854 states and 5377 transitions. [2020-10-28 13:09:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-28 13:09:13,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:13,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:13,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:09:13,742 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:13,743 INFO L82 PathProgramCache]: Analyzing trace with hash 598493192, now seen corresponding path program 1 times [2020-10-28 13:09:13,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:13,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111248526] [2020-10-28 13:09:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:13,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:14,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:14,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 483 [2020-10-28 13:09:14,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:14,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-28 13:09:14,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:14,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:09:14,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:09:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:14,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:14,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:14,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:09:14,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:14,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:14,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:15,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:15,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:15,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:15,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:15,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:09:15,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:15,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:15,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:15,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:15,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:09:15,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:15,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:09:15,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:15,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:15,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:15,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:15,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:09:15,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:09:15,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111248526] [2020-10-28 13:09:15,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:15,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:09:15,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646604247] [2020-10-28 13:09:15,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:09:15,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:15,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:09:15,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:09:15,552 INFO L87 Difference]: Start difference. First operand 4854 states and 5377 transitions. Second operand 5 states. [2020-10-28 13:09:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:22,910 INFO L93 Difference]: Finished difference Result 11370 states and 12850 transitions. [2020-10-28 13:09:22,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:09:22,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 469 [2020-10-28 13:09:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:22,976 INFO L225 Difference]: With dead ends: 11370 [2020-10-28 13:09:22,976 INFO L226 Difference]: Without dead ends: 6829 [2020-10-28 13:09:22,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:09:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2020-10-28 13:09:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 6814. [2020-10-28 13:09:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6814 states. [2020-10-28 13:09:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6814 states to 6814 states and 7705 transitions. [2020-10-28 13:09:23,162 INFO L78 Accepts]: Start accepts. Automaton has 6814 states and 7705 transitions. Word has length 469 [2020-10-28 13:09:23,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:23,163 INFO L481 AbstractCegarLoop]: Abstraction has 6814 states and 7705 transitions. [2020-10-28 13:09:23,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:09:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6814 states and 7705 transitions. [2020-10-28 13:09:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-28 13:09:23,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:23,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:09:23,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:09:23,172 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:23,172 INFO L82 PathProgramCache]: Analyzing trace with hash 349435149, now seen corresponding path program 1 times [2020-10-28 13:09:23,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:23,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856262103] [2020-10-28 13:09:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:23,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:28,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:28,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-28 13:09:28,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:09:28,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 13:09:28,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:28,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:09:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:09:28,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:28,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:28,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:28,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:28,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:28,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:09:28,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:28,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:28,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:28,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:28,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:09:28,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 13:09:28,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:28,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:09:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:09:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:29,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:29,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:09:29,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:29,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-28 13:09:29,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:29,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:29,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:09:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:09:29,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856262103] [2020-10-28 13:09:29,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:29,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:09:29,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873293062] [2020-10-28 13:09:29,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:09:29,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:29,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:09:29,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:09:29,990 INFO L87 Difference]: Start difference. First operand 6814 states and 7705 transitions. Second operand 8 states. [2020-10-28 13:09:34,099 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:09:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:42,634 INFO L93 Difference]: Finished difference Result 16504 states and 19155 transitions. [2020-10-28 13:09:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:09:42,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 509 [2020-10-28 13:09:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:42,673 INFO L225 Difference]: With dead ends: 16504 [2020-10-28 13:09:42,674 INFO L226 Difference]: Without dead ends: 9377 [2020-10-28 13:09:42,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:09:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9377 states. [2020-10-28 13:09:42,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9377 to 9350. [2020-10-28 13:09:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9350 states. [2020-10-28 13:09:42,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 10558 transitions. [2020-10-28 13:09:42,927 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 10558 transitions. Word has length 509 [2020-10-28 13:09:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:42,928 INFO L481 AbstractCegarLoop]: Abstraction has 9350 states and 10558 transitions. [2020-10-28 13:09:42,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:09:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 10558 transitions. [2020-10-28 13:09:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-10-28 13:09:42,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:42,937 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:42,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:09:42,938 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 959651157, now seen corresponding path program 1 times [2020-10-28 13:09:42,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:42,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586010110] [2020-10-28 13:09:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:46,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:46,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-28 13:09:46,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:09:46,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3644 [2020-10-28 13:09:46,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:46,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:09:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:09:46,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:46,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:46,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:46,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:46,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:46,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:46,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:09:46,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:46,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:47,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:47,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:47,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:47,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:09:47,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:47,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:47,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:47,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:47,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:47,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:09:47,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:09:47,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:47,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:09:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:09:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:47,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:47,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:09:47,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:09:47,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:47,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:09:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:09:47,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586010110] [2020-10-28 13:09:47,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:47,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:09:47,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140231384] [2020-10-28 13:09:47,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:09:47,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:47,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:09:47,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:09:47,735 INFO L87 Difference]: Start difference. First operand 9350 states and 10558 transitions. Second operand 7 states. [2020-10-28 13:09:47,875 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:09:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:58,533 INFO L93 Difference]: Finished difference Result 21844 states and 25286 transitions. [2020-10-28 13:09:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:09:58,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 545 [2020-10-28 13:09:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:58,580 INFO L225 Difference]: With dead ends: 21844 [2020-10-28 13:09:58,580 INFO L226 Difference]: Without dead ends: 12807 [2020-10-28 13:09:58,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:09:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12807 states. [2020-10-28 13:09:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12807 to 11222. [2020-10-28 13:09:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11222 states. [2020-10-28 13:09:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11222 states to 11222 states and 12943 transitions. [2020-10-28 13:09:58,890 INFO L78 Accepts]: Start accepts. Automaton has 11222 states and 12943 transitions. Word has length 545 [2020-10-28 13:09:58,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:58,891 INFO L481 AbstractCegarLoop]: Abstraction has 11222 states and 12943 transitions. [2020-10-28 13:09:58,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 11222 states and 12943 transitions. [2020-10-28 13:09:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-28 13:09:58,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:58,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:58,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:09:58,901 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:58,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:58,902 INFO L82 PathProgramCache]: Analyzing trace with hash 282134577, now seen corresponding path program 1 times [2020-10-28 13:09:58,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:58,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393025950] [2020-10-28 13:09:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:00,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:02,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:02,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-28 13:10:02,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:10:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3127 [2020-10-28 13:10:02,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:02,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:10:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:10:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:02,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:02,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:10:02,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:02,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:02,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:02,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:02,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:02,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:10:02,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:02,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:02,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:02,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:10:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:02,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:02,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:02,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:02,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 13:10:02,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:10:02,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:02,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:10:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:10:03,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393025950] [2020-10-28 13:10:03,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:03,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:10:03,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185521558] [2020-10-28 13:10:03,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:10:03,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:03,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:10:03,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:10:03,220 INFO L87 Difference]: Start difference. First operand 11222 states and 12943 transitions. Second operand 7 states. [2020-10-28 13:10:19,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:19,995 INFO L93 Difference]: Finished difference Result 27159 states and 31888 transitions. [2020-10-28 13:10:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:10:19,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2020-10-28 13:10:19,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:20,058 INFO L225 Difference]: With dead ends: 27159 [2020-10-28 13:10:20,058 INFO L226 Difference]: Without dead ends: 15941 [2020-10-28 13:10:20,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:10:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15941 states. [2020-10-28 13:10:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15941 to 14961. [2020-10-28 13:10:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14961 states. [2020-10-28 13:10:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14961 states to 14961 states and 17052 transitions. [2020-10-28 13:10:20,422 INFO L78 Accepts]: Start accepts. Automaton has 14961 states and 17052 transitions. Word has length 562 [2020-10-28 13:10:20,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:20,424 INFO L481 AbstractCegarLoop]: Abstraction has 14961 states and 17052 transitions. [2020-10-28 13:10:20,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:10:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 14961 states and 17052 transitions. [2020-10-28 13:10:20,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2020-10-28 13:10:20,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:20,433 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:20,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:10:20,433 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:20,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1383763470, now seen corresponding path program 1 times [2020-10-28 13:10:20,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:20,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888595426] [2020-10-28 13:10:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:20,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:21,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:25,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:25,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-28 13:10:25,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:10:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4886 [2020-10-28 13:10:25,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:25,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:10:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 13:10:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:25,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:25,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:25,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:25,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:10:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:25,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:25,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:25,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:25,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:25,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:25,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:10:25,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:25,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:25,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:25,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:26,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:26,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:26,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:10:26,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:26,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:10:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:26,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:26,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:26,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:26,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:10:26,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:26,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:10:26,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:26,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:26,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:26,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:26,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:10:26,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:10:26,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888595426] [2020-10-28 13:10:26,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:26,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:10:26,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932027269] [2020-10-28 13:10:26,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:10:26,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:26,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:10:26,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:10:26,554 INFO L87 Difference]: Start difference. First operand 14961 states and 17052 transitions. Second operand 7 states. [2020-10-28 13:10:39,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:39,050 INFO L93 Difference]: Finished difference Result 34000 states and 39838 transitions. [2020-10-28 13:10:39,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:10:39,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 575 [2020-10-28 13:10:39,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:39,113 INFO L225 Difference]: With dead ends: 34000 [2020-10-28 13:10:39,114 INFO L226 Difference]: Without dead ends: 19041 [2020-10-28 13:10:39,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:10:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19041 states. [2020-10-28 13:10:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19041 to 19033. [2020-10-28 13:10:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19033 states. [2020-10-28 13:10:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19033 states to 19033 states and 21555 transitions. [2020-10-28 13:10:39,550 INFO L78 Accepts]: Start accepts. Automaton has 19033 states and 21555 transitions. Word has length 575 [2020-10-28 13:10:39,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:39,552 INFO L481 AbstractCegarLoop]: Abstraction has 19033 states and 21555 transitions. [2020-10-28 13:10:39,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:10:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 19033 states and 21555 transitions. [2020-10-28 13:10:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2020-10-28 13:10:39,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:39,563 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:39,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:10:39,563 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:39,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:39,564 INFO L82 PathProgramCache]: Analyzing trace with hash 984071173, now seen corresponding path program 1 times [2020-10-28 13:10:39,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:39,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939030119] [2020-10-28 13:10:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:39,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:39,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:43,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:44,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:44,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-28 13:10:44,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:10:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 13:10:44,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:44,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 13:10:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:10:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:44,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:44,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:44,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:44,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:44,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:10:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:44,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:45,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:45,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:45,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:45,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:10:45,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:45,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:45,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:45,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:45,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:45,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:10:45,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:45,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:45,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:45,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:45,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:45,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:10:45,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:45,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:10:45,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:45,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:10:45,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2020-10-28 13:10:45,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939030119] [2020-10-28 13:10:45,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:45,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:10:45,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290970449] [2020-10-28 13:10:45,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:10:45,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:45,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:10:45,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:10:45,682 INFO L87 Difference]: Start difference. First operand 19033 states and 21555 transitions. Second operand 5 states. [2020-10-28 13:10:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:55,143 INFO L93 Difference]: Finished difference Result 46434 states and 53623 transitions. [2020-10-28 13:10:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:10:55,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 634 [2020-10-28 13:10:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:55,244 INFO L225 Difference]: With dead ends: 46434 [2020-10-28 13:10:55,244 INFO L226 Difference]: Without dead ends: 27403 [2020-10-28 13:10:55,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:10:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27403 states. [2020-10-28 13:10:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27403 to 26750. [2020-10-28 13:10:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26750 states. [2020-10-28 13:10:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26750 states to 26750 states and 30773 transitions. [2020-10-28 13:10:56,079 INFO L78 Accepts]: Start accepts. Automaton has 26750 states and 30773 transitions. Word has length 634 [2020-10-28 13:10:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:56,079 INFO L481 AbstractCegarLoop]: Abstraction has 26750 states and 30773 transitions. [2020-10-28 13:10:56,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:10:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 26750 states and 30773 transitions. [2020-10-28 13:10:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2020-10-28 13:10:56,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:56,101 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:56,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:10:56,102 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:56,103 INFO L82 PathProgramCache]: Analyzing trace with hash 693837817, now seen corresponding path program 1 times [2020-10-28 13:10:56,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:56,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665804510] [2020-10-28 13:10:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:57,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking...