/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/Problem14_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:56:58,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:56:58,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:56:59,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:56:59,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:56:59,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:56:59,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:56:59,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:56:59,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:56:59,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:56:59,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:56:59,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:56:59,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:56:59,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:56:59,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:56:59,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:56:59,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:56:59,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:56:59,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:56:59,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:56:59,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:56:59,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:56:59,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:56:59,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:56:59,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:56:59,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:56:59,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:56:59,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:56:59,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:56:59,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:56:59,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:56:59,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:56:59,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:56:59,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:56:59,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:56:59,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:56:59,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:56:59,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:56:59,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:56:59,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:56:59,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:56:59,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:56:59,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:56:59,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:56:59,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:56:59,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:56:59,155 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:56:59,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:56:59,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:56:59,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:56:59,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:56:59,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:56:59,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:56:59,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:56:59,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:56:59,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:56:59,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:56:59,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:56:59,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:56:59,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:56:59,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:56:59,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:56:59,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:56:59,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:56:59,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:56:59,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:56:59,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:56:59,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:56:59,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:56:59,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:56:59,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:56:59,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:56:59,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:56:59,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:56:59,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:56:59,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:56:59,654 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:56:59,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53.c [2020-10-28 12:56:59,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62e12365a/332e6adb7f6a4d87a2d1c85d9f59923a/FLAG226cd5953 [2020-10-28 12:57:00,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:57:00,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label53.c [2020-10-28 12:57:00,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62e12365a/332e6adb7f6a4d87a2d1c85d9f59923a/FLAG226cd5953 [2020-10-28 12:57:00,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62e12365a/332e6adb7f6a4d87a2d1c85d9f59923a [2020-10-28 12:57:00,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:57:00,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:57:00,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:57:00,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:57:00,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:57:00,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:57:00" (1/1) ... [2020-10-28 12:57:00,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62043c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:00, skipping insertion in model container [2020-10-28 12:57:00,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:57:00" (1/1) ... [2020-10-28 12:57:00,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:57:00,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:57:01,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:57:01,497 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:57:01,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:57:01,823 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:57:01,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01 WrapperNode [2020-10-28 12:57:01,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:57:01,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:57:01,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:57:01,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:57:01,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01" (1/1) ... [2020-10-28 12:57:01,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01" (1/1) ... [2020-10-28 12:57:01,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01" (1/1) ... [2020-10-28 12:57:01,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01" (1/1) ... [2020-10-28 12:57:01,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01" (1/1) ... [2020-10-28 12:57:01,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01" (1/1) ... [2020-10-28 12:57:02,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01" (1/1) ... [2020-10-28 12:57:02,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:57:02,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:57:02,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:57:02,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:57:02,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:57:02,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:57:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:57:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:57:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:57:02,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:57:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:57:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:57:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:57:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:57:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:57:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:57:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:57:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:57:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:57:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:57:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:57:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:57:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:57:02,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:57:04,099 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:57:04,099 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:57:04,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:57:04 BoogieIcfgContainer [2020-10-28 12:57:04,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:57:04,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:57:04,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:57:04,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:57:04,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:57:00" (1/3) ... [2020-10-28 12:57:04,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2354df66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:57:04, skipping insertion in model container [2020-10-28 12:57:04,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:57:01" (2/3) ... [2020-10-28 12:57:04,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2354df66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:57:04, skipping insertion in model container [2020-10-28 12:57:04,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:57:04" (3/3) ... [2020-10-28 12:57:04,115 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label53.c [2020-10-28 12:57:04,128 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:57:04,135 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:57:04,151 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:57:04,210 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:57:04,210 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:57:04,210 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:57:04,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:57:04,211 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:57:04,211 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:57:04,211 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:57:04,211 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:57:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-28 12:57:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 12:57:04,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:04,275 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] [2020-10-28 12:57:04,276 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:04,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:04,297 INFO L82 PathProgramCache]: Analyzing trace with hash -572014888, now seen corresponding path program 1 times [2020-10-28 12:57:04,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:04,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699896848] [2020-10-28 12:57:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:05,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:05,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 12:57:05,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-28 12:57:05,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:05,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:05,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:57:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:57:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 12:57:05,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:57:05,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:05,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:05,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:05,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:05,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:05,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:57:05,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:05,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:05,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:57:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:57:05,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699896848] [2020-10-28 12:57:05,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:57:05,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:57:05,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655023311] [2020-10-28 12:57:05,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:57:05,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:05,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:57:05,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:57:05,506 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-28 12:57:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:07,905 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-28 12:57:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:57:07,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-28 12:57:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:07,924 INFO L225 Difference]: With dead ends: 703 [2020-10-28 12:57:07,924 INFO L226 Difference]: Without dead ends: 381 [2020-10-28 12:57:07,932 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 12:57:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-28 12:57:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-28 12:57:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-28 12:57:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-28 12:57:08,049 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 56 [2020-10-28 12:57:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:08,050 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-28 12:57:08,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:57:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-28 12:57:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 12:57:08,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:08,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:57:08,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:57:08,063 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:08,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:08,063 INFO L82 PathProgramCache]: Analyzing trace with hash -24200508, now seen corresponding path program 1 times [2020-10-28 12:57:08,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:08,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210776665] [2020-10-28 12:57:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:09,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:09,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:09,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:57:09,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:57:09,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1478 [2020-10-28 12:57:09,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:09,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:57:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:57:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:57:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:09,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:09,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:09,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:09,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:09,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:57:09,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:09,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:57:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:09,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:09,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:09,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:57:09,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 12:57:09,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:09,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:57:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:57:09,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210776665] [2020-10-28 12:57:09,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:57:09,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:57:09,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721595697] [2020-10-28 12:57:09,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:09,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:09,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:09,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:09,985 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 7 states. [2020-10-28 12:57:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:12,804 INFO L93 Difference]: Finished difference Result 1134 states and 1859 transitions. [2020-10-28 12:57:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:57:12,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-28 12:57:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:12,814 INFO L225 Difference]: With dead ends: 1134 [2020-10-28 12:57:12,814 INFO L226 Difference]: Without dead ends: 765 [2020-10-28 12:57:12,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:57:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-10-28 12:57:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 567. [2020-10-28 12:57:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-28 12:57:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 876 transitions. [2020-10-28 12:57:12,883 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 876 transitions. Word has length 125 [2020-10-28 12:57:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:12,886 INFO L481 AbstractCegarLoop]: Abstraction has 567 states and 876 transitions. [2020-10-28 12:57:12,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:12,886 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 876 transitions. [2020-10-28 12:57:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 12:57:12,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:12,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:57:12,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:57:12,891 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1038552920, now seen corresponding path program 1 times [2020-10-28 12:57:12,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:12,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866759396] [2020-10-28 12:57:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:14,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:14,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 12:57:14,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:57:14,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1570 [2020-10-28 12:57:14,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:14,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:57:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:57:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:57:14,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:14,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:14,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:14,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:14,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:57:14,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:14,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:57:14,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:14,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:14,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:14,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:57:14,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 12:57:14,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:14,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:57:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:57:15,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866759396] [2020-10-28 12:57:15,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:57:15,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:57:15,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9587982] [2020-10-28 12:57:15,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:15,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:15,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:15,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:15,070 INFO L87 Difference]: Start difference. First operand 567 states and 876 transitions. Second operand 7 states. [2020-10-28 12:57:17,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:17,964 INFO L93 Difference]: Finished difference Result 1510 states and 2340 transitions. [2020-10-28 12:57:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:57:17,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-28 12:57:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:17,974 INFO L225 Difference]: With dead ends: 1510 [2020-10-28 12:57:17,974 INFO L226 Difference]: Without dead ends: 949 [2020-10-28 12:57:17,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:57:17,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-10-28 12:57:18,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 939. [2020-10-28 12:57:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2020-10-28 12:57:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1312 transitions. [2020-10-28 12:57:18,021 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1312 transitions. Word has length 139 [2020-10-28 12:57:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:18,022 INFO L481 AbstractCegarLoop]: Abstraction has 939 states and 1312 transitions. [2020-10-28 12:57:18,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1312 transitions. [2020-10-28 12:57:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-28 12:57:18,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:18,027 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, 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] [2020-10-28 12:57:18,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:57:18,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:18,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:18,028 INFO L82 PathProgramCache]: Analyzing trace with hash -891713472, now seen corresponding path program 1 times [2020-10-28 12:57:18,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:18,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831847002] [2020-10-28 12:57:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:18,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:18,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:18,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:21,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:23,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-28 12:57:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:57:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 12:57:23,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:23,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-28 12:57:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:57:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:23,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:23,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:23,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:23,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:57:23,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:23,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:23,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:23,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:23,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:23,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:23,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:57:23,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:23,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:57:23,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:23,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:23,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 12:57:23,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:23,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 12:57:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:23,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:23,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:23,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:57:23,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:57:23,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:23,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:57:23,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:57:23,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831847002] [2020-10-28 12:57:23,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:23,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:57:23,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842222277] [2020-10-28 12:57:23,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:23,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:23,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:23,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:23,646 INFO L87 Difference]: Start difference. First operand 939 states and 1312 transitions. Second operand 7 states. [2020-10-28 12:57:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:26,560 INFO L93 Difference]: Finished difference Result 2086 states and 3138 transitions. [2020-10-28 12:57:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:57:26,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-28 12:57:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:26,571 INFO L225 Difference]: With dead ends: 2086 [2020-10-28 12:57:26,571 INFO L226 Difference]: Without dead ends: 1519 [2020-10-28 12:57:26,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:57:26,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-10-28 12:57:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1315. [2020-10-28 12:57:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-10-28 12:57:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1759 transitions. [2020-10-28 12:57:26,644 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1759 transitions. Word has length 209 [2020-10-28 12:57:26,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:26,646 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1759 transitions. [2020-10-28 12:57:26,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1759 transitions. [2020-10-28 12:57:26,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-28 12:57:26,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:26,655 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:57:26,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:57:26,656 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:26,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:26,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2045905384, now seen corresponding path program 1 times [2020-10-28 12:57:26,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:26,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571956895] [2020-10-28 12:57:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:26,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:29,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:31,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-28 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4653 [2020-10-28 12:57:31,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:31,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:57:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:57:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 12:57:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:31,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:31,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:31,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:31,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:31,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:57:31,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:31,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:31,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:31,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:57:31,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:57:31,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:31,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:31,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:57:31,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 12:57:31,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:31,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:57:31,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:57:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 12:57:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:32,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:32,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:57:32,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:57:32,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:32,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:57:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 96 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:57:32,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571956895] [2020-10-28 12:57:32,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:32,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:57:32,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460187243] [2020-10-28 12:57:32,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:32,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:32,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:32,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:32,267 INFO L87 Difference]: Start difference. First operand 1315 states and 1759 transitions. Second operand 7 states. [2020-10-28 12:57:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:34,584 INFO L93 Difference]: Finished difference Result 2466 states and 3352 transitions. [2020-10-28 12:57:34,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:57:34,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-28 12:57:34,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:34,605 INFO L225 Difference]: With dead ends: 2466 [2020-10-28 12:57:34,606 INFO L226 Difference]: Without dead ends: 1339 [2020-10-28 12:57:34,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:57:34,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-10-28 12:57:34,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1317. [2020-10-28 12:57:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-28 12:57:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1726 transitions. [2020-10-28 12:57:34,660 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1726 transitions. Word has length 269 [2020-10-28 12:57:34,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:34,661 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1726 transitions. [2020-10-28 12:57:34,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1726 transitions. [2020-10-28 12:57:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-28 12:57:34,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:34,670 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:57:34,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:57:34,670 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:34,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1283142860, now seen corresponding path program 1 times [2020-10-28 12:57:34,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:34,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066468747] [2020-10-28 12:57:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:34,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:38,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:39,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:39,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-28 12:57:39,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:57:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4745 [2020-10-28 12:57:39,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:39,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 12:57:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 12:57:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:39,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:39,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:39,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:39,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:39,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:39,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:57:39,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:39,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:39,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:39,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:39,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:57:39,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 12:57:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:39,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:57:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:39,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 12:57:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:39,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:57:39,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-28 12:57:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:39,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:57:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 12:57:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:40,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:40,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:40,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:57:40,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:40,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:57:40,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:40,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:57:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:40,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 229 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-28 12:57:40,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066468747] [2020-10-28 12:57:40,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:40,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:57:40,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011868674] [2020-10-28 12:57:40,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:57:40,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:57:40,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:57:40,615 INFO L87 Difference]: Start difference. First operand 1317 states and 1726 transitions. Second operand 7 states. [2020-10-28 12:57:43,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:43,803 INFO L93 Difference]: Finished difference Result 2848 states and 3827 transitions. [2020-10-28 12:57:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:57:43,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-28 12:57:43,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:43,817 INFO L225 Difference]: With dead ends: 2848 [2020-10-28 12:57:43,817 INFO L226 Difference]: Without dead ends: 1521 [2020-10-28 12:57:43,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:57:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2020-10-28 12:57:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1503. [2020-10-28 12:57:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2020-10-28 12:57:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1709 transitions. [2020-10-28 12:57:43,874 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1709 transitions. Word has length 353 [2020-10-28 12:57:43,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:43,874 INFO L481 AbstractCegarLoop]: Abstraction has 1503 states and 1709 transitions. [2020-10-28 12:57:43,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:57:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1709 transitions. [2020-10-28 12:57:43,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-28 12:57:43,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:43,882 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:57:43,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:57:43,883 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:43,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:43,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1481080996, now seen corresponding path program 1 times [2020-10-28 12:57:43,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:43,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924561731] [2020-10-28 12:57:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:43,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:48,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:48,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-28 12:57:48,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:57:48,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 12:57:48,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:48,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:57:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-28 12:57:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-28 12:57:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:49,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:49,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:49,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:49,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:49,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:57:49,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:49,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:49,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:49,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:49,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:57:49,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 12:57:49,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:49,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:49,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:49,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:49,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:57:49,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:57:49,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:57:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:49,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:49,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:49,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:57:49,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:57:49,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:57:49,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:49,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:49,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:49,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:49,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:57:49,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:49,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:57:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:49,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:49,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:57:49,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:49,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 12:57:49,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:49,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:57:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:50,034 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 304 proven. 8 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-28 12:57:50,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924561731] [2020-10-28 12:57:50,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:50,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:57:50,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961129707] [2020-10-28 12:57:50,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:57:50,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:50,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:57:50,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:57:50,039 INFO L87 Difference]: Start difference. First operand 1503 states and 1709 transitions. Second operand 8 states. [2020-10-28 12:57:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:57:53,067 INFO L93 Difference]: Finished difference Result 3956 states and 4739 transitions. [2020-10-28 12:57:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:57:53,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 358 [2020-10-28 12:57:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:57:53,081 INFO L225 Difference]: With dead ends: 3956 [2020-10-28 12:57:53,082 INFO L226 Difference]: Without dead ends: 2825 [2020-10-28 12:57:53,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:57:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2020-10-28 12:57:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2443. [2020-10-28 12:57:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2443 states. [2020-10-28 12:57:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 2754 transitions. [2020-10-28 12:57:53,176 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 2754 transitions. Word has length 358 [2020-10-28 12:57:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:57:53,177 INFO L481 AbstractCegarLoop]: Abstraction has 2443 states and 2754 transitions. [2020-10-28 12:57:53,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:57:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 2754 transitions. [2020-10-28 12:57:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-28 12:57:53,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:57:53,189 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, 4, 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, 2, 2, 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] [2020-10-28 12:57:53,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:57:53,190 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:57:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:57:53,191 INFO L82 PathProgramCache]: Analyzing trace with hash 237390280, now seen corresponding path program 1 times [2020-10-28 12:57:53,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:57:53,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814347046] [2020-10-28 12:57:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:57:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:56,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:58,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:58,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-28 12:57:58,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:57:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 12:57:58,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:58,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:58,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 306 [2020-10-28 12:57:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:57:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:58,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:57:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:58,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:58,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:58,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:57:58,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:57:58,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:58,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:58,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:57:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:58,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:58,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:57:58,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:57:58,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:58,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:58,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:58,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:57:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:58,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:58,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:57:58,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:58,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:57:58,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:58,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:57:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:57:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:58,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:57:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:58,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:58,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:57:58,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:58,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:57:58,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:58,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:57:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:57:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:57:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:58,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-28 12:57:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:57:58,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:57:58,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:57:58,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:57:58,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:57:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 12:57:58,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:57:58,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:57:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:57:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:57:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:57:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:57:59,073 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 432 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-28 12:57:59,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814347046] [2020-10-28 12:57:59,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:57:59,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:57:59,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805992639] [2020-10-28 12:57:59,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:57:59,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:57:59,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:57:59,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:57:59,076 INFO L87 Difference]: Start difference. First operand 2443 states and 2754 transitions. Second operand 8 states. [2020-10-28 12:58:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:02,348 INFO L93 Difference]: Finished difference Result 4710 states and 5401 transitions. [2020-10-28 12:58:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:58:02,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-10-28 12:58:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:02,359 INFO L225 Difference]: With dead ends: 4710 [2020-10-28 12:58:02,359 INFO L226 Difference]: Without dead ends: 2079 [2020-10-28 12:58:02,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:58:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2020-10-28 12:58:02,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2063. [2020-10-28 12:58:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2063 states. [2020-10-28 12:58:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 2227 transitions. [2020-10-28 12:58:02,427 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 2227 transitions. Word has length 431 [2020-10-28 12:58:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:02,428 INFO L481 AbstractCegarLoop]: Abstraction has 2063 states and 2227 transitions. [2020-10-28 12:58:02,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:58:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 2227 transitions. [2020-10-28 12:58:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-28 12:58:02,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:02,450 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 12:58:02,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:58:02,450 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:02,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1527776716, now seen corresponding path program 1 times [2020-10-28 12:58:02,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:02,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151702744] [2020-10-28 12:58:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:05,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:07,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:07,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 671 [2020-10-28 12:58:07,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:58:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 12:58:07,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:07,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:58:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:58:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 12:58:07,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:07,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:07,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:07,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:07,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:07,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:07,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:58:07,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:07,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:58:07,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:07,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:07,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:07,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:07,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:07,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:58:07,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:07,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:07,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:07,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:07,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:07,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:08,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:08,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:08,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:58:08,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:08,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:58:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:08,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:08,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:08,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:58:08,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 12:58:08,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:08,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:58:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:08,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:58:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:08,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:08,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:08,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:08,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 12:58:08,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:08,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:08,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:58:08,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:08,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-28 12:58:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:08,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:08,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:08,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:58:08,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:58:08,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:08,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:58:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 795 proven. 158 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-28 12:58:08,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151702744] [2020-10-28 12:58:08,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:08,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:58:08,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518597307] [2020-10-28 12:58:08,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:58:08,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:08,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:58:08,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:58:08,929 INFO L87 Difference]: Start difference. First operand 2063 states and 2227 transitions. Second operand 8 states. [2020-10-28 12:58:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:11,507 INFO L93 Difference]: Finished difference Result 4518 states and 4974 transitions. [2020-10-28 12:58:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:58:11,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 651 [2020-10-28 12:58:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:11,522 INFO L225 Difference]: With dead ends: 4518 [2020-10-28 12:58:11,522 INFO L226 Difference]: Without dead ends: 2827 [2020-10-28 12:58:11,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:58:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-10-28 12:58:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2627. [2020-10-28 12:58:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2627 states. [2020-10-28 12:58:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 2850 transitions. [2020-10-28 12:58:11,598 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 2850 transitions. Word has length 651 [2020-10-28 12:58:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:11,599 INFO L481 AbstractCegarLoop]: Abstraction has 2627 states and 2850 transitions. [2020-10-28 12:58:11,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:58:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 2850 transitions. [2020-10-28 12:58:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-10-28 12:58:11,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:11,609 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:58:11,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:58:11,609 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:11,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1804675500, now seen corresponding path program 1 times [2020-10-28 12:58:11,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:11,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379473959] [2020-10-28 12:58:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:11,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:12,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:16,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:16,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 687 [2020-10-28 12:58:16,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:58:16,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 12:58:16,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:16,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-28 12:58:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:58:16,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:16,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:16,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:16,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:16,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:58:16,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:16,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:16,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:16,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:16,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:58:16,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:16,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:16,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:17,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:17,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:17,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:17,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:17,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:58:17,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:17,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:17,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:17,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:17,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:17,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:17,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:58:17,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:58:17,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:17,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 12:58:17,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:17,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-28 12:58:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:17,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:17,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:17,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:17,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 12:58:17,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:17,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:58:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:58:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-28 12:58:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:18,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:18,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:58:18,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:58:18,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:18,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:58:18,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:18,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:58:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 605 proven. 79 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-10-28 12:58:19,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379473959] [2020-10-28 12:58:19,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:19,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:58:19,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321313994] [2020-10-28 12:58:19,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:58:19,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:19,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:58:19,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:58:19,774 INFO L87 Difference]: Start difference. First operand 2627 states and 2850 transitions. Second operand 8 states. [2020-10-28 12:58:23,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:23,495 INFO L93 Difference]: Finished difference Result 6368 states and 6992 transitions. [2020-10-28 12:58:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:58:23,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 667 [2020-10-28 12:58:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:23,518 INFO L225 Difference]: With dead ends: 6368 [2020-10-28 12:58:23,518 INFO L226 Difference]: Without dead ends: 3929 [2020-10-28 12:58:23,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:58:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2020-10-28 12:58:23,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3737. [2020-10-28 12:58:23,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3737 states. [2020-10-28 12:58:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 4060 transitions. [2020-10-28 12:58:23,624 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 4060 transitions. Word has length 667 [2020-10-28 12:58:23,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:23,625 INFO L481 AbstractCegarLoop]: Abstraction has 3737 states and 4060 transitions. [2020-10-28 12:58:23,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:58:23,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 4060 transitions. [2020-10-28 12:58:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2020-10-28 12:58:23,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:23,636 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:58:23,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:58:23,637 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1274385324, now seen corresponding path program 1 times [2020-10-28 12:58:23,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:23,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271932620] [2020-10-28 12:58:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:23,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:24,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:28,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:28,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 731 [2020-10-28 12:58:28,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:58:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 12:58:28,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:28,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 410 [2020-10-28 12:58:28,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:58:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:28,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:28,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:28,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:28,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:58:28,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:28,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:58:28,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:28,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:28,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:28,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:28,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:58:28,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:28,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:28,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:28,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:29,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:29,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:29,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:29,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:58:29,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:29,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:29,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:29,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:29,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:29,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:29,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:29,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:58:29,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:29,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:58:29,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:29,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:29,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:29,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 12:58:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:29,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-28 12:58:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:29,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:29,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:29,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:58:29,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:29,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:58:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-28 12:58:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:29,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:29,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:29,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:58:29,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:29,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:58:29,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:29,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:58:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1284 backedges. 649 proven. 79 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-10-28 12:58:29,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271932620] [2020-10-28 12:58:29,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:29,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:58:29,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362670829] [2020-10-28 12:58:29,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:58:29,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:29,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:58:29,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:58:29,928 INFO L87 Difference]: Start difference. First operand 3737 states and 4060 transitions. Second operand 7 states. [2020-10-28 12:58:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:32,157 INFO L93 Difference]: Finished difference Result 8397 states and 9194 transitions. [2020-10-28 12:58:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:58:32,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 711 [2020-10-28 12:58:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:32,188 INFO L225 Difference]: With dead ends: 8397 [2020-10-28 12:58:32,189 INFO L226 Difference]: Without dead ends: 5032 [2020-10-28 12:58:32,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:58:32,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5032 states. [2020-10-28 12:58:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5032 to 4293. [2020-10-28 12:58:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4293 states. [2020-10-28 12:58:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4293 states to 4293 states and 4710 transitions. [2020-10-28 12:58:32,314 INFO L78 Accepts]: Start accepts. Automaton has 4293 states and 4710 transitions. Word has length 711 [2020-10-28 12:58:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:32,315 INFO L481 AbstractCegarLoop]: Abstraction has 4293 states and 4710 transitions. [2020-10-28 12:58:32,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:58:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4293 states and 4710 transitions. [2020-10-28 12:58:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-28 12:58:32,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:32,329 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:58:32,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:58:32,330 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:32,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1333469360, now seen corresponding path program 1 times [2020-10-28 12:58:32,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:32,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34577194] [2020-10-28 12:58:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:34,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:37,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:37,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 809 [2020-10-28 12:58:37,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:58:37,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 12:58:37,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:37,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:37,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:58:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:58:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:37,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:37,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:37,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:37,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:37,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:58:37,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:37,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:37,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:37,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:37,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:37,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:37,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:58:37,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:37,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:37,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:37,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:37,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:58:37,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:37,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:58:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:37,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:37,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:58:37,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:58:37,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:37,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:58:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:38,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-28 12:58:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:38,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:38,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:38,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:58:38,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:58:38,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:38,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 12:58:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:38,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-10-28 12:58:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:38,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:38,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:38,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:38,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:58:38,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:38,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:58:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:38,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-28 12:58:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:38,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:38,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:58:38,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:38,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:58:38,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:38,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:58:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:38,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 530 proven. 326 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2020-10-28 12:58:38,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34577194] [2020-10-28 12:58:38,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:38,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:58:38,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938431877] [2020-10-28 12:58:38,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:58:38,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:38,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:58:38,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:58:38,909 INFO L87 Difference]: Start difference. First operand 4293 states and 4710 transitions. Second operand 7 states. [2020-10-28 12:58:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:41,021 INFO L93 Difference]: Finished difference Result 8772 states and 9682 transitions. [2020-10-28 12:58:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:58:41,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 787 [2020-10-28 12:58:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:41,046 INFO L225 Difference]: With dead ends: 8772 [2020-10-28 12:58:41,046 INFO L226 Difference]: Without dead ends: 4851 [2020-10-28 12:58:41,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:58:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2020-10-28 12:58:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4845. [2020-10-28 12:58:41,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2020-10-28 12:58:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 5308 transitions. [2020-10-28 12:58:41,227 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 5308 transitions. Word has length 787 [2020-10-28 12:58:41,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:41,228 INFO L481 AbstractCegarLoop]: Abstraction has 4845 states and 5308 transitions. [2020-10-28 12:58:41,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:58:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 5308 transitions. [2020-10-28 12:58:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-28 12:58:41,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:41,241 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:58:41,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:58:41,241 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:41,242 INFO L82 PathProgramCache]: Analyzing trace with hash -138586612, now seen corresponding path program 1 times [2020-10-28 12:58:41,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:41,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781033763] [2020-10-28 12:58:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:41,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:46,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:46,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-28 12:58:46,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:58:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 12:58:46,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:46,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-28 12:58:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:58:46,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:46,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:46,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:46,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:46,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:58:46,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:46,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:58:46,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:46,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:46,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:46,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:46,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:58:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:46,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:58:46,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:46,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:46,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:46,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:46,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:58:46,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:46,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:46,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:46,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:58:46,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:46,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:58:46,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:46,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:46,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:46,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:46,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:46,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:46,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:58:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:46,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:46,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:58:46,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:46,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:58:46,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:46,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:58:46,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:46,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:58:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:47,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:47,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:47,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:47,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:58:47,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:47,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:58:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:47,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-28 12:58:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:47,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:47,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:58:47,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:58:47,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:47,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:58:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 802 proven. 79 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-28 12:58:47,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781033763] [2020-10-28 12:58:47,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:47,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:58:47,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849686135] [2020-10-28 12:58:47,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:58:47,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:47,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:58:47,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:58:47,710 INFO L87 Difference]: Start difference. First operand 4845 states and 5308 transitions. Second operand 7 states. [2020-10-28 12:58:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:49,958 INFO L93 Difference]: Finished difference Result 10421 states and 11424 transitions. [2020-10-28 12:58:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:58:49,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 810 [2020-10-28 12:58:49,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:49,979 INFO L225 Difference]: With dead ends: 10421 [2020-10-28 12:58:49,979 INFO L226 Difference]: Without dead ends: 5948 [2020-10-28 12:58:49,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:58:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5948 states. [2020-10-28 12:58:50,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5948 to 4847. [2020-10-28 12:58:50,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4847 states. [2020-10-28 12:58:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 5314 transitions. [2020-10-28 12:58:50,140 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 5314 transitions. Word has length 810 [2020-10-28 12:58:50,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:50,142 INFO L481 AbstractCegarLoop]: Abstraction has 4847 states and 5314 transitions. [2020-10-28 12:58:50,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:58:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 5314 transitions. [2020-10-28 12:58:50,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2020-10-28 12:58:50,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:50,156 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:58:50,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:58:50,156 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:50,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:50,157 INFO L82 PathProgramCache]: Analyzing trace with hash -82243152, now seen corresponding path program 1 times [2020-10-28 12:58:50,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:50,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416689631] [2020-10-28 12:58:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:51,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:55,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:55,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 910 [2020-10-28 12:58:55,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:58:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 12:58:55,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:55,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 770 [2020-10-28 12:58:55,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:58:55,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:58:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:55,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:55,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:58:55,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:58:55,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:55,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:55,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:58:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:55,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:55,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:58:55,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:55,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:58:55,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:55,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:55,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:55,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:55,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:55,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:58:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:55,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:55,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:58:55,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:58:55,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:55,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:55,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:58:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:55,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:55,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:58:55,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:58:55,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:55,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:55,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:55,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:55,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:58:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:55,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:55,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:58:55,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:55,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:58:55,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:55,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:55,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:58:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:55,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:55,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:58:55,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:55,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:58:55,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:55,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:58:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:58:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:55,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-28 12:58:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:55,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:58:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:58:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:55,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:58:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:58:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 12:58:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-10-28 12:58:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:56,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:58:56,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:58:56,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:58:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:58:56,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:58:56,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:58:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:58:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:58:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:58:56,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:58:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2351 backedges. 819 proven. 2 refuted. 0 times theorem prover too weak. 1530 trivial. 0 not checked. [2020-10-28 12:58:56,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416689631] [2020-10-28 12:58:56,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:58:56,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:58:56,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008423626] [2020-10-28 12:58:56,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:58:56,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:58:56,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:58:56,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:58:56,478 INFO L87 Difference]: Start difference. First operand 4847 states and 5314 transitions. Second operand 7 states. [2020-10-28 12:58:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:58:58,469 INFO L93 Difference]: Finished difference Result 10054 states and 11158 transitions. [2020-10-28 12:58:58,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:58:58,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 886 [2020-10-28 12:58:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:58:58,558 INFO L225 Difference]: With dead ends: 10054 [2020-10-28 12:58:58,558 INFO L226 Difference]: Without dead ends: 5579 [2020-10-28 12:58:58,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 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 12:58:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2020-10-28 12:58:58,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5395. [2020-10-28 12:58:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5395 states. [2020-10-28 12:58:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5395 states to 5395 states and 5984 transitions. [2020-10-28 12:58:58,690 INFO L78 Accepts]: Start accepts. Automaton has 5395 states and 5984 transitions. Word has length 886 [2020-10-28 12:58:58,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:58:58,692 INFO L481 AbstractCegarLoop]: Abstraction has 5395 states and 5984 transitions. [2020-10-28 12:58:58,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:58:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5395 states and 5984 transitions. [2020-10-28 12:58:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2020-10-28 12:58:58,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:58:58,709 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:58:58,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:58:58,709 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:58:58,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:58:58,710 INFO L82 PathProgramCache]: Analyzing trace with hash 946290688, now seen corresponding path program 1 times [2020-10-28 12:58:58,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:58:58,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842133858] [2020-10-28 12:58:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:58:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:58:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:59,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:58:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:03,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:03,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 931 [2020-10-28 12:59:03,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:59:03,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-28 12:59:03,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:03,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-28 12:59:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:59:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:04,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:59:04,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:04,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:04,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:59:04,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:04,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:04,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:59:04,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:04,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:04,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:59:04,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:04,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:04,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:59:04,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:04,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 12:59:04,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:59:04,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-28 12:59:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:04,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:59:04,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:04,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 12:59:04,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-28 12:59:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:04,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:04,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:04,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:59:04,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:04,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 12:59:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:05,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-28 12:59:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:05,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:05,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:59:05,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:05,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:59:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:05,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 12:59:05,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2384 backedges. 709 proven. 329 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2020-10-28 12:59:05,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842133858] [2020-10-28 12:59:05,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:05,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:59:05,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118059161] [2020-10-28 12:59:05,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:59:05,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:05,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:59:05,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:59:05,775 INFO L87 Difference]: Start difference. First operand 5395 states and 5984 transitions. Second operand 8 states. [2020-10-28 12:59:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:07,765 INFO L93 Difference]: Finished difference Result 10970 states and 12202 transitions. [2020-10-28 12:59:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:59:07,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 907 [2020-10-28 12:59:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:07,788 INFO L225 Difference]: With dead ends: 10970 [2020-10-28 12:59:07,788 INFO L226 Difference]: Without dead ends: 5947 [2020-10-28 12:59:07,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:59:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5947 states. [2020-10-28 12:59:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5947 to 5763. [2020-10-28 12:59:07,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5763 states. [2020-10-28 12:59:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5763 states to 5763 states and 6368 transitions. [2020-10-28 12:59:07,928 INFO L78 Accepts]: Start accepts. Automaton has 5763 states and 6368 transitions. Word has length 907 [2020-10-28 12:59:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:07,929 INFO L481 AbstractCegarLoop]: Abstraction has 5763 states and 6368 transitions. [2020-10-28 12:59:07,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:59:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5763 states and 6368 transitions. [2020-10-28 12:59:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-28 12:59:07,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:07,946 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:07,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:59:07,946 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:07,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:07,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1420547652, now seen corresponding path program 1 times [2020-10-28 12:59:07,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:07,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049311292] [2020-10-28 12:59:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:08,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:11,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:11,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-28 12:59:11,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:59:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3858 [2020-10-28 12:59:11,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:11,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-28 12:59:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:59:11,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:12,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:12,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:59:12,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:12,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:12,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:12,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:12,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:12,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:12,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:12,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:59:12,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:12,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:12,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:12,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:12,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:12,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:59:12,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:12,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:12,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:12,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:12,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:12,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:12,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:12,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:12,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:12,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:12,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:59:12,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:12,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:12,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:12,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:59:12,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:59:12,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:12,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:59:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:12,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:12,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:12,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:12,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:59:12,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:12,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:59:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:12,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:12,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:12,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:12,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:59:12,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:12,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:12,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:12,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:59:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:12,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:12,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:12,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:12,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:12,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 12:59:12,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:12,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-28 12:59:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:12,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:59:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:12,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:12,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:59:12,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:12,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 12:59:12,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:12,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:12,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:12,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:59:12,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2994 backedges. 965 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-28 12:59:13,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049311292] [2020-10-28 12:59:13,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:13,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:59:13,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32992383] [2020-10-28 12:59:13,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:59:13,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:13,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:59:13,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:13,516 INFO L87 Difference]: Start difference. First operand 5763 states and 6368 transitions. Second operand 7 states. [2020-10-28 12:59:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:15,854 INFO L93 Difference]: Finished difference Result 11160 states and 12364 transitions. [2020-10-28 12:59:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:59:15,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 988 [2020-10-28 12:59:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:15,876 INFO L225 Difference]: With dead ends: 11160 [2020-10-28 12:59:15,877 INFO L226 Difference]: Without dead ends: 5769 [2020-10-28 12:59:15,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 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 12:59:15,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2020-10-28 12:59:16,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 5769. [2020-10-28 12:59:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5769 states. [2020-10-28 12:59:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 6279 transitions. [2020-10-28 12:59:16,110 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 6279 transitions. Word has length 988 [2020-10-28 12:59:16,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:16,111 INFO L481 AbstractCegarLoop]: Abstraction has 5769 states and 6279 transitions. [2020-10-28 12:59:16,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:59:16,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 6279 transitions. [2020-10-28 12:59:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-28 12:59:16,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:16,134 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:16,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:59:16,134 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:16,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:16,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1344204940, now seen corresponding path program 1 times [2020-10-28 12:59:16,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:16,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768944593] [2020-10-28 12:59:16,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:16,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:18,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:18,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-28 12:59:18,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:18,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2323 [2020-10-28 12:59:18,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:18,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:18,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:59:18,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-28 12:59:18,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-28 12:59:18,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:18,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:18,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:59:18,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:18,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:18,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:18,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:18,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:19,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:19,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:19,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:19,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:59:19,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:19,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:19,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:19,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:19,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:19,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:19,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:59:19,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:19,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:19,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:19,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:19,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:19,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:19,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:19,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:59:19,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:19,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:19,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:19,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:19,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:19,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:59:19,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:19,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:59:19,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:19,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:19,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:19,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:59:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:19,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:19,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:19,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:19,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:19,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:59:19,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:19,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:19,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:59:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:19,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:19,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:59:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:19,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:59:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:19,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:59:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:19,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:19,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:19,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:19,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 12:59:19,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:19,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:19,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:59:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:59:19,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:19,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:59:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:20,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:20,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:20,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:59:20,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:20,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:59:20,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:20,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:59:20,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3009 backedges. 1637 proven. 6 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-28 12:59:21,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768944593] [2020-10-28 12:59:21,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:21,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 12:59:21,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268535332] [2020-10-28 12:59:21,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 12:59:21,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:21,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 12:59:21,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:59:21,140 INFO L87 Difference]: Start difference. First operand 5769 states and 6279 transitions. Second operand 10 states. [2020-10-28 12:59:24,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:24,383 INFO L93 Difference]: Finished difference Result 12814 states and 13939 transitions. [2020-10-28 12:59:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 12:59:24,383 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 991 [2020-10-28 12:59:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:24,405 INFO L225 Difference]: With dead ends: 12814 [2020-10-28 12:59:24,405 INFO L226 Difference]: Without dead ends: 7417 [2020-10-28 12:59:24,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-28 12:59:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7417 states. [2020-10-28 12:59:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7417 to 6321. [2020-10-28 12:59:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6321 states. [2020-10-28 12:59:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6321 states to 6321 states and 6865 transitions. [2020-10-28 12:59:24,545 INFO L78 Accepts]: Start accepts. Automaton has 6321 states and 6865 transitions. Word has length 991 [2020-10-28 12:59:24,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:24,547 INFO L481 AbstractCegarLoop]: Abstraction has 6321 states and 6865 transitions. [2020-10-28 12:59:24,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 12:59:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6321 states and 6865 transitions. [2020-10-28 12:59:24,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1457 [2020-10-28 12:59:24,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:24,574 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:24,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:59:24,574 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:24,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:24,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1080211176, now seen corresponding path program 1 times [2020-10-28 12:59:24,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:24,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597157466] [2020-10-28 12:59:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:24,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:26,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1488 [2020-10-28 12:59:26,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:59:26,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1825 [2020-10-28 12:59:26,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:26,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-28 12:59:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 12:59:26,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:26,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:26,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:26,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:26,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:59:26,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:26,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:26,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:26,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:26,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:26,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:26,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:26,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:26,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:59:26,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:26,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:26,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:26,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:27,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:59:27,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:27,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:27,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:59:27,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:27,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:27,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:59:27,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:59:27,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:27,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:59:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:27,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:59:27,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:27,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:59:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:27,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:59:27,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:27,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:59:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:27,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:59:27,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:27,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:27,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:27,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:59:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:59:27,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:59:27,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:59:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:59:27,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:59:27,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:27,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:27,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:59:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:59:27,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:59:27,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:27,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:59:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:27,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:27,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 12:59:27,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:59:27,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:27,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:59:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6335 backedges. 547 proven. 11 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2020-10-28 12:59:28,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597157466] [2020-10-28 12:59:28,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:28,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:59:28,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702551072] [2020-10-28 12:59:28,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:59:28,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:28,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:59:28,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:59:28,852 INFO L87 Difference]: Start difference. First operand 6321 states and 6865 transitions. Second operand 5 states. [2020-10-28 12:59:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:30,913 INFO L93 Difference]: Finished difference Result 12270 states and 13355 transitions. [2020-10-28 12:59:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:59:30,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1456 [2020-10-28 12:59:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:30,939 INFO L225 Difference]: With dead ends: 12270 [2020-10-28 12:59:30,939 INFO L226 Difference]: Without dead ends: 6321 [2020-10-28 12:59:30,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 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 12:59:30,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2020-10-28 12:59:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 5957. [2020-10-28 12:59:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5957 states. [2020-10-28 12:59:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5957 states to 5957 states and 6381 transitions. [2020-10-28 12:59:31,080 INFO L78 Accepts]: Start accepts. Automaton has 5957 states and 6381 transitions. Word has length 1456 [2020-10-28 12:59:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:31,082 INFO L481 AbstractCegarLoop]: Abstraction has 5957 states and 6381 transitions. [2020-10-28 12:59:31,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:59:31,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5957 states and 6381 transitions. [2020-10-28 12:59:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1562 [2020-10-28 12:59:31,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:31,122 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:31,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:59:31,122 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:31,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1561728920, now seen corresponding path program 1 times [2020-10-28 12:59:31,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:31,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090177594] [2020-10-28 12:59:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:31,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:36,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:36,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1595 [2020-10-28 12:59:36,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:59:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5277 [2020-10-28 12:59:36,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:36,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:59:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-28 12:59:36,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 317 [2020-10-28 12:59:36,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:37,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:59:37,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:37,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:59:37,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:37,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:59:37,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:59:37,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:37,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:59:37,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:59:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:59:37,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:59:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:37,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:59:37,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:59:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:37,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:59:37,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:59:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:59:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:37,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:59:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:59:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:59:37,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:59:37,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:59:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:37,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:59:37,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:37,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 12:59:37,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:37,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:37,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:37,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:59:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:37,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:59:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:59:38,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-28 12:59:38,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 12:59:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:38,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:59:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:59:38,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:59:38,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:59:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:38,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1427 [2020-10-28 12:59:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:38,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:38,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:38,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:59:38,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:38,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:59:38,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:38,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:59:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:38,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7403 backedges. 2726 proven. 293 refuted. 0 times theorem prover too weak. 4384 trivial. 0 not checked. [2020-10-28 12:59:40,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090177594] [2020-10-28 12:59:40,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:40,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:59:40,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098045026] [2020-10-28 12:59:40,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:59:40,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:40,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:59:40,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:59:40,714 INFO L87 Difference]: Start difference. First operand 5957 states and 6381 transitions. Second operand 8 states. [2020-10-28 12:59:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:44,067 INFO L93 Difference]: Finished difference Result 11904 states and 12755 transitions. [2020-10-28 12:59:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:59:44,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1561 [2020-10-28 12:59:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:44,084 INFO L225 Difference]: With dead ends: 11904 [2020-10-28 12:59:44,084 INFO L226 Difference]: Without dead ends: 6137 [2020-10-28 12:59:44,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:59:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6137 states. [2020-10-28 12:59:44,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 5953. [2020-10-28 12:59:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5953 states. [2020-10-28 12:59:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 6349 transitions. [2020-10-28 12:59:44,311 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 6349 transitions. Word has length 1561 [2020-10-28 12:59:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:44,312 INFO L481 AbstractCegarLoop]: Abstraction has 5953 states and 6349 transitions. [2020-10-28 12:59:44,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:59:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 6349 transitions. [2020-10-28 12:59:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1669 [2020-10-28 12:59:44,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:44,347 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:44,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:59:44,347 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:44,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash -683854996, now seen corresponding path program 1 times [2020-10-28 12:59:44,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:44,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522320983] [2020-10-28 12:59:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:44,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:49,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:49,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1704 [2020-10-28 12:59:49,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:59:49,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-28 12:59:49,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:49,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1561 [2020-10-28 12:59:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:59:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:59:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:59:50,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:59:50,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:59:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:59:50,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:59:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:59:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:59:50,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:59:50,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:59:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:59:50,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:59:50,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:59:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:59:50,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:59:50,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:59:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:59:50,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:59:50,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:59:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:59:50,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:59:50,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:59:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:59:50,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:59:50,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:59:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:59:50,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:59:50,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:59:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:59:50,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:59:50,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:59:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:59:50,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:59:50,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:59:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:59:50,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:59:50,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:59:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:59:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-28 12:59:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:50,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:50,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 12:59:50,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:59:50,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:50,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:59:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:59:50,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:59:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:50,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-28 12:59:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:51,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:51,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:59:51,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:59:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:59:51,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:51,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:59:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:59:51,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:59:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8662 backedges. 1630 proven. 2 refuted. 0 times theorem prover too weak. 7030 trivial. 0 not checked. [2020-10-28 12:59:52,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522320983] [2020-10-28 12:59:52,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:59:52,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:59:52,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251428317] [2020-10-28 12:59:52,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:59:52,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:59:52,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:59:52,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:59:52,630 INFO L87 Difference]: Start difference. First operand 5953 states and 6349 transitions. Second operand 7 states. [2020-10-28 12:59:53,850 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 12:59:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:59:55,071 INFO L93 Difference]: Finished difference Result 11896 states and 12700 transitions. [2020-10-28 12:59:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:59:55,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1668 [2020-10-28 12:59:55,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:59:55,087 INFO L225 Difference]: With dead ends: 11896 [2020-10-28 12:59:55,087 INFO L226 Difference]: Without dead ends: 6133 [2020-10-28 12:59:55,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:59:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2020-10-28 12:59:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 6131. [2020-10-28 12:59:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6131 states. [2020-10-28 12:59:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6131 states to 6131 states and 6489 transitions. [2020-10-28 12:59:55,199 INFO L78 Accepts]: Start accepts. Automaton has 6131 states and 6489 transitions. Word has length 1668 [2020-10-28 12:59:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:59:55,201 INFO L481 AbstractCegarLoop]: Abstraction has 6131 states and 6489 transitions. [2020-10-28 12:59:55,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:59:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6131 states and 6489 transitions. [2020-10-28 12:59:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1722 [2020-10-28 12:59:55,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:59:55,234 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:59:55,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:59:55,235 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:59:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:59:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1287088912, now seen corresponding path program 1 times [2020-10-28 12:59:55,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:59:55,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842479125] [2020-10-28 12:59:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:59:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:59:55,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:59:59,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:59:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1757 [2020-10-28 12:59:59,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:59:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4441 [2020-10-28 12:59:59,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:59:59,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:59:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:59:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1430 [2020-10-28 12:59:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-28 12:59:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:00,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:00:00,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:00:00,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:00:00,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 13:00:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:00:00,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:00:00,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 13:00:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 13:00:00,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:00:00,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 13:00:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 13:00:00,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:00:00,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 13:00:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 13:00:00,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:00:00,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 13:00:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:00:00,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:00:00,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 13:00:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 13:00:00,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:00:00,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 13:00:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:00:00,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:00:00,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 13:00:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 13:00:00,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:00:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 13:00:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 13:00:00,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:00:00,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:00,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 13:00:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:00,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:00,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:00:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:00:00,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:00,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:00:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:01,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-28 13:00:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:01,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:01,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:01,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 13:00:01,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 13:00:01,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:01,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:01,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 13:00:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:01,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1587 [2020-10-28 13:00:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:01,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:01,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:00:01,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:01,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:00:01,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:01,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:00:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:01,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8845 backedges. 2082 proven. 85 refuted. 0 times theorem prover too weak. 6678 trivial. 0 not checked. [2020-10-28 13:00:03,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842479125] [2020-10-28 13:00:03,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:03,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:00:03,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182726303] [2020-10-28 13:00:03,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:00:03,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:03,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:00:03,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:00:03,129 INFO L87 Difference]: Start difference. First operand 6131 states and 6489 transitions. Second operand 7 states. [2020-10-28 13:00:05,288 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:00:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:06,528 INFO L93 Difference]: Finished difference Result 13346 states and 14104 transitions. [2020-10-28 13:00:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:00:06,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1721 [2020-10-28 13:00:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:06,542 INFO L225 Difference]: With dead ends: 13346 [2020-10-28 13:00:06,543 INFO L226 Difference]: Without dead ends: 4993 [2020-10-28 13:00:06,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2020-10-28 13:00:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4987. [2020-10-28 13:00:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4987 states. [2020-10-28 13:00:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 5209 transitions. [2020-10-28 13:00:06,658 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 5209 transitions. Word has length 1721 [2020-10-28 13:00:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:06,659 INFO L481 AbstractCegarLoop]: Abstraction has 4987 states and 5209 transitions. [2020-10-28 13:00:06,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:00:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 5209 transitions. [2020-10-28 13:00:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2020-10-28 13:00:06,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:06,706 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:06,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 13:00:06,706 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:06,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:06,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1349651868, now seen corresponding path program 1 times [2020-10-28 13:00:06,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:06,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437400680] [2020-10-28 13:00:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:08,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:09,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1759 [2020-10-28 13:00:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:00:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 13:00:12,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:00:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1432 [2020-10-28 13:00:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-28 13:00:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:00:12,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:00:12,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:00:12,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 13:00:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:00:12,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:00:12,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 13:00:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 13:00:12,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:00:12,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 13:00:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 13:00:12,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:00:12,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 13:00:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 13:00:12,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:00:12,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 13:00:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:00:12,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:00:12,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 13:00:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 13:00:12,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:00:12,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 13:00:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:00:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:00:12,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 13:00:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 13:00:12,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:00:12,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 13:00:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:12,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:12,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 13:00:12,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:00:12,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:12,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:13,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 13:00:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:13,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:13,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:13,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 13:00:13,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:13,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:00:13,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:13,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:13,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:13,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:13,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 13:00:13,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-28 13:00:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:13,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:13,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:13,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 13:00:13,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-28 13:00:13,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:13,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-28 13:00:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1592 [2020-10-28 13:00:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:13,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:13,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:00:13,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:00:13,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:13,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:00:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:13,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:00:13,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8832 backedges. 1687 proven. 4 refuted. 0 times theorem prover too weak. 7141 trivial. 0 not checked. [2020-10-28 13:00:15,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437400680] [2020-10-28 13:00:15,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:15,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:00:15,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016843516] [2020-10-28 13:00:15,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:00:15,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:15,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:00:15,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:00:15,377 INFO L87 Difference]: Start difference. First operand 4987 states and 5209 transitions. Second operand 8 states. [2020-10-28 13:00:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:18,164 INFO L93 Difference]: Finished difference Result 9976 states and 10428 transitions. [2020-10-28 13:00:18,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:00:18,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1723 [2020-10-28 13:00:18,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:18,179 INFO L225 Difference]: With dead ends: 9976 [2020-10-28 13:00:18,179 INFO L226 Difference]: Without dead ends: 5177 [2020-10-28 13:00:18,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:00:18,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5177 states. [2020-10-28 13:00:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5177 to 4985. [2020-10-28 13:00:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4985 states. [2020-10-28 13:00:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4985 states to 4985 states and 5190 transitions. [2020-10-28 13:00:18,281 INFO L78 Accepts]: Start accepts. Automaton has 4985 states and 5190 transitions. Word has length 1723 [2020-10-28 13:00:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:18,283 INFO L481 AbstractCegarLoop]: Abstraction has 4985 states and 5190 transitions. [2020-10-28 13:00:18,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:00:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4985 states and 5190 transitions. [2020-10-28 13:00:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1797 [2020-10-28 13:00:18,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:18,322 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:18,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 13:00:18,322 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:18,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:18,323 INFO L82 PathProgramCache]: Analyzing trace with hash 578945888, now seen corresponding path program 1 times [2020-10-28 13:00:18,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:18,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139711874] [2020-10-28 13:00:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:00:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:23,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:23,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1834 [2020-10-28 13:00:23,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:00:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 13:00:23,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:23,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:23,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 13:00:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1688 [2020-10-28 13:00:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 13:00:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:00:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:00:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:00:24,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:00:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:00:24,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:00:24,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 13:00:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:00:24,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:00:24,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 13:00:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 13:00:24,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:00:24,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 13:00:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 13:00:24,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:00:24,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 13:00:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 13:00:24,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:00:24,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 13:00:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:00:24,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:00:24,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 13:00:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 13:00:24,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:00:24,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 13:00:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:00:24,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:00:24,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 13:00:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 13:00:24,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:00:24,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 13:00:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:24,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:24,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 13:00:24,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:00:24,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:24,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:24,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:24,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:24,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 13:00:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:24,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:25,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 13:00:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 13:00:25,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:25,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:00:25,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-28 13:00:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:25,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:25,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:25,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 13:00:25,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:25,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:00:25,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:25,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:00:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:00:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-28 13:00:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:25,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:25,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:25,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 13:00:25,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:25,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:00:25,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:25,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:00:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:00:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 13:00:25,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:25,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1662 [2020-10-28 13:00:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:00:25,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:00:25,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:00:25,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:00:25,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:00:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:00:25,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:00:25,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:00:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:00:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:00:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 13:00:25,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:00:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10175 backedges. 1738 proven. 60 refuted. 0 times theorem prover too weak. 8377 trivial. 0 not checked. [2020-10-28 13:00:27,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139711874] [2020-10-28 13:00:27,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:00:27,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:00:27,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326621430] [2020-10-28 13:00:27,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:00:27,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:00:27,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:00:27,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:00:27,712 INFO L87 Difference]: Start difference. First operand 4985 states and 5190 transitions. Second operand 8 states. [2020-10-28 13:00:30,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:00:30,929 INFO L93 Difference]: Finished difference Result 6282 states and 6594 transitions. [2020-10-28 13:00:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:00:30,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1796 [2020-10-28 13:00:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:00:30,942 INFO L225 Difference]: With dead ends: 6282 [2020-10-28 13:00:30,942 INFO L226 Difference]: Without dead ends: 6095 [2020-10-28 13:00:30,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:00:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2020-10-28 13:00:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 5721. [2020-10-28 13:00:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5721 states. [2020-10-28 13:00:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 6017 transitions. [2020-10-28 13:00:31,040 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 6017 transitions. Word has length 1796 [2020-10-28 13:00:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:00:31,042 INFO L481 AbstractCegarLoop]: Abstraction has 5721 states and 6017 transitions. [2020-10-28 13:00:31,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:00:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 6017 transitions. [2020-10-28 13:00:31,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1802 [2020-10-28 13:00:31,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:00:31,068 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:00:31,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 13:00:31,069 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:00:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:00:31,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1529139368, now seen corresponding path program 1 times [2020-10-28 13:00:31,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:00:31,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557964588] [2020-10-28 13:00:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY